SEPTEMBER 13, 1889.]

ariable with the time; the coefficient of variation ith the temperature is about half as great, and the mperature can be known exactly, which is impossible ith a pasty electrolyte ; lastly, the element is much ore conductive, and is only polarised very little by e passage of the current. Several liquid Latimerlark elements constructed at the same time do not, as rule, vary more than Tooth of their mean value at e same temperature, unless, by accident, the mercury ould have touched the zinc; traces of zinc in the ercury tend to diminish considerably the electrootive force; in fact, this latter may even be annihited or reversed.

The Gouy element* (1.39 v. on an average) is as reakable for its constancy as the Latimer-Clark; morever, it only differs from the liquid Latimer-Clark by e substitution of oxide of mercury for the mercurial lphate. There is in this substitution both an advange and a drawback; the advantage is that the variaon of the electromotive force with the temperature is duced by almost half (about 00014); the drawback that the depolarisation being less efficacious, the olarisation of the Gouy element is much greater, and kes longer to diappear than that of the liquid Latimerlark.

Different Gouy elements, prepared from the same aterials, do not vary in general more than Tooth of eir mean value.

To sum up, the Latimer-Clark element or the Gouy lement may be of great service, even in researches here great precision is required; but then it is essenal that a thermometer, the reservoir of which is lunged into the liquid of the element, should give the emperature of it. We should also measure, from time o time, the absolute value of the electromotive force f the standard, and frequently compare its value to imilar standards, placed in the same conditions as to emperature, in order to make sure that no accident has made its electromotive force vary to any important xtent.

One of the principal uses of a standard of electro1otive force, the absolute value of which is known, is he rapid and exact measurement of the intensity of a eeble or strong current by the opposition of this tandard to the difference of potential developed by the urrent at the two ends of a resistance suitably chosen, nd the absolute value of which is known, thus reersing the operation that served to determine the absoite value of the element. These two operations ogether constitute the most simple and exact manner f comparing the value of a current obtained by an bsolute electro-dynamometer or by a standard ampère > the value of another current of very different inensity.

(To be continued.)

307

Mr. Frank M'Gowan has lately returned from South America, after an absence of a year and a half, whither he was sent by Mr. Edison to procure specimens of bamboo for incandescent lighting. His travels carried him through the unbroken forests of South America, where he encountered not only wild beasts, snakes, reptiles, crocodiles, and predatory bands of Indians, but exposed himself to the wasting ravages of low fevers. He forded rivers, waded swamps, penetrated unknown mountain fastnesses, and scaled the lofty Cordilleras. He ascended the Amazon 2,300 miles, and traversed the Continent from ocean to ocean.

Mr. Edison is well pleased with the result of the exploration, and has lost no time in directing experiments with the large and varied stock of fibrous materials brought home by McGowan. Some of the specimens of bamboo have given good results, as the wood naturally splits into very thin strips, and has great strength; and the substance is homogeneous throughout, and when carbonised retains great strength. This discovery, Mr. Edison thinks, is of vast importance.

The substitution by law of electricity for the gallows in New York threatens to liberate a large batch of condemned murderers. Owing to the technical mess into which the gush of sentimental reformers of the mode of capital punishment has got the law, 14 condemned murderers now imprisoned in the Tombs in New York City have a prospect of escaping the death penalty. The law says they must be sentenced to be put to death by electricity, yet there is great probability that in the appeal from the first sentence under this new law the Court of Appeal may decide that the electrical mode of execution is unconstitutional, being "cruel and unusual;" the sentence, therefore, could not be executed. If the penalty be changed, the lawyers will contend that the culprit cannot be re-sentenced under a return to the old mode of hanging, and must perforce go free, since the law expressly states that murders committed since January 1st, 1889, must be punished under the electric execution code. If the Higher Court says this way cannot be used, then there is no way in which the death penalty can be carried out, and the culprits must be set at liberty, unless the Governor commute their sentences to imprisonment for life.

By invitation of the directors of several of the street railroads of Baltimore, I went over to Philadelphia last week to witness the operation of the cable cars in that city.

The manner of operating the cars is very simple. One car, (sometimes two cars, are coupled together) is managed by two men, one the grip man, the other the conductor. The grip man is on the front platform, holding in each hand a lever, that in his right connecting with the cable, that in his left operating the break. The car, when going at the speed of six miles an hour, can be stopped in a shorter time than when drawn by horses.

The distance I travelled over was about two miles, with many curves around the corners of the streets, and up several steep grades.

Anent Edison's later than the last discovery, “Life” publishes the following::

Cumso I see that Edison has invented a machine by means of which a person's face can be seen miles away.

Mrs. Cumso: Oh, how nice! You'll get one, George, and then when we go to the theatre you can see a man on the street without leaving your seat.

That the benighted inhabitants of your little island may be able to appreciate "Life" saying, it should be mentioned that in this great unbounded continent to go out to see a man," means to go and imbibe.

Baltimore, August 27th.

NEW PATENTS-1889.

Improvements in dynamo machines and the application thereof for regulating electric arc lamps, and other purposes." F. REISINGER and W. WENZEL. Dated August 26. 13541. Improvements in electric wire and pole connectors." C. R. BONNE. (Communicated by Messrs. Mix and Genest, Limited, Berlin.) Dated August 27. (Complete.)

13553. "6

Improvements in electrical signalling apparatus for preventing collisions between trains on railways." E. EDWARDS. (Communicated by T. Perls, Germany.) Dated August 27.

13557. Improvements in or connected with holders or sockets for incandescent electric lamps." J. Y. JOHNSON. (Communicated by J. W. Collier, United States.) Dated August 27. (Complete.)

13580. "An electric body belt." G. H. REDfern. August 28.

Dated

13636. Improvements in the manufacture of indigo by the application of electricity." F. HUGHES. (Communicated by E. J. McDonald, East Indies.) Dated August 29. (Complete.) 13640. Improvements in electric switches." W. THOMPSON Dated August 29.

13658. Improvements in automatic transmitters for telegraphic purposes." H. LUBLINER. Dated August 29.

13675. "Improvements in the arrangements and apparatus for electrically lighting railway trains." W. E. LANGDON. Dated August 30.

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13778. Improvements in electric bells, and in apparatus for use in connection therewith." C. H. MARTIN. Dated August 31.

308

ABSTRACTS

13643. 66

Improvements in circuit making and interrupting devices for electric bells and other purposes." W. SNELGROVE. Dated September 21. 8d. A bell is mounted in any usual manner, and it is struck by a hammer at the end of a lever; the acting stroke is given by an electro-magnet attracting an armature upon the lever, and the hammer is taken away from the bell by its weight or by a spring. The making and interrupting of the electric circuit is controlled by a second lever, which is actuated by the hammer lever, but is moved only when near the termination of the hammer stroke in either direction; the second lever carries or actuates a cam, which moves a spring and causes con. tact to be made or interrupted. 5 claims.

14149. "Improvements in and connected with dynamo-electric machines and electric motors." B. WILLCOX. (Communicated from abroad by C. S. Bradley, of America.) Dated October 2. 8d. The armature is by preference of the "ring" type and is wound throughout, the coils being preferably looped into a closed circuit in the usual manner, so that connections may be made to the plates of an ordinary commutator. In addition, connections are carried from four points of the armature circuit distant apart 90 degrees to four insulated collecting rings on the shaft, each two diametrically opposite, constituting a pair. Brushes are in contact with the commutator, and from them connection is made with the field magnet, which may have two poles, or a multiplicity of poles alternating regularly in polarity. Separate brushes are in contact with the collecting rings, and each pair can be connected to a separate external circuit. Such a machine is self-exciting, and will generate and deliver into the said two separate external circuits two independent alternating currents, one of which will be one quarter of a phase or wave length behind the other. 9 claims.

16681. "Improvements in multiplex telegraphy." F. J. PATTEN. Dated November 16. 1s. 1d. Relates to multiplex telegraphs, and embodies a new mode of synchronising the electric motors which drive the distributing apparatus at different stations, 80 as to preserve perfect unison between rotating trailers or other devices adapted to distribute current to local stations successively connected into signalling relation to each other. Also embodies means of utilising the synchronous movement effected by the motors to render the multiplex telegraph reliable, and to enable a large number of messages to be sent by a large number of different operators using their transmitting instruments at the same time. 2 claims.

16681A. "Improvements in synchronising a series of electric motors." F. J. PATTEN. Dated November 16. 8d. Relates to a mode of and apparatus for synchronising electric motors, and especially those which are used for driving the distributing apparatus at different stations for the purposes of and in conection with the system of multiplex telegraphy. 4 claims.

1889.

9589. Improvements in electric apparatus for indicating the direction and speed of revolution of engine shafts." J. C. RICKETSON. Dated June 11. 8d. Has for its object the construction of devices for indicating at any point distant from the shaft of an engine the direction in which the said shaft is revolving, as well as to indicate the speed of such revolutions, and is, in part, an improvement on the devices set forth in patent No. 16,742, granted December 6th, 1887, and, as in said patent, is especially designed for use in connection with the shaft of a marine engine, though capable of use with any reversible shafting, whether on land or water. 3 claims.

9638. Improvements in telephonic and phonographic transmitters." E. S. DRAKE. Dated June 11. 6d. Claims:-1. A transmitter, embodying the combination of a diaphragm, with a supporting case or front, provided with separate but connecting inlet and outlet air conduits or passages, so respectively arranged relatively to the diaphragm that the vocalised impulses directed to the diaphragm through the inlet passage will be reflected directly therefrom through the outlet passage, as and for the purposes specified. 2. The combination of diaphragm with door or front provided with air passages, leading obliquely to and from the diaphragm at equal angles thereto, coinciding with the angles of incidence and reflection of the sound waves conducted thereto and therefrom through said passages, as specified.

10295. "Improvements in electric telegraphic apparatus." W. P. THOMPSON. (A communication from abroad by C. G. Burke, of America.) Dated June 25. 8d. Relates to receiving

[SEPTEMBER 13, 1889.

instruments adapted to the transmitting instruments at prese in use, and also embraces new methods and means for trans mission, and is applicable to the several forms of recording signal whether by the movements of a ray of light as produced by a mirror galvanometer, the tracings on a paper strip as by tre siphon recorder, or by the manifestations of sound where a sounder is operated in a local circuit through the interposition 2 a suitable relay in the main circuit. 8 claims.

CORRESPONDENCE.

A Retraction Required.

In looking over a file of the ELECTRICAL REVIEW to-day, I came across a communication in the issue d June 21st, 1889, entitled "The Mammoth Combination," signed "Suum Cuique," in the body of which I fr this remarkable statement: "It is also a rather interest ing bit of history that even in America, where they ahead so fast, Sprague did nothing in electric traction until after his brother had ridden upon a car Holroy Smith was exhibiting in Paris, and had forwarded hi a description of the Blackpool line."

There is but one way to characterise this statement It is a falsehood, without the shadow of substance uphold it, and for the following very simple reasons:

1. At the time of the Paris Exhibition I was at sea on duty on a Government ship, and until a long time afterwards did not even know of the existence of M: Holroyd Smith or his Blackpool line, or that he ha any car at the Exhibition.

2. I have, and had, but one brother, he much young than myself. He has never been in Europe, and does not even now know that there is such an individual a Holroyd Smith, or such a railway experiment as th Blackpool line.

3. No detail of my work, so far as I know, has any resemblance to any prior description of any part of Mr Smith's work.

I am at a loss to conceive what fertile imagination produced a tale with such an utter lack of substance, and am somewhat amazed at the hardihood which dictate its publication. Criticisms of my method of working, of my want of knowledge, of my lack of attainments scientific, commercial, or otherwise are allowable, and I suppose inseparable from a business which has to dea with hard practical facts. I have no wish to deny to anyone who has the time and inclination, the pleasure he may derive from this sort of amusement, because am very conscious of my own defects, and can ever add material for an effective attack. But there is a limit to this sort of thing, and "Suum Cuique" b gone far beyond it. With the general tenor of the article I do not wish to concern myself, but shall look for the motive which actuated it in the identity of the writer, and with the quoted extract I purpose to concern my self very particularly It is not an uncommon practice with historians of a certain class, when wishing to parade their own accou plishments and to covertly attack the work of others. to seek the semi-protection of an alias.

But this alias will not protect. I think I am justified in expressing my belief that "Saum Cuique" is Lo other than Mr. Holroyd Smith himself; or, at least, that he is responsible for the quoted statement, because! was recently informed that when in the United States he made a similar statement to a well-known electrical

ELECTRIC MINERS' LAMPS.

FOR many years past the question as to the possibility of preventing explosions in coal and other mines has been duly considered, both by mining engineers and Government inspectors; but hitherto the results obtained with the adoption and use of various kinds of safety lamps have not been very successful, and still the problem remains to be solved. Most of the explosions in mines are due to the exposure to the atmosphere of the flame of miners' lamps, or to the fact that where safety lamps are in use, they are not entirely closed to the air. Of course there is a small percentage of explosions which must be attributed to the opening by miners of their lighted lamps, or to the striking of matches for the purpose of lighting pipes; but these form only an insignificant number, and may almost be left entirely out of consideration. The Mines Act of 1887, which came into operation at the commencement of 1888, has greatly conduced to the prevention of explosions. The number of deaths which took place last year from fire-damp explosions was 50, this being the lowest record ever known. These could, of course, have been greatly reduced had electric miners' lamps been used.

The reports of Her Majesty's Inspectors of Mines for 1888 have been issued, and as compared with the previous year a very satisfactory state of affairs is shown. In reference to the lighting of the mines and the best kind of miners' lamps, the general consensus of opinion of the inspectors is that electricity should be the illuminant. Now there is not the slightest reason why an electric miners' lamp should not be introduced at a price which, although it might be slightly higher than that of the bonnetted Clanny, the Marsaut, Davy, or the Mueseler, would still be sufficiently cheap to induce colliery and other mine owners to give it a trial with a view to its ultimate adoption. In this connection it may be interesting if we reproduce one of the inspector's recommendations. Mr. Ralph Moore, of the East Scotland district, states: "I

have always looked forward for a better and a safer light, to the invention of an incandescent lamp which could be supplied as cheaply and used as handily as the ordinary naked light. With a lamp of this kind there would be no inducement to use any other light, and the difficulty of getting miners to use safety lamps would cease. With the use of an incandescent lamp, so far as miners' lights are concerned, explosions would cease." Similar expressions of opinion are given by the other inspectors.

Various kinds of miners' electric lamps have for some time been placed on the market, but they have not come into favour, and we believe that we are correct in stating that in the United Kingdom there are but two or three mines where such lamps are employed. Among the reasons which may be advanced as the cause of these lamps not having been taken up may be mentioned the higher price, the increase in weight, and the reserve shown by mine owners, who seem to follow the same policy as that pursued by the railway companies, that is to say, they hesitate for a long period before they adopt anything new. A few months ago an electrician in the north of England brought out a miner's lamp, which is, we believe, lighter in weight than any other such lamp in the market when the candle power and lighting hours are considered. It weighed about 2 lbs., and gave a 1 C.P. light for ten hours, but no mine owner has as yet been found to take it up. We have before us at this moment another electric miners' lamp-we are, of course, not speaking of that of Coad, which has not yet come to hand-which weighs 3 lbs. and gives a 1 C.P. light for twelve hours. The current is 323 ampères at 3.75 volts pressure. The lamp, which is contained in a compact wooden case containing the electrolyte and plates, is 5 inches in height, and the diameter 3 inches. This lamp, too, has not come into favour, and other cases might also be cited.

The foregoing remarks show to a great extent the present disadvantages of the miners' lamps hitherto invented, and the question arises, cannot a lamp be brought out which will remedy such defects? We say

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decidedly, yes! The lamps which we have inspected have in many instances been very clumsily made without due regard to the actual condition of affairs ruling in mines, and their weight could, in certain cases, have been reduced by half. Whether it will be better to manufacture a primary battery lamp or a secondary battery to be charged by a dynamo, we will not venture to predict, although in the latter case the dynamo could be used for lighting the mines; but we are strongly of opinion that if electrical engineers who are interested in mining would give due attention to the subject and persevere, they would ere long be able to produce an electric miners' lamp as cheap, nearly as light, and more efficient than those lamps now employed in mining operations, the weight of which, we believe, varies from 1 lb. to 1 lbs.

66

THE Ironmonger is again on the war path. It is only a few weeks since we drew attention to the absurdity of that journal's theory regarding ironmongers being dealers in electrical apparatus. Now we have another specimen of the immense electrical knowledge possessed by the editor of that highly instructive paper. In its last issue the Ironmonger states that an electric motor has been invented by D. G. Weens (sic), Baltimore, which obtained the rate of two miles per minute on a curved track A five mile circular track will be constructed immediately to demonstrate the practicability of the system for passenger service." Our contemporary evidently imagines that the motor runs along the track like a railway train, possibly with passengers bestriding the motor like a man on horseback. Such statements, made by the non-scientific press, do a great deal of harm to the electrical industries, causing as they do an entire misrepresentation of facts. Scissors and paste, together with an ink slinger, will do very well for ordinary subjects, but when it comes to electrical engineering, we would give to the Ironmonger Panch's advice to those about to marry, "Don't!"

THOSE municipalities who are considering the advisability of applying for electric lighting powers are taking a long time before they come to any definite decision. That of Bristol is no exception to the rule, and although Mr. Preece's report was handed in some months ago, a conclusion has only just been arrived at.

The Electrical Committee of the Bristol Council has just decided to request the Chief Electrician of the Postal Telegraphs to draw up specifications from which the Corporation will be able to advertise for tenders. This matter will be laid before the Council for consideration at their next meeting. Electrical engineers would do well to bear this in mind, especially as several electric lighting companies have already sent in applications, offering either to do the work for the Corporation, or to carry it out themselves.

THE public electric lighting of Leamington will terminate in December. Such is the decision arrived at by the Watch and Lighting Committee of the Leamington Town Council, who have resolved to let the contract with Messrs. Chamberlain and Hookham, which expires in three months, run its course and then die a natural death as regards street lighting in that town. The Lighting Committee have recommended the substitution of Bray's patent gas lamps in

[SEPTEMBER 20, 1889.

three of the main thoroughfares for the glow lamps at present employed. The failure of glow lamp lighting in Leamington points a moral, namely, that in future those concerned in electric street lighting should take care to have proper standards for the lamps and erected at suitable intervals, and that the lamps should not be of low candle-power.

THE Electrician to the Post Office evidently intends to immortalise himself, and the B.A. Meeting of this year has been chiefly remarkable for the views taken by Mr. Preece on the dangers to be apprehended from electric currents of high tension. He was prepared to sit on a barrel of gunpowder through which a copper light ning conductor passed and when a storm was raging: and now he states that no current of electricity can kill a man with certainty. No doubt he is quite ready to make himself the subject of an experiment to confirm his views. This or the lightning rod experiment, if properly carried out, would prove a brilliant success, and would raise hopes of speedy promotion in the ranks of his talented staff. Almost immediately following his remarks comes the news in the New York Sun of September 1st, of the death of Mr. Darwin H. Henry, an expert electrician and Superintendent of Construction for the East River Electric Light Company, who was instantly killed on the previous afternoon in the dynamo room of the company's factory by a 1,000 volt alternating current machine. We will undertake to say that Mr. Preece stands alone on the ground he has chosen to take up, and there is not the slightest doubt but that his professional reputation will be seriously impaired by such an exhibition of eccentricity.

AN accident occurred at the local theatre at Hastings the other night which shows the danger of using gas in close proximity to the scenes and the flies. It appears that a "property " basket belonging to the "Dorothy" Company fell against a gaslight and became ignited Fortunately, however, the fire was discovered in time and prevented from spreading. The use of incandescent lamps entirely obviates such danger, and it must be satisfactory to the play-going public that the principal London theatres are in this respect safe.

IT is agreeable to find such a good understanding between employer and employés as was shown recently in Colchester, when Mr. James Paxman, the head of the firm of Davey, Paxman & Co., entertained at dinner two of his foremen who had just completed 21 years service with the firm, and also presented them with a pecuniary acknowledgment of their efforts. The firm has risen from a somewhat small affair to its present importance, and Mr. Paxman asserts that the success has been due to the thorough reliance which it has had in the workmen.

No definite arrangements will be entered into re the Canada-Atlantic cable enterprise until the Dominion Parliament meets during January next; but meanwhile much of the requisite capital has been secured. The north shore land line system will be in operation by the 10th October, and next year connection will be made by duplicate cable routes with Greeniy Island, Straits of Belle Isle.

MR. EDISON left 10,000 francs to the poor of Paris as a memento of his visit, and as a testimony of his gratitude for the kindness shown to him and his wife.

SEPTEMBER 20, 1889.]

MESSRS. W. T. GOOLDEN & CO.'S WORKS.

A RECENT visit to these works has convinced us that the firm came to a very wise determination when they decided to concentrate on this spot their offices which they formerly had at Victoria Street, Westminster, and their works which had been carried on for some years at Halifax. The new establishment is in Woodfield Road, Harrow Road, very near to Westbourne Park Station, a locality conveniently reached from any district of London and from the termini of the great railways. The offices have such a handsome frontage to the street that they might very well be taken for the Paddington Vestry Hall or some equally important public building. On the ground floor are spacious rooms for the managers, book-keepers and clerks, while in the upper storey there are capacious drawing offices and other rooms, all exceptionally well lighted and ventilated. In fact, there are few electrical engineering firms so well off in the matter of offices. The manufactory may be divided into two distinct departments, one being devoted to instrument making and the other to the construction of dynamos and other electrical machinery. The construction of electrical measuring instruments is an important feature of the business, the machinery, tools and testing appliances being all of the most modern and complete kind. The well-known Cardew voltmeters, which are equally useful for direct and for alternating currents are made in several forms, and have recently been much improved. For the measurement of alternating currents these instruments can be made to give at once a direct reading, which remains correct whatever may be the variations in speed of the alternations, the construction of the instrument being such that disturbances either way have the effect of correcting each other. Both in respect of this accuracy and sensibility, and also in the matter of cost, there is an advantage in the use of these instruments in preference to a Siemens dynamometer or Sir Wm. Thomson's instruments. The firm are also sole makers of Evershed's patent gravity ammeters and voltmeters for direct currents constructed for being left constantly in circuit without heating. These instruments possess an advantage over most others in that they take very little current, something like 6 watts as compared with 30 taken by the Cardew and as much as 100 by some others. A new form of Evershed ohmmeter has been recently brought out specially suited for testing insulation resistance of installation work in buildings. This is a practical, handy apparatus, as by its means work of this kind, which would formerly have occupied 10 or 12 hours, can now be completed in two.

Passing to the portion of the premises in which the heavier work is carried on, it is evident that the firm has been determined to be prepared to reap their share of the fruits of that general development of the electrical industry which is already foreshadowed. The works are equipped with machine tools and appliances of the most modern and improved kinds, and ample steam power is available for doing a very large business. Among the small engines which are set apart for special duties is one possessing some historical interest, being the first Armington-Sims that was imported into this country. The lower floor of the main building is devoted to the erecting of machinery, and here are put together not only dynamos but also coal cutting machines, magnetic separators for the treatment of china clay and other special productions of the firm. The improvements effected by Messrs. Goolden & Trotter in the construction of the Gramme machine have been so generally appreciated that they have become incorporated in all good modern dydynamos. On the occasion of our visit we saw ready for delivery a very good form of motor for a launch which, as will be seen from our illustration, is so designed that the whole thing will fit into the bottom of a boat without any further adjustment, the base of the machine being shaped accordingly. This, we understood, had just been completed to the order of a gentleman living on the upper part of the Thames to propel

311

The upper floor of this part of the premises provides ample room for armature winding and for the lighter tools employed in brass finishing, arc lamp work, and other operations of a like kind, such as the putting together of the fire-proof resistance frames of registered designs, to which we referred in our issue of June 28th.

The business hitherto transacted by the firm has been of a high class, and much of the early work in fitting ships of the Royal Navy was intrusted by the Admiralty to Messrs. Goolden & Co. We are convinced that the rearrangement of their business will enable them to do their work in the future, not, perhaps, with any greater satisfaction to their clients, but with more ease to themselves and under better conditions generally.

ENGLISH v. FRENCH DYNAMOS.

IN the ELECTRICAL REVIEW of August 30th, we announced that the Paris Municipal Council had' decided upon the purchase of Ferranti (English) machines, and transformers of the same system, the other competitors being MM. Naze and Dandeu. The latter gentlemen, feeling aggrieved, have just issued the following protest, which we print below:

66

Monsieur le Président :-We have just read on the door of a mairie the compte-rendu of the sitting of the Municipal Council of August 10th, and we have seen posted up on the walls the declaration of the Director of Works, couched as follows :-Here is, gentlemen, the situation :-The Commission has issued a tender for a machine of the Ferranti system. Several competitors presented themselves, and here is the note I have received on the subject :-" The sub-commission delegated by the Technical Commission of the Halles Works to examine the high-tension alternating machine presented by MM. Dandeu and Naze, as a competitor with the Ferranti machines, proceeded yesterday to its experiments. MM. Potier and Carpentier went to the Weyher and Richemond Works at Pantin, in order to work this new dynamo, which has been judged very imperfect. Constructed for 220,000 watts, it heated as soon as it had produced 60,000 watts, at the end of two hours' working. Under these conditions, hesitation is no longer possible, and I propose to the Council to pronounce on the papers before it." Further on follows the demand made by M. Lyon-Allemand for the purchase of Ferranti transformers. This was all voted and accepted, despite the first remarks of MM. Dumay and Patenne.