Designation of the Substances. TABLE OF THE ANALYSES AND COMPARATIVE VALUES OF MANURES. * Annales de Chimie. } 80.0 0.759 18.0 66.2 0.757 1.81 0.36 92 99.6 24.0 1.098 24.0 1.168 0.651 20.0 55.4 0.768 1.54 25.0 0.755 2.5 55.4 0.735 0.38 25.0 1.021 2.75 64.4 0.762 0.31 0.23 2.0 3.0 50.9 0.760 0.059 78 90 384.5 Of green fats by saw-dust of the poplar. Of fish oil by the saw-dust of the Boiled and dried, Tuscany. Dried in the air. On leaving the press. Left to settle for 4 hours and decanted. Drained in heaps. Dried in the air. 1-475 Washing, the rain of a year. 0.29 19 72.5 Dried in the air. + The ratio in weight of the 0.67 of length in the inferior part to the 0.33 in the upper part is as 93 to 23. Name of the household fats collected in large towns by the melters of bone fat. We are constrained to postpone the Synoptical Table Containing 0.10 of fat. Sold by the manufacturers. Prepared 11 months. Recently manufactured. As sent out. of the equivalents of different manures, concluding this article, until next month. FANSHAWE'S PATENT ELASTIC WE are indebted to Messrs. ANCONA and BAGSTER, the well known architects and surveyors, whose names alone are sufficient guarantee of the respectability of the undertaking which we are about to notice, for the means of giving our readers a brief account of the advantages attending the adoption of this excellent material for the construction of pavements. It is composed of caoutchouc, combined, by mechanical means, with other suitable materials, by a method for which Her Ma. jesty's Letters Patent have been granted to Mr. H. R. Fanshawe, a gentleman whose inventive genius has frequently brought his name honorably before the public. To carry out this patent, a company has been formed. This composition constitutes a firm, substantial, and elastic pavement; we understand that the most severe tests of pressure, and wear and tear, have been ap. plied to it, without the slightest injury, and we have no hesitation in publicly testifying to its great and indisputable superiority. Comptes Rendus, No. 20, May 22, 1843. ON A NEW PROCESS OF MAKING BY M. GANNAL. IN conclusion, says the author, in terminating his Memoir, my process of manufacture consists: 1st. In granulating the lead : 2nd. In dividing it indefinitely, by rubbing it on itself in a leaden cylinder : 3rd. In facilitating the oxidation of the divided lead by the introduction of atmospheric air into the apparatus. 4th. In immediately converting this oxide of lead into the carbonate, by employing air more charged with carbonic acid: 5th. In hastening the oxidation of the lead, by introducing into the apparatus some nitric acid, or nitrate of lead: 6th. In washing the product obtained by this process: 7th. In hastening its desiccation, by submitting the result to strong pressure: 8th. In dividing into square cakes the pressed paste : 9th. In drying the divided product in a stove with a current of heated air. We gather from the company's prospectus, the following statement of the applicability of this pavement : It has been laid down in the stables of the Royal Horse Guards Barracks, Knightsbridge, the Royal Artillery Barracks, Woolwich, and we understand that the stables of the Barracks at Winchester are about to be paved with it. FEEDING OF HORSES. DOCUMENTS Caoutchouc forms the best material that has hitherto been applied to the paving of stables, court-yards, basements and footpaths; for preventing the escape of the highly deleterious effluvia from the vaults of churches or other buildings exposed to the action of noxious gases; for preventing the noise which, in large rooms devoted to religious or civil assemblies, is found so serious an inconvenience; for prisons, hospitals, asylums, &c., where the prevention of damp is so essentially necessary for the preservation of health; for sea and wharf walls; for a protective covering to piles, especially where they are likely to be destroy-sitting. And first, I may mention that, at ed by the worm; and for rendering roofs, arches, vaults, &c. impervious to moisture. Rats and other vermin cannot penetrate it; therefore it is well adapted for the floors and walls of granaries and malthouses. For stables it also offers very considerable advantages. Its resistance of humidity, its elasticity and softness, and its non-liability to fracture (like the materials now employed), are valuable qualities, of which every one possessing a horse would do well to avail himself. If the pavement of the stable be properly inclined, so that the urine may run into a surface-drain, and if a pail or two of water be thrown over it daily, in order to remove any urine that may remain on it, and if the water be quickly removed with a brush or broom into the main surface drain, there will no longer be any necessity for sub-drains; and there will be no injury to the horses' eyes, from the ammoniacal vapor resulting from the spontaneous decomposition of the urine. It is very well applied to the flooring of lunatic asylums, as the patients very frequently dash their heads against the ground, and this elastic substance will not hurt them. It has occurred to us that it would form an excellent flooring for laboratories and shops; and that the thin material might advantageously be applied to all the purposes for which floor-cloth is now used. Indeed, we think that the thick pavement would be an excellent substitute for the boards used for the floors of dwellings, &c. Among other benefits arising from this substitution, would be the impossibility of rats and other vermin making their way through it. We should say, that, from its noiselessness, it would be extremely well applied to the paving of churches, concert rooms, theatres, and the New Houses of Parlia ment. THE Academy will permit me to submit to it some clear and positive explanations and proofs in support of the answer which I verbally returned to the objections made by my learned colleague and friend, at the last the period when, at the kind request of M. Magendie, I was nominated a Member of the Commission of the Amirault, the absence of M. Boussingault had especially induced this adjunction; no responsibility can therefore devolve on him relative to the experiments undertaken by the Commission. But I hasten to say that the facts proved by our confrère (Boussingault), in Alsatia, and without any communication on the subject having taken place, are perfectly in accordance with the results which I have communicated to the commission, and deposited in the hands of M. Magendie, our president. This confirmation, obtained by works completely isolated and independent, is of a nature to inspire confidence: it may therefore be believed, that at Bechelbronn, as at Paris, the fatty substance is more abundant in the aliments with which horses are fed, than in their excrements. It seems to us also true, that it is evident that at Giessen, as in France, and as in every country, the fruits of the graminaceæ, and of the cereals in particular, are organised in such a manner as always to present an oleaginous secretion near the surface of their pericarp and in the whole mass of their cotyledon. That thus, neither the experiments of the commission, nor those of M. Boussingault, any more than the laws of vegetable physiology, could afford the slightest support to the ingenious hypothesis of the clever chemist of Giessen. documents proper for establishing and justiM. Magendie had in his hands all the fying the conclusions of our experiments. I was obliged to remit them to him, but it was and I am naturally warranted in depositing permitted to me to keep an extract of them, * Comptes Rendus, No. 11; Sitting of the Academy of Sciences, March 13, 1843. |