Iron: An Illustrated Weekly Journal for Iron and Steel Manufacturers, Metallurgists, Mine Proprietors, Engineers, Shipbuilders, Scientists, Capitalists ..., Band 46Perry Fairfax Nursey Knight and Lacey, 1847 |
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acid advantages alkali apparatus applied April Atmospheric Railway axle Birmingham boiler Boulton and Watt Burner carriages centre city of London College of Preceptors colour communication connected construction cubic equations cylinder diameter effect employed engine equation feet fire Fleet-street force Galignani gun-cotton gutta percha heat improvements inches invention iron J. C. Robertson James JAMES COCKLE John June June 19 letter Letters Patent locomotive London machine machinery manner manufacture March March 23 mathematical means mechanical ment Messrs metal method Middlesex mode motion mould obtained paper parish of St patent pieces pipe piston plane plates present pressure principle printing produced purpose quantity rails railway registered remarks rendered rollers screw shaft ship side six months solution specification spring steam surface telegraph tion tube valve velocity vessel weight wheel wire wood Woolwich
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Seite 212 - Hulls : for a machine for carrying ships and vessels out of or into any harbour and river against wind and tide, or in a calm.
Seite 70 - But the truth is, that the temperature of 32"' of Fahrenheit, that at which water freezes, is only the commencement of an operation that is almost infinite; for after its congelation, water is as competent to continue to receive cold as it was when it was fluid. The application of cold to a block of ice does not...
Seite 523 - ... that the patentee, if an alien at the time the patent was granted, had failed and neglected for the space of eighteen months from the date of the patent, to put and continue on sale to the public, on reasonable terms, the invention or discovery for which the patent issued ; in either of which cases judgment shall be rendered for the defendant, with costs.
Seite 21 - Greenock, to sail by the power of Wind, Air, and Steam, he intends that the Vessel shall leave the Broomielaw on Tuesdays, Thursdays, and Saturdays, about midday, or at such hour thereafter as may answer from the state of the tide, and to leave Greenock on Mondays, Wednesdays, and Fridays in the morning to suit the tide. The elegance, comfort, safety, and speed of this Vessel require only to be proved to meet the approbation of the public ; and the Proprietor is determined to do everything in his...
Seite 48 - Centauri and the Cross ; while to the north it fades away pale and dim, and is in comparison hardly traceable. I think it is impossible to view this splendid zone, with the astonishingly rich and...
Seite 395 - Ainsi, notre vraie méthode n'est que cet heureux mélange de l'analyse et de la synthèse, où le calcul n'est employé que comme un instrument. Instrument précieux et nécessaire sans doute, parce qu'il assure et facilite notre marche; mais qui n'a, par lui-même, aucune vertu propre ; qui ne dirige point l'esprit , mais que l'esprit doit diriger comme tout autre instrument.
Seite 7 - tis plain, by his words, he knew not how to go about it. Now is not this very fine ? Mathematicians, that find out, settle, and do all the business, must content themselves with being nothing but dry calculators and drudges ; and another, that does nothing but pretend and grasp at all things, must carry away all the invention, as well of those that were to follow him, as of those that went before.
Seite 449 - As the winds in the southern regions do not exert any centrifugal force, while those in the northern regions do, it follows that this force cannot disturb the barometer in the vicinity of the equator; while in the vicinity of the pole the barometer must be powerfully affected by the centrifugal force of the wind; The temperate zone being subject both to real and apparent winds, must have very fluctuating barometers, and the same holds true to some distance within the arctic circle, explaining Dr....
Seite 47 - Madler has arrived at the conclusion that the Pleiades form the central group of our whole astral or sidereal system, including the Milky Way and all the brighter stars, but exclusive of the more distant nebulae, and of the stars of which those nebulae may be composed.
Seite 395 - Ce n'est donc point dans le calcul que réside cet art qui nous fait découvrir; mais dans cette considération attentive des choses, où l'esprit cherche avant tout à s'en faire une idée , en essayant , par l'analyse proprement dite, de les décomposer en d'autres plus simples, afin de les revoir ensuite comme si elles étaient formées par la réunion de ces choses simples dont il a une pleine connaissance.