Proceedings of the American Academy of Arts and Sciences, Volumen30Metcalf and Company, 1895 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 13
... acid gas and moisture . The weighed salt from a weighing bottle was mixed ... hydrochloric , and hydrobromic acids . The last two solvents must be ... acid , leaving a residue of nearly anhydrous calcic chloride . * These Proceedings ...
... acid gas and moisture . The weighed salt from a weighing bottle was mixed ... hydrochloric , and hydrobromic acids . The last two solvents must be ... acid , leaving a residue of nearly anhydrous calcic chloride . * These Proceedings ...
Página 15
... hydrochloric acid and adding a solution of hydrogen sulphide , gave no precipitate , indicating an absence of antimony . In the case of the salt SbCl ,. CaCl2 . 8 H2O , the per cent of residue was 24.64 , while the theoretical per cent ...
... hydrochloric acid and adding a solution of hydrogen sulphide , gave no precipitate , indicating an absence of antimony . In the case of the salt SbCl ,. CaCl2 . 8 H2O , the per cent of residue was 24.64 , while the theoretical per cent ...
Página 127
... hydrochloric acid , not a trace of the nitroalkyle is regenerated , but a more or less smooth decomposition into nitrous oxide and an aldehyde or ketone takes place , according to one of the following equations : I. 2 R - CH NONa + 2 ...
... hydrochloric acid , not a trace of the nitroalkyle is regenerated , but a more or less smooth decomposition into nitrous oxide and an aldehyde or ketone takes place , according to one of the following equations : I. 2 R - CH NONa + 2 ...
Página 129
... acid , and then again distilled over . The second dis- tillate thus obtained is perfectly neutral to test paper ... hydrochloric acid , instead of sulphuric acid , is used in the reaction . A preliminary experiment with pure acetaldehyde ...
... acid , and then again distilled over . The second dis- tillate thus obtained is perfectly neutral to test paper ... hydrochloric acid , instead of sulphuric acid , is used in the reaction . A preliminary experiment with pure acetaldehyde ...
Página 131
... acid were obtained from it . An entirely analogous result is obtained on adding very slowly dilute sulphuric or hydrochloric acid to an aqueous solution of sodic nitroethane ( made by means of sodium ethylate ) . It is also possible to ...
... acid were obtained from it . An entirely analogous result is obtained on adding very slowly dilute sulphuric or hydrochloric acid to an aqueous solution of sodic nitroethane ( made by means of sodium ethylate ) . It is also possible to ...
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Términos y frases comunes
Academy alcohol ammonia antennæ antimony appendage aqueous atoms basal benzol blastodermic vesicle body boiling Boston Cambridge carbonic carina cells CEUTHOPHILUS Chem Chemical Chemistry chloranil chloroform color compound crystalline crystals dichlordiethoxyquinone dichlordiphenoxyquinone dilute dissolved distal dried ectoderm embryos ether ethoxy filtered fore femora formed formula fulminate fuscous genicular spine germinal disk glacial acetic acid gram gram gave gram of argentic H₂O half as long heat hemiacetal hind femora Hind tibiæ hydrobromic acid hydrochloric acid hydrogen inner carina insoluble laboratory length less liquid longer luteous malonic ester method methyl Middle femora molecule nearly nitromethane obtained outer carina ovipositor oxide perithecium phenylate Plate posterior precipitate Professor Cooke pronotum quinone saponification Section silver slender sodic sodic ethylate sodic hydrate sodium sodium salt soluble solution species specimen spurs stout strontic bromide substance gave sulphuric acid tapering temperature tibia tibial depth tion tube twice as long
Pasajes populares
Página 434 - Like the corresponding methyl compound the dichlordiethoxyquinone diethylhemiacetal has acid properties forming with sodic hydrate a sodium salt. It shows toward sodic hydrate a stability in marked contrast to its susceptibility to the action of dilute acids, as it is necessary to boil it with a strong solution of sodic hydrate in order to saponify it to chloranilic acid. The sodium salt of the diethylhemiacetal is white and crystalline, readily soluble in water, slightly soluble in alcohol, and...
Página 219 - ... the equilibrium is obtained. All the facts are shown to be in accordance with this hypothesis, and a ready explanation is afforded by it of a number of phenomena which are to be found in the older works on electricity, but which have until this time remained unexplained.
Página 320 - 84. A Contribution to the Embryography of Osseous Fishes, with Special Reference to the Development of the Cod (Gadus morrhua).
Página 219 - The discharge, whatever may be its nature, is not correctly represented (employing for simplicity the theory of Franklin) by the single transfer of an imponderable fluid from one side of the jar to the other...
Página 611 - OF THE PRESIDENT. 1. It shall be the duty of the President, and, in his absence, of the senior...
Página 571 - A Course of Instruction in the Elements of the Art and Science of War, for the Use of the Cadets of the United States Military Academy, West Point, NY 12mo, cloth $1 .75 Field Fortifications.
Página 507 - ... following letters : from the Scientific Alliance of New York, requesting the cooperation of the Academy in the endeavor to obtain a reduction of postage rates on natural history specimens ; from the Royal Society of New South Wales, offering its medal and twenty-five pounds for the best communication containing the results of original researches on a series of specified topics ; from the Imperial Russian Geographical Society, enclosing a copy of a pamphlet " Respecting the Necessity of an International...