Proceedings of the American Academy of Arts and Sciences, 10권American Academy of Arts and Sciences., 1875 |
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4 페이지
... gives a perfectly pure salt . In large crystals the salt has a dark wine - red color , like the salts of xanthocobalt . It usually separates from hot concentrated solutions in small , very brilliant yellow scales , which , under the ...
... gives a perfectly pure salt . In large crystals the salt has a dark wine - red color , like the salts of xanthocobalt . It usually separates from hot concentrated solutions in small , very brilliant yellow scales , which , under the ...
6 페이지
... give in detail . The chloride has the characteristic sherry - wine color of the salts of this series , and the small crystals are very brilliant and exhibit a remarka- ble iridescence . The chloride is more soluble than the sulphate ...
... give in detail . The chloride has the characteristic sherry - wine color of the salts of this series , and the small crystals are very brilliant and exhibit a remarka- ble iridescence . The chloride is more soluble than the sulphate ...
8 페이지
... gives with potassic ferrocyanide no precipitate at first , but after some hours beautiful garnet - red acicular crystals are formed . It is most easily distinguished from the nitrate of xanthocobalt by its crystalline form and by the ...
... gives with potassic ferrocyanide no precipitate at first , but after some hours beautiful garnet - red acicular crystals are formed . It is most easily distinguished from the nitrate of xanthocobalt by its crystalline form and by the ...
10 페이지
... give excellent results . In this manner , 0.4791 gr . gave 0.3697 gr . silver : 25.36 per cent chlorine . 0.3942 gr . gave 0.2483 gr . Au + CoSO , and 0 · 1391 gr . gold , and by difference 0.1092 gr . CoSO = 10 · 54 per cent cobalt and ...
... give excellent results . In this manner , 0.4791 gr . gave 0.3697 gr . silver : 25.36 per cent chlorine . 0.3942 gr . gave 0.2483 gr . Au + CoSO , and 0 · 1391 gr . gold , and by difference 0.1092 gr . CoSO = 10 · 54 per cent cobalt and ...
11 페이지
... gives with reagents the reactions of the salts of the octamin series . The relation between the two complex atoms ... gives for the formula of this salt Co , Cl NH ( old style ) . I should write this Co2 ( NH3 ) Cl 69 and give it the ...
... gives with reagents the reactions of the salts of the octamin series . The relation between the two complex atoms ... gives for the formula of this salt Co , Cl NH ( old style ) . I should write this Co2 ( NH3 ) Cl 69 and give it the ...
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acid ammonia armature Bates becomes the type Benth Billb Boisd Boisduval Boston Brit Butl Butler California calyce calyx Cambridge capsula cent cobalt chloride Cist Co₂ NH3 coast coil congeneric corolla crystals Diurn Doubl Doubleday ECTOCARPUS electro-magnet employs Enum Exot Fabr Feld Felder fere flowers Folia foliis fore type formula galvanometer gave genus glabrous Gray Harv Herr.-Schaeff Herrich-Schaeffer Hübn Hübner's inches long involucri Journ Key West Kirb Kirby lines long Linn List lobis Lond malvæ Monthl name falls name is preoccupied Neues Lep nitrate Novara nuculis nunc Nutt oblong pedicellis plicis POLYSIPHONIA potassic Prodr proper motions purpureocobalt racemes Reise Novara Rhop sæpius salt Schmett Scudd sense Sole spe Sole species solution Spec specified as type specimens Steph sulphate Syst taken Torr vermiculites Verz Wallengr Westw Westwood xanthocobalt Zoöl
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490 페이지 - In yonder old playground, fit spot whereon to commemorate the manliness which there was nurtured, shall soon rise a noble monument which for generations will give convincing answer to such shallow doubts ; for over its gates will be written, " In memory of the sons of Harvard who died for their country.
347 페이지 - J— 1 inch in diameter ; nut shallowly sulcate, the walls rather thin and with two broad cavities upon each side. (J. rupestris, var. major, Torrey in Sitgreave's Report, p. 171, t. 16.) — A large shrub or tree, in the vicinity of San Francisco growing 40-60 feet high and 2-4 feet in diameter, and ranging southward to Santa Barbara, Southern Arizona and Sonora.
489 페이지 - To this end they should be taught something about a good many things, but every thing about at least one thing. But before all systems of instruction. he placed character ; as character alone would enable the young to profit by the many accidental circumstances which schools and colleges do not create and cannot prevent. Dr. Walker had been a member of the Board of Overseers of Harvard College from 1825 to...
497 페이지 - ... on seeing aid lavished by liberal hands on a sister museum when his own was retarded for the total want of means, is well exemplified by a remark he made soon after the death of the lamented Agassiz. After speaking in relation to the position which Agassiz had taken on the all-absorbing questions of natural selection and evolution, he uttered the following sentence in his usual simple, but earnest manner: '• Well, say what we will as to his views, right or wrong, there is no mistake about it,...
394 페이지 - ... the complete number of vids of the corresponding linear algebra is 2" — 1 . The limited character of the algebras which I have investigated may be regarded as an accident of the mode of discussion. There is, however, a large number of unlimited algebras suggested by the investigations, and Hankel's numbers themselves would have been a natural generalization from the proposition of § 65 of my algebra.* Another class of unlimited algebras, which would readily occur from the inspection of those...
332 페이지 - Of very slender habit, wholly glabrous; leaves much smaller, about half an inch long, short-petioled ; flowers light blue, in rather short simple racemes. — In the Sierra Nevada from the Yosemite Valley northward. Possibly distinct, but intermediate forms occur. It is 51 Bridges, 1628 Brewer, 3880 and 4870 Bolander, 68 and 68 a Torrey, and was also collected by Bigelow and by Dr.
395 페이지 - ... linear algebra, and that all the forms of the algebras given by me must be imperfect quadrates, and has confirmed this conclusion by actual investigation and reduction. His investigations do not however dispense with the analysis, by which the independent forms have been deduced in my treatise, but they seem to throw much light upon their probable use.
393 페이지 - But on the contrary, it is a singular fact, and one quite consonant with the principles of sound logic, that its first and general use is mostly to be expected from its want of significance. The interpretation is a trammel to the use. Symbols are essential to comprehensive argument. The familiar proposition that all A is B, and all...
297 페이지 - ... strata. Indeed, in the deep parts of the gravel deposits, we meet with masses of rock in which solution of the silicates in water is hourly going on ; and we may follow these solutions to the wells, and observe that sometimes depositions are formed on the surfaces of the rocks, over which they pass. Vanadium exists in the water, which supplies the wells of the district of the drift, as a transparent, colorless solution of magnesian calcic, manganous, and ferrous silicates, phosphates, carbonates,...
347 페이지 - Leaves subtomentose beneath, very acutely and deeply 5-7-lobed, the lower lobes projected backwards and forming a deep sinus ; petioles j-5 inches long ; racemes not exceeding the leaves; fertile heads three, 8-10 lines in diameter; nutlets glabrous, villous at base, truncate above and tubercled with the short base only of the style ; receptacle densely hairy and fruit-bearing over nearly the entire surface. — Collected by Wright (n. 1880) in southeastern Arizona near the San Pedro, and described...