Proceedings of the American Academy of Arts and Sciences, Volume 11Metcalf and Company, 1876 - Humanities Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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abactinal Acad Academy acid ammonia appears armature Benth Boston California calycis calyx calyx-teeth Cambridge cañons centimetres chloride of purpureocobalt chromosphere circuit Co₂ NH3 cobalt coil companion corolla crystalline crystals deflection dentibus distance experiments feet flowers foliis formula fruit galvanometer gave Genth genus Gino Capponi give glabrous Gray Guadalupe Island inch long instrument integerrimis involucre J. C. WATSON lake leaflets leaves length less linearibus lines long lobes lobis luteocobalt magnet method milk millimetre nearly nitrate Nutt oblong observations Observatory obtained obtuse ovate ovatis oxalate Palmer pedicels plant plates poles present probable error Procyon Professor proper motions pubescent quarts R₁ resistance ring salt screw SECTION seeds seen slender SO,Co soluble solution spark species stamens stars sulphate of roseocobalt surface telescope tion Torr TRUMAN HENRY SAFFORD tube tubo veiled spots vittæ Washington Territory water of crystallization Watson Winlock wire xanthocobalt
Popular passages
Page 347 - And if any book shall be lost or injured, the person to whom it stands charged shall replace it by a new volume or set, if it belongs to a set, or pay the current price of the volume or set to the Librarian ; and thereupon the remainder of the set, if the volume belonged to a set, shall be delivered to the person so paying for the same. 6. All books shall be returned to the Library for examination at least one week before...
Page 305 - Observatory and the main lines of the country; and this was done at the expense of the survey. From- its foundation, the Observatory, in one way or another, had furnished exact time to the community gratuitously ; for which, elsewhere, observatories receive a liberal compensation. In 1872, Mr. Winlock introduced improvements which have made this service more widely and constantly useful, and at the same time remunerative. A contract was made for a special wire between Cambridge and Boston, which...
Page 86 - ... which once extended in this direction considerably to the southward of what is now the limit of that flora upon the mainland. And, finally, the presence of so many South American types suggests the conjecture that this, and the similar element which characterizes the flora of California, may be due to some other connection between these distant regions than any which now exists, and even that all the peculiarities of the western floras of both continents had a common origin in an ancient flora...
Page 282 - Etenim omnes artes, quae ad humanitatem pertinent, habent quoddam commune vinculum ; et, quasi cognatione quadam, inter se continentur.
Page 290 - But the spectrum is only a single manifestation of that infinite ether which makes known to us the presence of the universe, and in which whatever exists — if I may be permitted to say so — lives and moves and has its being. What object, then, can be offered to us more worthy of contemplation than the attributes of this intermedium between ourselves and the outer world ? Its existence, the modes of motion through it, its transverse vibrations, their creation of the ideas of light and colors in...
Page 288 - Fahrenheit, the rays emitted by a solid are invisible. At that temperature they are red, and the heat of the incandescing body being made continuously to increase, other rays are added, increasing in refrangibility as the temperature rises.
Page 267 - As resistance is directly proportional to the length, and inversely proportional to the area of the cross-section, the required resistance is R = 18.7 X ||||-X |= 10.5 ohms (approx.) Ans.
Page 288 - ... continuously to increase, other rays are added, increasing in refrangibility as the temperature rises. 5. While the addition of rays, so much the more refrangible as the temperature is higher, is taking place, there is an increase in the intensity of those already existing. Thirteen years afterward Kirchhoff published his celebrated memoir on the relations between the coefficients of emission and absorption of bodies for light and heat, in which he established mathematically the same facts, and...
Page 289 - I pray you, in receiving these two medals on his behalf, in accordance with the terms of the original trust, to assure him, on the part of the Academy, of the high satisfaction taken by all its Fellows in doing honor to those who, like him, take a prominent rank in the advance of science throughout the world.
Page 93 - Liebm. ; fide Dr. Engelmann. Frequent at the north end, and occasionally found in the canons on both sides of the island. Often large, sometimes forty feet high, and wide-spreading ; timber good and durable, though knotty. 90. PINUS INSIGNIS, Dougl., var. ; fide Dr. Engelmann ; with leaves in twos. At the north end, at high elevations. Very vigorous and handsome trees, usually spreading widely, the largest seven and a half feet in circumference and averaging seventy feet high. The wood is very knotty...