Annals of the Lyceum of Natural History of New-York, Volume 3Lyceum of Natural History of New York, 1836 |
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Página 24
... less than the atomic quantity . But the lime , peroxide of iron , protoxide of manganese and magnesia , ( if we admit that the 0.42 contained 0.12 of magnesia ) are equivalent to 0.39 alumina . It is clear from this , that these bodies ...
... less than the atomic quantity . But the lime , peroxide of iron , protoxide of manganese and magnesia , ( if we admit that the 0.42 contained 0.12 of magnesia ) are equivalent to 0.39 alumina . It is clear from this , that these bodies ...
Página 27
... less distinct , but seemingly rectangular to the edges of the prism . Hence the primary form may be a right oblique prism , with angles deviating 3 ° or 4 ° from right angles . Lustre shining and vitreous . Hardness nearly the same as ...
... less distinct , but seemingly rectangular to the edges of the prism . Hence the primary form may be a right oblique prism , with angles deviating 3 ° or 4 ° from right angles . Lustre shining and vitreous . Hardness nearly the same as ...
Página 67
... less compact and much softer . Color light grayish - blue . Powder light blue . It is harder than gypsum , but soft enough to be scratched by the nail . Sectile . The particles when scraped off with a knife , feel gritty be tween the ...
... less compact and much softer . Color light grayish - blue . Powder light blue . It is harder than gypsum , but soft enough to be scratched by the nail . Sectile . The particles when scraped off with a knife , feel gritty be tween the ...
Página 92
... less degree with wings which are a prolongation of the pectoral and abdominal sections , and joined to the chest by bony commissures : these wings are generally supported on each side by a smaller bony process , furnished with a plate ...
... less degree with wings which are a prolongation of the pectoral and abdominal sections , and joined to the chest by bony commissures : these wings are generally supported on each side by a smaller bony process , furnished with a plate ...
Página 93
young ones always , ) more or less jointed : marginal plates twenty - three , sternal eleven . Third . Such as have the sternum joined to the shell by a membrane , as in the T. clausa : in this the sternum is bivalve , but whether this ...
young ones always , ) more or less jointed : marginal plates twenty - three , sternal eleven . Third . Such as have the sternum joined to the shell by a membrane , as in the T. clausa : in this the sternum is bivalve , but whether this ...
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Palavras e frases frequentes
acid acuminate acute alumina America angles atoms Baldwin base bracts bristles brown Brucite carinate chondrodite colour compressed Corymbs Culm Cyperaceae CYPERUS Dewey distinct Drummond Eleocharis Elliott enum Esenb excl fascicles feet high filiform Florida flowers franklinite genus Georgia Glumes gram Gray head herbarium hispid imbricated inches high inches long Interior scales involucre lanceolate leaves lime linear lines long lines wide Linn Linnæa magnesia manganese mant marginal plates membranaceous Michaux Michx mineral minute mucronate Muhl Muhlenberg narrow nearly North Carolina nut obovate oblong obovate obtuse peduncles perigynium Peroxide of iron plant Protoxide pubescent Pursh rachis rays RHYNCHOSPORA scabrous scales ovate scarious Schkuhr Schoenus Schult Schw Scirpus sessile setaceous setis sheaths short shorter side Silica slender smooth species Specific gravity specimens spikelets Spreng Stamens sternum striæ Style 3-cleft summit syst terminal Torr Torrey triangular triquetrous tubercle umbel Vahl Willd yellow
Passagens conhecidas
Página 129 - ... limbs and tail are very large, the latter strongly crested. From the form of its body, it is called, in the Southern States, alligator tortoise. It bites severely, and will seize any thing presented to it, and sometimes will not let go its hold even after the head is severed from the body. It is sought after as an article of food, but, when old, the flesh is rank and disagreeable, and, at all times, it exhales a strong, musky odor. It attains large dimensions : individuals have been met with...
Página 236 - To this may be added, that C. intumescens, owing to the scarcely exserted peduncles, has the loose, few- (5-8-) flowered spikes closely approximate, so as to be almost indistinguishable ; and the perigynia are erect, much shorter, (6-7 lines long,) slightly serrulate towards the apex of the beak, and...
Página 44 - Thomson describes it as a mineral of " a light grayish yellow colour, consisting of a congeries of very small rounded grains, easily separable from each other, and not larger than small grains of sand. These grains are translucent, and some of them indeed transparent. The lustre of the transparent grains is splendent ; that of the translucent grains shining. The lustre is inclining to resinous. The grains are rounded, but when examined with the microscope, they seem to consist of imperfect crystals....
Página 322 - This species infests a great variety of plants, and is to be found throughout our country from the Great Lakes to the Gulf of Mexico and from the Atlantic to the Pacific.
Página 82 - Nutallite in my possession, are eight-sided prisms, which cleave in the direction of the faces of a right square prism. The colour is white ; in some parts of the crystal yellowish, in others bluish or greenish. The yellowish-white parts of the crystal are transparent ; the bluish nearly opaque ; showing evidently the presence of some foreign matter. Streak white. Lustre vitreous. Easily scratches by the knife. Specific gravity in different specimens was found to vary from 2.748 to 2.758.
Página 50 - ... we read (LC p. 50,) that the mineral received by him from " Mr. Nuttall, (from Bolton, Mass.) bears so much resemblance to the Picrosmine of Hadinger, both in character and composition, that he strongly suspects the two things to be mere varieties. The mineral is white, with a shade of green, powder white. It consists of a congeries of prismatic crystals, very irregularly disposed, and involved in each other. Lustre , glassy ; transparent on the edges. The analysis gave : Silica 56.64 Magnesia...
Página 67 - ... amorphous compact stone, through which a few scales of mica are scattered, having much the appearance of claystone ; but softer. Fracture earthy. Colour light-greyish blue. Powder very light smalt blue. It is rather harder than gypsum ; but soft enough to be scratched by the nail. Sectile. Opaque. The particles, when scraped off with a knife, feel gritty between the teeth. Specific gravity, 2.606. It does not melt per se before the blowpipe. Mr THOMAS...
Página 45 - ... inclining to resinous. The grains are rounded, but when examined with the microscope, they seem to consist of imperfect crystals. The texture before a powerful magnifier seems foliated ; but the grains are so small, that it is not easy to make out its true texture with accuracy. Specific gravity, 3.201. " Easily crushed to powder by the nail of the finger. It is therefore soft. It does not scratch calcareous spar.
Página 221 - A Notice of Some New, Rare, or Otherwise Interesting Plants, from the Northern and Western Portions of the State of New York.
Página 135 - a tooth and part of the jaw of a lizard monster or saurian animal resembling the famous fossil reptile of Maestricht.