Lectures on histology v.2, 1854, Volumen2H. Bailliere, 1854 |
Dentro del libro
Resultados 1-5 de 43
Página 43
... valves or segments , united by a central suture , between which the newly - formed por- tions are interposed . They are reproduced in two ways , either by the escape of the granular contents of the mature frond , or by the formation of ...
... valves or segments , united by a central suture , between which the newly - formed por- tions are interposed . They are reproduced in two ways , either by the escape of the granular contents of the mature frond , or by the formation of ...
Página 44
... . Ralfs , in most of the species , the valves of the shells become detached after they are emptied of their contents . The sporangia , in some genera , continue smooth and unaltered ; in others they 44 HISTOLOGY OF ANIMALS .
... . Ralfs , in most of the species , the valves of the shells become detached after they are emptied of their contents . The sporangia , in some genera , continue smooth and unaltered ; in others they 44 HISTOLOGY OF ANIMALS .
Página 52
... valves , FIG 23 . E B D A , Achnanthes longipes . B , Gomphonema geminatum . c , a single valve of Triceratium favus . D , E , F , G , fossil Triceratia from Bermuda . there being two such , which are separated from each other by an ...
... valves , FIG 23 . E B D A , Achnanthes longipes . B , Gomphonema geminatum . c , a single valve of Triceratium favus . D , E , F , G , fossil Triceratia from Bermuda . there being two such , which are separated from each other by an ...
Página 52
... valves , investing a closed membranous sac or cell , within which are contained a mucilaginous fluid , and minute coloured granules , constituting the endochrome ; as the frustule increases in age , the two valves are separated by the ...
... valves , investing a closed membranous sac or cell , within which are contained a mucilaginous fluid , and minute coloured granules , constituting the endochrome ; as the frustule increases in age , the two valves are separated by the ...
Página 52
... valves , are more plainly seen , proving that these markings are confined to the siliceous skeleton . Another species provided with a horny branching stem , the Gomphonema geminatum , is represented at B , in Fig . 23 ; some of the ...
... valves , are more plainly seen , proving that these markings are confined to the siliceous skeleton . Another species provided with a horny branching stem , the Gomphonema geminatum , is represented at B , in Fig . 23 ; some of the ...
Términos y frases comunes
250 diameters abundance acid animal animalcules appearance atlas attached axis beautiful Belemnite body Bowerbankia calcareous calcareous matter carbonate of lime cavity cell-walls cellular structure centre cilia cirrhi coloriées coloured plates composed cones consists containing coral crust Crustacea decalcified described Diatomaceæ disc Echinodermata Echinus elongated examined exhibit external fibres Flustra folio Foraminifera FOREIGN SCIENTIFIC BOOKS fossil frustules gemmules genus granular hexagonal Histoire naturelle horizontal section horny material inch joints laminæ LECTURE livraisons magnified margin membrane microscope minute Mollusca mouth nacre nacreous Oolite operculum organic basis outer surface Oyster Paris Pearls perforations periostracum planches polypes polypidom portion prismatic cellular prisms radiated represented in Fig resemble reticulated structure seen shell shown in Fig silica skeleton soft species specimens spicula spiculum spines sponge stem striæ substance tentacula thick thin tissue trace Traité transparent transverse section tubercles tubes tubular tubuli valves vertical section vols whilst York Zoophytes
Pasajes populares
Página 9 - Laws of the state of New York, in relation to the Erie and Champlain canals, together with the annual reports of the Canal commissioners, and other documents requisite for a complete official history of those works. Also, correct maps delineating the routes of the Erie and Champlain canals, and designating the lands through which they pass.
Página 51 - are literally covered in the first warm days of spring with a ferruginous-coloured mucous matter, about a quarter of an inch thick, which, on examination by the microscope, proves to be filled with millions and millions of these exquisitely -beautiful siliceous bodies. Every submerged stone, twig, and spear of grass is enveloped by F .-, them; and the waving plume-like appearance of a filamentous body covered in this way is often very elegant.
Página 188 - Now scarcely a dozen kinds of these beautiful animals live in ihe seas of our globe, and individuals of these kinds are comparatively rarely to be met with : formerly they were among the most numerous of the ocean's inhabitants, — so numerous that the remains of their skeletons constitute great tracts of the dry land as it now appears. For miles and miles we may walk over the stony fragments of the...
Página 78 - The nummulitic formation," says Lyell, "with its characteristic fossils, plays a far more conspicuous part than any other tertiary group in the solid frame-work of the earth's crust, whether in Europe, Asia, or Africa. It often attains a thickness of many thousand feet, and extends from the Alps to the Carpathians, and is in full force in the north of Africa, as, for example, in Algeria and Morocco.
Página 188 - ... creatures among the loveliest of the inhabitants of the ocean. Even in their present disjointed and petrified state, they excite the admiration, not only of the naturalist, but of the common gazer, and the name of Stone-lily popularly applied to them, indicates a popular appreciation of their beauty.
Página 413 - Wythe's Dose and Symptom Book. Containing the Doses and Uses of all the principal Articles of the Materia Medica, etc.
Página 11 - THE FISCAL HISTORY OF TEXAS: EMBRACING AN ACCOUNT OF ITS REVENUES, DEBTS, AND CURRENCY, FROM THE COMMENCEMENT OF THE REVOLUTION IN 1834, TO 1851-2, WITH REMARKS ON AMERICAN DEBTS. BY WM. M. G-OUG-E, Author of "A Short History of Paper Money and Banking in the United States,
Página 79 - Carpathians, and in full force in the north of Africa, as, for example, in Algeria and Morocco. It has also been traced from Egypt into Asia Minor, and across Persia by Bagdad to the mouths of the Indus. It occurs not only in Cutch, but in the mountain ranges which separate Scinde from Persia, and which form the passes leading to Caboul; and it has been followed still farther eastward into India.
Página 10 - The industrial resources, etc., of the Southern and Western states: embracing a view of their commerce, agriculture, manufactures, internal improvements; slave and free labor, slavery institutions, products, etc., of the South...