Proceedings of the American Academy of Arts and Sciences, Volumen3Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 13
At first its walls are extremely thin , being of a most delicate membrane ; but as its
size increases , cells appear upon its inner surface , and at last a basement
membrane is perceived , covered with epithelial cells . All these formative
changes ...
At first its walls are extremely thin , being of a most delicate membrane ; but as its
size increases , cells appear upon its inner surface , and at last a basement
membrane is perceived , covered with epithelial cells . All these formative
changes ...
Página 14
... I have seen the provisional blood - corpuscles ( which are at first only simple
epithelial cells ) become oxygenated , acquiring a red color , from circulating in
these vessels . “ The allantois is then probably a temporary pulmonary organ ; the
...
... I have seen the provisional blood - corpuscles ( which are at first only simple
epithelial cells ) become oxygenated , acquiring a red color , from circulating in
these vessels . “ The allantois is then probably a temporary pulmonary organ ; the
...
Página 16
There is a circulation within the transparent area of the embryo long before any
circu . lation of blood takes place ; — a circulation of a transparent fluid
containing no blood corpuscles , but consisting of a series of cell nuclei in a
transparent ...
There is a circulation within the transparent area of the embryo long before any
circu . lation of blood takes place ; — a circulation of a transparent fluid
containing no blood corpuscles , but consisting of a series of cell nuclei in a
transparent ...
Página 18
It is composed of nucleated , welldefined cells lying in a semi - solid , punctiform
stroma . " The second is fibro - cartilage of a permanent nature , and consisting of
the same cells as the first , but which lie in a network of fibrous tissue , which last
...
It is composed of nucleated , welldefined cells lying in a semi - solid , punctiform
stroma . " The second is fibro - cartilage of a permanent nature , and consisting of
the same cells as the first , but which lie in a network of fibrous tissue , which last
...
Página 19
It is thus that the future bone may be said to consist of a fasciculus of tubes filled
with cartilage cells . This intercellular matrix constitutes the primitive ossific rete ,
in which the calcareous salts are first deposited . This first deposition having ...
It is thus that the future bone may be said to consist of a fasciculus of tubes filled
with cartilage cells . This intercellular matrix constitutes the primitive ossific rete ,
in which the calcareous salts are first deposited . This first deposition having ...
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Página 8 - ... fund for publication. Professor Agassiz offered by title two papers: — 1st. Monograph of the North American Crawfishes (Astacidea). 2d. Investigation of some Points of the Natural History of the Higher Animals, bearing upon the Origin, Unity, and Diversity of Man. Three hundred and sixty-fourth meeting. June 22, 1852. — MONTHLY MEETING. The CORRESPONDING SECRETARY and subsequently the PRESIDENT in the chair. Professor Agassiz, in behalf of the committee appointed to consider the best means...
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Página 183 - Notices of some New Mosses in the Collection of the United States Exploring Expedition under Captain Wilkes, by William S.
Página 136 - MEMOIRS OF THE GEOLOGICAL SURVEY OF GREAT BRITAIN, and of the Museum of Economic Geology in London. Published by order of the Lords Commissioners of Her Majesty's Treasury.
Página 252 - Cambridge ; with a systematic description of the British Palaeozoic Fossils in the Geological Museum of the University of Cambridge, by FREDERICK M"CoY, FGS, Hon.
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Información bibliográfica
| Título | Proceedings of the American Academy of Arts and Sciences, Volumen3 Volúmenes141-147 de American periodical series, 1850-1900 |
| Autor | American Academy of Arts and Sciences |
| Editor | Metcalf and Company, 1857 |
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