Proceedings of the American Association for the Advancement of Science, Temas1-21849 |
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Página 72
... cells . We have also a layer of cells outside . Now every one of these cells is a vibrating cell , the whole of its margin being provided with cilia . If one of these cells is detached and examined separately , it is found to be ...
... cells . We have also a layer of cells outside . Now every one of these cells is a vibrating cell , the whole of its margin being provided with cilia . If one of these cells is detached and examined separately , it is found to be ...
Página 73
... cells ; but there are upon the external surface , besides the vibrating cilia , peculiar organs which have been known to exist in other ani- mals , but which have never before been observed in corals , called nettling organs . It is ...
... cells ; but there are upon the external surface , besides the vibrating cilia , peculiar organs which have been known to exist in other ani- mals , but which have never before been observed in corals , called nettling organs . It is ...
Página 74
... cells can scarcely be fully recognized by the best microscopes now at our dis- posal . Some peculiarities which I ... cells , and there is in each cell a thread coiled up in a spiral form . In some of them there is a sort of arrow , with ...
... cells can scarcely be fully recognized by the best microscopes now at our dis- posal . Some peculiarities which I ... cells , and there is in each cell a thread coiled up in a spiral form . In some of them there is a sort of arrow , with ...
Página 75
... cell to which it is attached . I have seen how this tube , which is first coiled up in the cell , is inverted like the finger of a glove turned inside out . In observing the cells , three times in suc- cession , I saw the thread thrust ...
... cell to which it is attached . I have seen how this tube , which is first coiled up in the cell , is inverted like the finger of a glove turned inside out . In observing the cells , three times in suc- cession , I saw the thread thrust ...
Página 76
... cells themselves are only a modification of cells proper . They arise as cells ; among those completely formed are always some not yet fully developed , which are simple bags , incapa- ble of unfolding , and which resemble the cells ...
... cells themselves are only a modification of cells proper . They arise as cells ; among those completely formed are always some not yet fully developed , which are simple bags , incapa- ble of unfolding , and which resemble the cells ...
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Proceedings of the American Association for the Advancement of Science, Tema 11 Vista completa - 1858 |
Proceedings of the American Association for the Advancement of Science, Tema 10 Vista completa - 1857 |
Términos y frases comunes
acid AGASSIZ Alps American ammonia animals appear ascertained Association B. A. GOULD beds BENJAMIN PEIRCE body bones Boston Cambridge carbonate cavity cells cent character coals Coast Survey connected copper crinoids crystals Dayton deposits direction distance drift Echinoderms epidote existence fact FAMILY feet fossils genus geological glaciers Goldf gravel Gray grms HENRY Houghton inches investigations islands Kyanite Lake Superior Lieut limestone Linn longitude LOUIS AGASSIZ magnesia Mass matter meeting meridian Michx miles mineral Mississippi motion mountain native copper nearly nebular hypothesis Nutt observations ocean organs paper passing peculiar PEIRCE phenomena Philadelphia planet Polypi portion Prehnite present Prime Meridian Prof quantity region remarked river rocks ROGERS rutile sandstone scientific Secretary Section side SILLIMAN Silurian species specimens Standing Committee strata structure supposed surface temperature theory tion Tourn valley veins velocity Washington Willd York
Pasajes populares
Página 58 - But Moses' hands were heavy ; and they took a stone, and put it under him, and he sat thereon ; and Aaron and Hur stayed up his hands, the one on the one side, and the other on the other side ; and his hands were steady until the going down of the sun.
Página 85 - Institution. 2. Appropriations in different years to different objects ; so that in course of time each branch of knowledge may receive a share. 3. The results obtained from these appropriations to be published, with the memoirs before mentioned, in the volumes of the Smithsonian Contributions to Knowledge.
Página 86 - ... are to be prepared by collaborators eminent in the different branches of knowledge. 3. Each collaborator to be furnished with the journals and publications, domestic and foreign, necessary to the compilation of his report; to be paid a certain sum for his labors, and to be named on the title-page of the report. 4. The reports to be published in separate parts, so that persons interested in a particular branch can procure the parts relating to it without purchasing the whole. 5. These reports...
Página 85 - The volumes of the memoirs to be exchanged for the Transactions of literary and scientific societies, and copies to be given to all the colleges and principal libraries in this country. One part of the remaining copies may be offered for sale; and the other carefully preserved, to form complete sets of the work, to supply the demand from new institutions.
Página 82 - FOR THE INCREASE AND DIFFUSION OF KNOWLEDGE AMONG MEN.
Página 86 - The emphasis upon publications as a means of diffusing knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the Institution, Joseph Henry articulated a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge not strictly professional.
Página 83 - Regents the power of adopting such other parts of an organization as they may deem best suited to promote the objects of the bequest. "After much deliberation, the Regents resolved to divide the annual income...
Página 19 - ... from the clutches of the publicans, and the embraces of their pot companions, who followed them to the water's edge with many a hug, a kiss on each cheek, and a maudlin benediction in Canadian French. It was about the 12th of August that they left Mackinaw, and pursued the usual route by Green Bay, Fox and Wisconsin Rivers, to Prairie du Chien, and thence down the Mississippi to St. Louis, where they landed on the third of September.
Página xvii - Association are, by periodical and migratory meetings, to promote intercourse between those who are cultivating science In different parts of America, to give a stronger and more general impulse and more systematic direction to scientific research, and to procure for the labors of scientific men increased facilities and a wider usefulness.
Página 85 - Each memoir presented to the institution to be submitted for examination to a commission of persons of reputation for learning in the branch to which the memoir pertains ; and to be accepted for publication only in case the report of this commission is favorable.