Archive image from page 66 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0401todd Year: 1847 POLYPIFERA. 45 will, presently, he more particularly de- scribed. From this disposition it results that the contents of the stomach can pass as far as the extremities of these four vessels, and by means of the transverse canal can be trans- Fig. 50. A scries illustrating the development of Ttdndaria by free gemmce, after the detachment of the embryo from its peduncle, in continuation of that in the preceding cut. The same letters indicate similar parts in
Archive image from page 66 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0401todd Year: 1847 POLYPIFERA. 45 will, presently, he more particularly de- scribed. From this disposition it results that the contents of the stomach can pass as far as the extremities of these four vessels, and by means of the transverse canal can be trans- Fig. 50. A scries illustrating the development of Ttdndaria by free gemmce, after the detachment of the embryo from its peduncle, in continuation of that in the preceding cut. The same letters indicate similar parts in all the figures in this and the preceding series. Fig. 1. An embryo detached and moving in the •water like a Medusa, seen in profile; in addition to the four vessels, whose development is demonstrated in the foregoing series, eight other canals ( /') are now perceptible; these belong to the external enve- lope. 2. The same viewed obliquely, showing the situa- tion of the mouth e; h, the transverse canal which brings the four vessels into communication. 3. The same seen from below. 4. The four bands or vessels contracted a little, giving to the embryo a subquadrate outline ; viewed from below. The embryo is now no longer spheri- cal, but flattened, as well as subquadrate. 5. The embryo viewed obliquely from above; the superior and inferior parietes drawn together; the stomach projecting through the mouth. It now presents .the form of a Greek cross, owing to the great contraction of the longitudinal bauds or ves- sels. 6. The embryo placed inverted with respect to Fig. 1; the stomachal cul-de-sac, which becomes the body of the polype, completely protruded. 7. An ideal transitory figure. 8. The embryo become fixed. The internal row of tentacles beginning to protrude. 9. The same more advanced. The two rows of tentacles further developed. ferred from one to the other. Professor Van Beneden observed a fluid containing globules moving in this direction in their interior. The comm
Size: 863px × 2318px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1840, 1847, anatomy, archive, book, bookauthor, bookdecade, bookpublisher, booksponsor, booksubject, bookyear, drawing, historical, history, illustration, image, london_sherwood_gilbert_and_piper, mblwhoi_library, page, physiology, picture, print, reference, todd_robert_bentley_1809_1860, vintage, zimmermann_a_albrecht_b_1860, zoology
