. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 328 BULLETIN OF THE Fig. Very young stolon : b, outer tunic ; c, wall of pericardium ; r, heart; 1, sinus cavity ; 2, central tube of stolon ; 3, cavity of central tube ; 4, constrictions iu outer wall of stolon ; y, y, ovaries. At about this period a long club-shaped mass of protoplasm (Figs. 27 and 28, y) appears within each of the sinus chambers of the tube; and soon after the constrictions (4) make their appear- ance upon the outer wall. We now have all the parts which are to take part in the development of t
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 328 BULLETIN OF THE Fig. Very young stolon : b, outer tunic ; c, wall of pericardium ; r, heart; 1, sinus cavity ; 2, central tube of stolon ; 3, cavity of central tube ; 4, constrictions iu outer wall of stolon ; y, y, ovaries. At about this period a long club-shaped mass of protoplasm (Figs. 27 and 28, y) appears within each of the sinus chambers of the tube; and soon after the constrictions (4) make their appear- ance upon the outer wall. We now have all the parts which are to take part in the development of the chain, and it will be best to state here the future history of each, and to give an outline of the development, before entering into the details. The wall of the outer tube, which, as we have seen, is part of the outer tunic of the solitary form, is destined to form the outer tunics Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
Size: 2162px × 1155px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1871
