. Quarterly journal of microscopical science. coexist withthat of the nurse ; it is very much reduced, x 50. 6.—One of the developed embryos when the nurse has disappeared ; tlievascular cord is atropied; the space between the two tunics is ablood-sinus, iu which the heart is seen; the branchiae present theircanals traversed by blood, and communicating with the sinus; apart of the branchiae is not represented, in order to expose the 50. 7.—Budded embryos, in the most developed of which is seen the vesselwhich passes from the ganglion towards the endostyle ; a part ofthe mother Ascidian
. Quarterly journal of microscopical science. coexist withthat of the nurse ; it is very much reduced, x 50. 6.—One of the developed embryos when the nurse has disappeared ; tlievascular cord is atropied; the space between the two tunics is ablood-sinus, iu which the heart is seen; the branchiae present theircanals traversed by blood, and communicating with the sinus; apart of the branchiae is not represented, in order to expose the 50. 7.—Budded embryos, in the most developed of which is seen the vesselwhich passes from the ganglion towards the endostyle ; a part ofthe mother Ascidian with the gemmiieious lube and the heart isrepresented. X 50. 8.—Fibro-eellular tissue of the external tunic of the vessels of the 700. 9.—Diagram to show more clearly the course of the vessels in the seriesof compound embryos; the arrows indicate the direction of theblood in a given moment. In the figure the vessel ar represents thearterj, and v the vein ; when the current is reversed, v becomes theartery and ar the
Size: 1388px × 1800px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1872
