. Elementary text-book of zoology. AMPHIOXUS. 305 Fig. 219.âThe Development of Amphioxus as seen in Sections. Neural Groove. Neural Tube. Neural Tube. Collar-sac. Mesoblastic Somites. Trunk- sacs. Neural Tube, Neurenteric Canal. , _ (A Through D 1-2 in Fig_. .218; B through E 3-4, and C through E 5-6 in Fig. 218; D through F 7-8 in Fig. 218; E through H 9-10 in Fig. 219 ; and F through â posterior part of Fig. 221.) A neural groove and developing mesoblastic sacs; B and C show -the neural tube; D shows the completed mesoblastic sacs; E shows the notochord completely forme
. Elementary text-book of zoology. AMPHIOXUS. 305 Fig. 219.âThe Development of Amphioxus as seen in Sections. Neural Groove. Neural Tube. Neural Tube. Collar-sac. Mesoblastic Somites. Trunk- sacs. Neural Tube, Neurenteric Canal. , _ (A Through D 1-2 in Fig_. .218; B through E 3-4, and C through E 5-6 in Fig. 218; D through F 7-8 in Fig. 218; E through H 9-10 in Fig. 219 ; and F through â posterior part of Fig. 221.) A neural groove and developing mesoblastic sacs; B and C show -the neural tube; D shows the completed mesoblastic sacs; E shows the notochord completely formed; and F shows the formation of myotome from dorsal part of mesoblast and-perivisceral ccelom from ventral. (After Hatschek.) G, Longitudinal horizontal section of an Amphioxits larva. (After M*Bride.) H, Honzontal longitudinal section through advanced chordula larva of A mphi- oxus. (After Hatschek.) M. 21. 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 Masterman, Arthur Thomas. Edinburgh, E. & S. Livingstone
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1900, bookyear1902
