File:Journal of morphology (1909) (14770485141).jpg

Identifier: journalofmorphol20wist (find matches)
Title: Journal of morphology
Year: 1909 (1900s)
Authors: Wistar Institute of Anatomy and Biology
Subjects: Morphology Physiology
Publisher: Boston : Ginn & Co.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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Text Appearing Before Image:
. Fig. 30. Longitudinal section taken slightly to the left of the line CDof Fig. VII. The thiiming-out is farther advanced than in the precedingsection, and at the point marked x is clearly shown the cells that haveloosened and sunk down during fixation. Otherwise the subgermiual cavitywould contain only a few non-nucleated yolk masses, x H^- Fig. 31. An enlarged portion of the posterior end of the preceding pho-tograph. X 301. Fig. 32. Posterior end of a section taken through plane x-x of Fig. VIII.See text for description, x 3G6. Fig. 33. Posterior end of a longitudinal section, seven sections to theleft of the median line, from a blastoderm taken thirty-four hours afterfertilization, or seven hours before laying. The anterior limit of the ento-derm is shown at e. x 1^3. Fig. 34. The median section of the same blastoderm as the preceding.The length of the invaginated entoderm is necessarily greater than in Fig.33. X 193. Gasikli.atio.v in the Tigeons Egg J. THOS. IATTEUSON Plate IV.
Text Appearing After Image:
The JofiiNAL OF MoiiPHfji.oGv—Vor,. XX, No. 1, Plate V. Fig. 35. A median longitudinal section taken in the plane CR of Fig. XI.See text for description, x 1^7. Fig. 36. Enlarged anterior end of the preceding, x 245. Fig. 37. Enlarged posterior end of Fig. 35. X 245. Fig. 38. From a section, four sections to the left of the one representedin Fig. 35. The cavity in the thick dorsal lip is, perhaps, the remains ofthe space that was formed between the upper and lower layers when theformer turned under to give rise to the latter, x 245. Fig. 39. From a section, two sections to the right of the one representedin Fig. 35. It shows the same conditions as the preceding, x 245. Fig. 40. Posterior end of a section taken through KF of Fig. XI. Thetip end of the zone of junction («) is shown, and also the lateral portionof the dorsal lip of the blastopore. X 245. Pig. 41. Posterior end of a section taken through OH of Fig XI. Thereis no overhanging margin (dorsal lip) in this section, x 245. G

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