File:Journal of morphology (1909) (14750680086).jpg

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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:
most covered by amnioserosal fold.More pole-cells are inside of germ-band than in younger stage (H). Stage K. View of lateral surface of segmented germ-band. Nearly all ofthe pole-cells are now inside the embryo. Stage L. Lateral view after appearance of appendages. Tail-fold shorterthan in preceding stage (K). Germ-cells have separated to form a group oneither side of tail-fold in last two abdominal segments. Stage M. Upper figure represents ventral surface of embryo; lower figure,the posterior portion on dorsal surface. Tail-fold is short and broad. Germ-cells are closer to one another than in Stage L. Stage N. Upper figure represents ventral surface of embryo; lower figure,the tail-fold on the dorsal surface. Germ-cells form two definite compactgerm-glands. Stage O. Ventral view of embryo. End of tail-fold now coincident withposterior pole of egg. Germ-glands lie near ventral surface on either side ofmedian line. lERM-CELLS IN CHKYSOMELIU BEETLES. ItOKKHT WILFIELM IIEONEn. PLATE I.
Text Appearing After Image:
HE Journal of Morphology.—Vol. XX, No. 2. EXPLANATION OF PLATE II. A miiiiber in brackets refers to the figure from which the cells have beenenlarged. Fig. 1. Surface view of posterior end of an egg 2l^ hovus after deposition.The pole-disc occupies about % of the entire area. Only those yolk-globulesadjacent to the pole-disc are shown, a, circumference of egg indicated bysingle line. X 200. Figs. 2 to 4 represent portions of the posterior end of eggs in longitudinalsection showing the arrangement of the pole-disc granules, x 850. Fig. 2. Egg taken from the oviduct of Leptinotarsa. Granules of pole-discare here very close together forming a broken strand. Fig. 3. Egg 13 hours after laying. This egg contained about 133 nuclei.Granules of pole-disc suspended in the inner stratum of the Keimhautblastemforming a network. Fig. 4. Egg 11 hours after laying. Pole-disc granules widely separated fromone another. Figs. 5 to 11 represent longitudinal sections through the posterior end (exceptfi

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Author Wistar Institute of Anatomy and Biology
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(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Volume
InfoField
v. 20
Flickr tags
InfoField
  • bookid:journalofmorphol20wist
  • bookyear:1909
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Wistar_Institute_of_Anatomy_and_Biology
  • booksubject:Morphology
  • booksubject:Physiology
  • bookpublisher:Boston___Ginn___Co_
  • bookcontributor:MBLWHOI_Library
  • booksponsor:MBLWHOI_Library
  • bookleafnumber:392
  • bookcollection:biodiversity
  • bookcollection:MBLWHOI
  • bookcollection:blc
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
Flickr posted date
InfoField
29 July 2014


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