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File:The biology of the frog (1906) (19761470733).jpg

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Title: The biology of the frog
Identifier: biologyoffrog01holm (find matches)
Year: 1906 (1900s)
Authors: Holmes, Samuel J. (Samuel Jackson), 1868-1964
Subjects: Frogs
Publisher: New York, The Macmillan company;(etc. ,etc. )
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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lOO THE BIOLOGY OF THE FROG CHAP. As the above changes are taking place the embryo elongates in the direction of the neural tube, which marks the longitudinal axis of the future animal. On either side of the anterior end of the neural tube there appears a pair
Text Appearing After Image:
Fig. 23.— Development of the embryo. A, yolk-plug stage; B, showing the medullary folds, the blastopore nearly closed, and below the latter the invagination which is to form the anus; C, D, later stages; E, the medullary folds have grown together and covered the blastopore. Above the anus is the rudiment of the tail. (From Morgan, after Ziegler.) of thickenings of the ectoderm. The anterior members of each pair, the sense plates, grow forward and meet in front of the end of the neural tube ; a depression appears in each plate and marks the beginning of the ventral sucker of the tadpole.

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https://www.flickr.com/photos/internetarchivebookimages/19761470733/

Author Internet Archive Book Images
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Flickr tags
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  • bookid:biologyoffrog01holm
  • bookyear:1906
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Holmes_Samuel_J_Samuel_Jackson_1868_1964
  • booksubject:Frogs
  • bookpublisher:New_York_The_Macmillan_company_etc_etc_
  • bookcontributor:Smithsonian_Libraries
  • booksponsor:Smithsonian_Libraries
  • bookleafnumber:116
  • bookcollection:biodiversity
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
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7 August 2015

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