File:Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus (1953) (20047812224).jpg

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
Source: Wikipedia, the free encyclopedia.

Original file ‎(1,878 × 1,822 pixels, file size: 927 KB, MIME type: image/jpeg)

Summary

Description
English:

Title: Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus
Identifier: comparativeembry00nels (find matches)
Year: 1953 (1950s)
Authors: Nelsen, Olin E. (Olin Everett), b. 1898
Subjects: Vertebrates -- Embryology; Comparative embryology
Publisher: New York, Blakiston
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
GASTRULATION IN VARIOUS CHORDATA 409 in a manner similar to the pre-chordal and notochordal cells; rather, upon reaching the edge of the blastopore, it involutes over the lip, then insinuates itself between the inside entoderm and the external surface layer of cells, and, in this position, passes inward and forward between the entoderm and the external layer of cells (figs. 19IH; 198A).
Text Appearing After Image:
YOLK PLUG Fig. 191. Migration of the presumptive organ-forming areas of the blastula during gastrulation in the amphibia (with reference particularly to the frog). (See fig. 192.) (A) Late blastula, sagittal section through midplane of future embryo. (B-F) Observe processes of epiboly and emboly. In epiboly, the black (neural) and white (epidermal) areas become extended and gradually envelop (fig. 192A) the inward moving notochord, entoderm, and mesoderm. The processes concerned with emboly bring about the inward migration of the latter presumptive areas. (G) Late gastrular condition, with neural area and upper portion of the epidermal area removed to show relationships of the middle germ layer of chordamesoderm. (H) Horizontal section of middle gastrular condition, showing involution of mesoderm between entoderm and ectoderm. (I) Late gastrula, horizontal section, showing yolk plug, mesoderm, and final engulfment of blastocoelic space by entoderm.

Note About Images

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 work.
Date
Source

https://www.flickr.com/photos/internetarchivebookimages/20047812224/

Author Internet Archive Book Images
Permission
(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.
Flickr tags
InfoField
  • bookid:comparativeembry00nels
  • bookyear:1953
  • bookdecade:1950
  • bookcentury:1900
  • bookauthor:Nelsen_Olin_E_Olin_Everett_b_1898
  • booksubject:Vertebrates_Embryology
  • booksubject:Comparative_embryology
  • bookpublisher:New_York_Blakiston
  • bookcontributor:MBLWHOI_Library
  • booksponsor:MBLWHOI_Library
  • bookleafnumber:435
  • bookcollection:biodiversity
  • bookcollection:MBLWHOI
  • bookcollection:blc
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
Flickr posted date
InfoField
18 August 2015
The categories of this image need checking. You can do so here.
  • Please remove redundant categories and try to put this image in the most specific category/categories.
  • You can remove this template by clicking here (or on the first line).



Licensing

This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.

العربية ∙ беларуская (тарашкевіца) ∙ čeština ∙ Deutsch ∙ Ελληνικά ∙ English ∙ español ∙ français ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ Nederlands ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ ไทย ∙ Tiếng Việt ∙ 中文（简体） ∙ 中文（繁體） ∙ +/−

Flag of the United States
Flag of the United States
This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/20047812224. It was reviewed on 27 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

27 September 2015

[[Category:Blastula]

Captions

Add a one-line explanation of what this file represents

Items getoond in dit bestand

depicts

media type

image/jpeg

checksum

50c55d2cde1d939f4f5d22d6f2a90deace8c51f8

determination method: SHA-1

data size

949,753 byte

height

1,822 pixel

width

1,878 pixel

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current11:29, 27 September 2015Thumbnail for version as of 11:29, 27 September 20151,878 × 1,822 (927 KB)Fæ== {{int:filedesc}} == {{information |description={{en|1=<br> '''Title''': Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus<br> '''Identifier''': comparativeembry00nels ([https://commons.wikimedia.org/w/ind...
The following pages on the English Wikipedia use this file (pages on other projects are not listed):

Global file usage

The following other wikis use this file:

  • Usage on az.wikipedia.org
Retrieved from "https://en.wikipedia.org/wiki/File:Comparative_embryology_of_the_vertebrates;_with_2057_drawings_and_photos._grouped_as_380_illus_(1953)_(20047812224).jpg"