File:The biology of dragonflies (Odonata or Paraneuroptera) (1917) (20194335058).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(1,582 × 690 pixels, file size: 170 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
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).



Description
English:

Title: The biology of dragonflies (Odonata or Paraneuroptera)
Identifier: biologyofdragonf00till (find matches)
Year: 1917 (1910s)
Authors: Tillyard, Robin John, 1881-1937
Subjects: Dragon-flies
Publisher: Cambridge (Eng. ) : University Press
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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:
102 THE ALIMENTARY AND EXCRETORY SYSTEMS (CH. hypopharynx stands up in the cavity like a tongue, but appears to be an organ of touch rather than of taste. The epipharynx. on the other hand, is only slightly convex, and does not project appreciably into the cavity. The base of insertion of the hypo- pharynx lies far back on the labium. Quite close to it, in well-grown larvae and in imagines only, opens the duct of the salivary glands. The Salivary Glands (fig. 45) have been investigated by N. Poletaieft" (122,123) and Bordas (12). They are two in number, very small, and placed laterally in the prothorax, on either side and close to the oesophagus. Each complete gland consists of a large number of tiny acini or grape-shaped glands (fig. 45 d), ranging
Text Appearing After Image:
Fig. 45. Salivary glands, a. LibeUuhi depressa Linn. b. Platycnemis pennipes Pallas. c. Agrion jmella Linn. d. Lestes viridis Vand. E. Calopteryx virgo Linn., reservoirs, ac acini; b posterior border of prothorax; bm base- ment membrane; c lumen of acinus; ep epithelium of acinus; (/^ prothoracic nerve-ganglion; hyp hypopharynx; oe oesophagus; sd salivary duct; sg salivary gland; sp spiral ridge of intima of duct; sr salivary reservoir. In D the top left-hand acinus is shewn in section, and only a small portion of the whole gland is shewn, much enlarged. After Bordas. from fifty in the smaller Zygoptera to over one hundred and fifty in the Anisoptera. The acini are usually broadly ovoid or pear-shaped. In Agrion (c), however, they are elongated. Each is lined internally by a single layer of secreting cells (ep), hexagonal, and resting on an outer basement membrane (6w). A dehcate chitinous intima (not visible in the figure) lines the lumen of the acinus internally. This is continued into the narrow mouth or duct of the acinus, and beyond into the main salivary duct (sd), where it becomes raised up into a spiral ridge (sj)) resembling the spiral thread of tracheae. The salivary ducts are narrow, and pass forwards, one on either side

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/20194335058/

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:biologyofdragonf00till
  • bookyear:1917
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Tillyard_Robin_John_1881_1937
  • booksubject:Dragon_flies
  • bookpublisher:Cambridge_Eng_University_Press
  • bookcontributor:University_of_California_Libraries
  • booksponsor:Internet_Archive
  • bookleafnumber:124
  • bookcollection:cdl
  • bookcollection:americana
  • BHL Collection
Flickr posted date
InfoField
7 August 2015

Licensing

[edit]
This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as:
  1. The copyright is in the public domain because it has expired;
  2. The copyright was injected into the public domain for other reasons, such as failure to adhere to required formalities or conditions;
  3. The institution owns the copyright but is not interested in exercising control; or
  4. The institution has legal rights sufficient to authorize others to use the work without restrictions.

More information can be found at https://flickr.com/commons/usage/.

Please add additional copyright tags to this image if more specific information about copyright status can be determined. See Commons:Licensing for more information.
This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/20194335058. It was reviewed on 19 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

19 September 2015

File history

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

Date/TimeThumbnailDimensionsUserComment
current19:41, 19 September 2015Thumbnail for version as of 19:41, 19 September 20151,582 × 690 (170 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Title''': The biology of dragonflies (Odonata or Paraneuroptera)<br> '''Identifier''': biologyofdragonf00till ([https://commons.wikimedia.org/w/index.php?title=Special%3ASea...

You cannot overwrite this file.

There are no pages that use this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:The_biology_of_dragonflies_(Odonata_or_Paraneuroptera)_(1917)_(20194335058).jpg&oldid=610263163"