Failure of sight from railway and other injuries of the spine and head : its nature and treatment, with a physiological and pathological disquisition into the influence of the vaso-motor nerves on the circulation of the blood in the extreme vessels / by Thomas Wharton Jones.

  • Jones, Thomas Wharton, 1808-1891.
Date:
1869
Catalogue details

Licence: Public Domain Mark

Credit: Failure of sight from railway and other injuries of the spine and head : its nature and treatment, with a physiological and pathological disquisition into the influence of the vaso-motor nerves on the circulation of the blood in the extreme vessels / by Thomas Wharton Jones. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    blood corpuscles of the crab is in all respects applicable to those of the lobster.* The blood corpuscles of other invertebrate animals undergo similar changes of shape, but it is not neces- sary to particularise them here. CHANGES OF FORM WHICH THE RED CORPUSCLES OF THE BLOOD UNDERGO. After the account just given of the amceba-like changes of shape which the colourless corpuscles under- go, there remain to be noticed such changes in shape as the red corpuscles are observed to present. The red corpuscles are yielding and elastic, so that they readily change shape when slightly pressed upon, like partially-filled bladders, which, indeed, they are, and as readily regain their original form when they have escaped from the compressing agent. In consequence of this property the corpuscles glide along in their vessels, with great ease accommodating themselves to all obstacles and to each other. At pages 92 and 93, a difference in the appearance of the red corpuscles within the vessels of the web and those of the lungs is pointed out. Within the vessels of the lungs they are seen to be less flat-looking and more flexible and to accommodate themselves more easily to any obstacle. * The changes of form which the blood corpuscles of the lobster, like those of the crab, undergo after the blood is drawn were described and delineated by Hewson as accurately as his microscope appears to have enabled him to observe them.