Results of a Biological Survey of the San Francisco Mountain Region and Desert of the Little Colorado, Arizona Page: Front Inside
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All measurements of specimens are in millimeters.
All MAMMALS collected by Field Agents of the Division are measured in accordance
with the following instructions:
(1) The TOTAL LENGTH is the distance between the tip of the nose and the end of
the tail vertebrae. It is taken by laying the animal on a board, with its nose against
a pin or upright post, and by straightening the back and tail by extending the hind
legs with one hand while holdingthe head with the other; a pin is then driven into
the board at the end of the vertebra.
(2) THE LENGTH OF TAIL is the length of the caudal vertebra. It is taken by
erecting the tail at right angle to the back, and placing one point of the dividers on
the backbone at the very root of the tail, the othei at the tip end of the vertebra.
(3) The HIND FOOT is measured by placing one point of the dividers against the
end of the heel (calcaneum), the other at the tip of the longest claw, the foot being
flattened for this purpose.
In measuring the hind foot in dry skins, the foot is fist wrapped in wet absorbent.
cotton until the toes can be straightened.
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Merriam, C. Hart & Stejneger, Leonhard. Results of a Biological Survey of the San Francisco Mountain Region and Desert of the Little Colorado, Arizona, report, September 11, 1890; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc700953/m1/2/: accessed December 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.