EXPLANATION OF PLATE II.
This Plate represents the course of the minute
arteries and veins in the web of the frog.
The arteries are seen as small black lines
which merely divide into smaller branches.
The veins are seen in nearly equal number,
more varied and tortuous in their course, and
presenting frequent anastomoses.
The arrows denote the directions in which the
globules of blood flow along these anastomosing
branches.
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