EXPLANATION OF PLATE IX.
This Plate displays the course of the artery
seen to pulsate after the removal of the heart,
in the frog and toad.
This pulsation is seen above and below the
transverse process. Viewed under the microscope,
the artery is observed to become straighter and
paler, whilst the globules of blood contained in
the branch given off to the right, are perceived
to oscillate.
Another pulsating artery is represented situated
higher up. Not being so curved, or so bound
down, its pulsations are not nearly so obvious
as those of the artery which passes under the
transverse process.
