On burning a paw, there was A STEADY RISE OF
PRESSURE."
EXPERIMENT 22. "Dog. On burning a paw, there was A RISE IN PRESSURE
OF 36 MILLIMETRES."
EXPERIMENT 24. "On burning a paw, there was A RISE OF BLOOD-PRESSURE
OF 12 MILLIMETRES.
"12.19. On burning a paw, there was A RISE OF PRESSURE
OF 18 MILLIMETRES."
EXPERIMENT 29. "2.13. Blood-pressure 43. On burning a paw it rose 12
millimetres.
"2.30. On burning a paw, THERE WAS A RISE OF BLOOD-
PRESSURE."
"3.6. On burning a paw, THERE WAS A RISE OF BLOOD-
PRESSURE."
EXPERIMENT 31. "3.35. On burning a paw, THERE WAS A RISE OF PRESSURE.
"4.14. On burning a paw, THERE WAS A RISE OF
PRESSURE."

The foregoing experiments are not quoted in full; in many of them, at
intervals, the animals were bled; and these observations of the
effects of "burning a paw" were incidental to others. BUT WHY ALL
THIS BURNING AND STIMULATION TO PROVE A PHENOMENON SO UNIFORM?

One exceptional experiment must not be overlooked. On one occasion
two dogs were vivisected at the same time. At the outset a paw of
each dog was burned, causing A RISE of blood-pressure in each case. A
little later the sciatic nerve was stimulated:

"11.25. On stimulating the sciatic nerves of each dog, Dog A showed a
rising and falling pressure, and Dog B (MORE ETHER WAS GIVEN JUST
THEN) showed an initial FALL, and a rise, with a sudden second FALL
and a rise.

"11.32. BOTH DOGS WERE DEEPLY ANAESTHETIZED. Dog A: Stimulation
PRODUCED NO EFFECT. Dog B: On stimulating the sciatic nerve, there
was A FALL OF (BLOOD)-PRESSURE, WITH SLOW RECOVERY."

Here we have recorded by the experimenter himself the difference in
the effect of stimulation of nerves in an animal "deeply
anaesthetized" and the results produced when the anaesthesia was
light.

It has seemed necessary to examine at some length these peculiar
experiments. The volumes describing them are not easily to be seen;
some appear to be out of print; even Sir Victor Horsley; in whose
laboratory in London some of the experiments were performed, confessed
that he did not know about the vivisections made in the United
States--whether or not they differed from those performed in England.
In the vast number of these vivisections, so far beyond anything
previously reported in our cou