eless and breathless, and the heart had
ceased to beat.

Slight tremors of the voluntary muscles, particularly of the limbs,
continued, more or less, for nineteen minutes after the animal was dead.
Those of the right side were observed to be more and longer affected
than those of the left.

Half an hour after death the body was opened, and the stomach and
intestines were found to be contracted and _firm_, as from a violent
and permanent spasm of the muscular coat. The lungs were empty and
collapsed. The left side of the heart, the aorta and its great branches
were loaded with black blood. The right side of the heart and the two
cavae contained some blood, but were not distended. The pulmonary artery
contained only a small quantity of blood. The blood was every where
fluid.

EXPERIMENT 2.

A cat was the subject of this experiment. The general effects were very
much like those in the last, excepting, perhaps, that the oil operated
with a little less energy. This cat was said to have lived for several
years, in a room almost perpetually fumigated with tobacco smoke. The
history of the animal employed in Experiment 1, was unknown.

EXPERIMENT 3.

Three drops of the oil of tobacco were rubbed upon the tongue of a
full-sized, but young, cat. In an instant the pupils were dilated and
the breathing convulsed; the animal leaped about as if distracted, and
presently took two or three rapid turns in a small circle, then dropped
upon the floor in frightful convulsions, and was dead in _two minutes_
and _forty-five_ seconds from the moment that the oil was put upon the
tongue.

EXPERIMENT 4.

To the tongue of a young and rather less than half-grown cat, a drop of
the oil of tobacco was applied. In fifteen seconds the ears were thrown
into rapid and convulsive motions,--thirty seconds fruitless attempts
to vomit. In one minute convulsive respiration; the animal fell upon the
side. In four minutes and twenty seconds violent convulsions. In five
minutes the breathing and the heart's motion had ceased. There was no
evacuation by the mouth or otherwise. The vital powers had been too
suddenly and too far reduced to admit of a reaction. The tremors, which
followed death, subsided first in the superior extremities, and in five
minutes ceased altogether. The muscles were perfectly flaccid.

EX