224 Mr. Brodie's Observations and Experiments 
had its natural appearance ; but in the cardiac portion it was 
of a dark grey colour, was readily torn and peeled off; and 
in some parts its texture was completely destroyed, so that it 
appeared like a pulp, on removing which the muscular and 
peritoneal coats were exposed. 
The repetition of the experiment was attended with similar 
results. The alteration of the texture of the internal mem- 
brane appears to have been occasioned by its being chemically 
acted on by the corrosive sublimate injected into it. When 
the injection is made into the stomach of a dead rabbit, pre- 
cisely the same effects are produced, except that, as the middle 
contraction is here wanting, the appearances are not confined 
in the same degree to the cardiac portion. 
Experiment g. A scruple of corrosive sublimate, dissolved 
in six drams of distilled water, was injected into the stomach 
of a full grown cat. For the first five minutes no symptoms 
were produced. After this, the poison operated twice as an 
emetic. The animal appeared restless, and made expression 
of pain in the abdomen. He gradually became insensible, and 
lay on one side motionless, with the pupils of the eyes dilated. 
The respiration was laborious, and the pulse could not be felt. 
Twenty-five minutes after the poison was injected there was 
a convulsive action of the voluntary muscles, and death en- 
sued. On opening the thorax immediately afterwards, the 
heart was seen still contracting, but very feebly. 
The stomach was found perfectly empty and contracted. 
The mucous membrane was every where of a dark grey 
colour. It had lost its natural texture, and was readily torn 
and separated from the muscular coat. The internal mem- 
brane of the duodenum had a similar appearance, but in a less 
