295 
EXPERIMENTS ON CAMPHOR. 
ber of small cysts which contained an aqueous fluid. The 
pulmonary substance was red, and the walls of the four cavities 
of the heart had several spots of ecchymosis under the internal 
membrane, and more numerous in the left venticle than in the 
right. The plexus ehoroides of the brain and the cerebellum 
were red and infiltrated. The nasal membrane was also red,and 
gorged witli blood. 
Another Experiment :—A sorrel-coloured cow, two years old, 
took an ounce and a half of camphor, suspended by the aid of 
the yolk of an egg in three pints of an aromatic infusion. It was 
scarcely given when she was seized with a convulsive cough, as 
if a portion of the drink had got into the trachea. The animal 
soon began to stagger, drew back from the manger, and pulled 
strongly on her halter. Her eyes became prominent, and the 
• temperament of the skin rose rapidly. The pulse became quick 
and hard, the respiration short, frequent and plaintive. The 
breath was very hot, smelling strongly of camphor. Convulsive 
motions of the back of the mouth, and of the neck, were ob¬ 
served. The head was drawn down to the breast by rapid and con¬ 
vulsive flexions. The mouth was filled with foam ; the eyes revol¬ 
ved in their orbits ; and the orifice of the nostrils was enarged. 
The respiration became more and more difficult, and the ani¬ 
mal seemed every minute nearly suffocated. She fell on her side, 
and got away from the manger; she arose, but only speedily to 
fall again. Her limbs seemed to be no longer under the controill 
of the will, and she had not the power to change her position, 
or to rise. At length death took place with violent and horrible 
convulsions. The examination, which took place almost immedi¬ 
ately, offered a few remarkable lesions. The ventricles of the brain 
w ere distended by a lemon-coloured watery fluid. The same pe¬ 
culiarity was also observed throughout the spinal canal, and es¬ 
pecially near its termination. The membranes of the spinal chord, 
through its whole extent, were injected and red. The mucous mem¬ 
brane of the back of the mouth, the true stomach, the intestines, 
and the larynx, was red, without any other particular alteration. 
Ecchymoses w r ere observed in the left ventricle of the heart. 
Every part of the animal w as so impregnated w r ith camphor, 
that, after a long cooking, the muscles and the liver preserved 
still the taste and strong smell of camphor. An alteration which 
we ought not to pass in silence, is, that the globules of blood 
were separated by an aeriform fluid. This phenomenon was re¬ 
marked in the vessels of the cerebrum and the cerebellum, and, 
above all, at the origin of the spinal chord, and in the coronary 
and spiral vessels of the heart. The lungs were puffed up, and 
the interlobular cellular tissue distended by an elastic fluid. 
Another cow aged four years, to which a like quantity of cam- 
