42 Mr. Brodie’s Experiments on the 
temperature of the room was 57 0 . The heat in the rectum, 
at the commencement of the experiment, was ioi-|-. The arti- 
ficial respirations were made to resemble the natural respir- 
ations as much as possible, both in fullness and frequency. 
At 15 minutes from the time of the spinal marrow being 
divided, the heat in the rectum had fallen to 984-°. 
At the end of half an hour the heart was felt through the 
ribs, acting strongly 140 times in a minute. 
At 45 minutes the pulse was still 140; the heat in the rectum 
was 94 0 . 
At the end of an hour the pulse continued 140 in a minute ; 
the heat in the rectum was 92 0 ; among the viscera of the abdo- 
men 94 0 ; in the thorax, between the lungsand pericardium, 92 0 . 
During the experiment, the blood in the femoral artery was 
seen to be of a bright florid colour, and that in the femoral 
vein of a dark colour, as usual. 
The rabbit voided urine at the commencement of the 
experiment ; at the end of the experiment, no urine was 
found in the bladder. 
Experiment 6. 
I procured two rabbits of the same colour, but one of them 
was about one-fifth smaller than the other. I divided the 
spinal marrow of the larger rabbit between the occiput and 
atlas. Having secured the vessels in the neck, and removed the 
head, I kept up the circulation by means of artificial respiration 
as in the former experiments. The respirations were made as 
nearly as possibble similar to natural respirations. 
In 23 minutes after the spinal marrow was divided, the 
pulse was strong, and 130 in a minute : the ball of the ther- 
mometer being placed among the viscera of the abdomen, the 
mercury stood at 96°. 
