384 Mr. Brodie’s Experiments and Obseixations 
Exp . gr. Thermometer 64°, barometer 30.2 inches. 
A young rabbit, occupying the space of 48 cubic inches, was; 
allowed to remain under the bell-glass, during the same pe- 
riod as in the two former instances. The respired air contained 
To of carbonic acid. 
i o 
The results of this were therefore precisely the same as those 
of the last experiment. 
These experiments were made with great care. The ani- 
mals did not appear to suffer any inconvenience from their 
confinement, and their temperature was unaltered. 
The next order of experiments were made for the purpose 
of ascertaining the quantity of air consumed by animals, in 
which the circulation of the blood was kept up by means of 
artificial respiration, after the brain had ceased to perform its 
functions!. 
Exp. 4. Thermometer 65°, barometer not noted. 
Having procured two rabbits of the same size and colour, I 
divided the spinal marrow in the upper part of the neck of 
one of them. An opening was made in the trachea, and the 
lungs were inflated at first by means of a small pair of bellows. 
Two ligatures were passed round the neck, one in the upper, 
and the other in the lower part, behind the trachea. The liga- 
tures were drawn tight, including every thing but the trachea; 
and the nerves, vessels, and other soft parts between them 
were divided with a bistoury. Eight minutes after the division 
of the spinal marrow, the thermometer in the rectum had 
sunk to 97 0 . The animal was placed under a bell-glass, and 
the lungs were inflated by pressing on the gum-bottle about 
502 + 52 4- 2 — 48 
18 
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