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SELECTED ARTICLES. 
The effect was evident in 34 minutes (four minutes more than 
in the previous experiment,) when the animal fell, senseless 
and motionless; artificial respiration was carried on for two 
hours, at which time natural respiration commenced ; the ass 
was so far recovered at the end of six hours as to get up and 
stand by itself. This experiment may then be looked upon 
as more satisfactory than the previous one, and it shows how 
very much sooner the animal may be restored after having a 
smaller dose of the poison administered, and that its effect is 
much more transitory. 
The advantage derived from these experiments on the 
lower animals, is the hope that this agent may be applied, and 
prove to be successful, in the cure of hydrophobia, a malady 
which, up to the present time, has defied all treatment; if it is 
brought to bear, its action appears to be to suspend animation, 
and so far exhaust the powers of the body as to turn out, 
or destroy the hydrophobic poison. 
During the afternoon of Monday, to prove the virulence of 
the Wourali poison to a medical gentleman who had been pre- 
vented from witnessing the experiments, Mr. Waterton in- 
serted a dart near the shoulder of a small spaniel; in about 
seven minutes and a half the poison began to take effect, and 
in nine minutes pulsation ceased. 
Between the hours of four and five on Tuesday afternoon 
the second ass was so much recovered as to be able to carry 
Mr. Waterton round the room. 
Since my discovery of the gases circulating in our arterial 
and venal blood, we have been enabled to explain the phe- 
nomena of the action of the Wourali poison in such cases. 
We find that, in the first experiment, artificial respiration 
was not employed, and that the deleterious effects of the poi- 
son were allowed to take their course upon the sensorium 
commune; hence the absorption of atmospherical air into the 
extreme branches of the pulmonary veins was prevented. 
In the second experiment, the animal's life was saved by 
