wet be 7 ~~ 
THE FREQUENCY OF THE PULSE. 4G 
Experiment IV. An old donkey which had been standing for more 
than half-an-hour in the room in which the experiment was conducted, 
had at 7.30 4.m.a pulse of 34a minute. At 7.40 half an ounce of 
chloral hydrate was given it in 2 oz. of water. 
At a minute 
7.50 46 Standing unsteadily as if intoxicated. 
7.52’ It fell down asleep. 
755 43 
7.59 40 : 
8.8’ 48 A tap having been put in the jugular vein, but no 
bleeding having occurred. 
8.12’ 52 Bleeding slowly from jugular. 
8.15’ 67 
3 64 Minute after minute, the animal having lost altogether 
a 62 about one pint or a little more of blood. 
» 60 
8.19 59 Bleeding freely. 
8.20’ 52 Bleeding ceased. 
8.21’ 49 » ” 
8.22’ 48 ” 2 
8.22’ 30” Bleeding resumed. 
8.23’ 30” 49 Bleeding. Resp. 11°5. 
8.24 15” Bleeding ceased after loss of another pint and half. Page 8. 
8.24’ 30” 43 Bleeding ceased. 
8.25’ 15” 42 No bleeding. Resp. 11°5 
8.26 42 a 
8.28’ 15” 42 Bleeding freely. 
8.30’ 30” 42 os » Resp. 13. 
8.34 30” 37 3 “ 
8.36 38 . ¥ 
8.40 37 » ” 
8.42’ 35 9 » Resp. 14. 
8.45’ 36 % » Resp. 16. 
and from this time until 9.10, by which time more than half a pailful 
of blood had been lost and the carotid pulsations were very feeble, the 
pulse remained at 35°6 to 35 in a minute, with the respirations varying 
from 12 to 13 in the same time, and the loss of blood being continuous 
throughout. 
The animal did not move once through the whole experiment. 
Experiment V. A terrier dog had 30 grains of chloral given it in 
two doses, 15 grains first and another 15 grains about an hour after- 
wards. This did not render it quite comatose, so it sniffed chloroform 
until insensible, when a hemadynamometer was connected with one of 
_ its carotids, and a pressure of 6°6 inches was immediately registered, 
which was steadily maintained, undulating with the respiration. 
