Page 9. 
Page 10. 
50 THE LAW WHICH REGULATES 
Resp. Pulse 
in a minute. in a minute Pressure 
40 186°5 6°45 inches 
In 8 minutes... 42 192 63 a 
» 2 x 40 188 64 » 
” 2 ” ets 184 674 ” 
ae aoe 49 182 66, 
a 52 164 685, 
ee ee aba 159 7 x 
” 1 ” ad 150 7 ” 
cS ee 70 138 a 
Sr ee = 142 67 oy, 
» 5 ” weed 149 68 ”» 
» 6 ” as 156 5'8 ” 
” 7 ” =m 168 64 ” 
Ree agen aa 102 Sy ae 
» 10 » y= 129 21 ” 
”» 5 ” bees 138 19 ” 
ee lg — 141 ae er 
ea ees 64 142 wt 3 
S'< oa - 138 4 Seale 
In this experiment the bleeding occurred from the carotid, and 
took place between the pulse countings, which were traced on a re- 
volving drum. The great fall in pressure indicates the excessive 
bleeding in one case. In others a much less quantity of blood was 
lost on each occasion. 
There was no bleeding after the fall in pressure to 1°7 inches, and 
from that time the pressure and pulse became less and less till the 
animal died. 
Experiment VI. A rabbit was made comatose by 15 grains of 
chloral, and was bled to death, the whole operation taking half an 
hour. An hemadynamometer was connected with the carotid, and 
the blood was lost from the jugular of the same side, in drops con- 
tinuously. The pressure, at first at about 6 inches, fell at the end of 
the experiment, to less than 1 inch, when death occurred. The fol- 
lowing are the pulse-rates taken at equal intervals during the half 
hour :— 
In 10 seconds. In 10 seconds. 
42°5 42°75 
41°9 43° 
44: : 42° 
43° 42° 
42°75 42°5 
41° 415 
A3° 42° 
Bleeding began.. 46° 42°4 
44°5 41° 
45°5 41°75 
44:75 42° 
