238 C. J. MARTIN. 
organ itself, were accounted for in the same way. These contrac- 
tions diminished or disappeared when the arterial pressure sank 
greatly after the introduction of the poison, and reappeared in 
those cases in which the pressure temporarily recovered, to vanish 
again as the pressure finally sank. 
Experiment 30—Dog, weight 13:5 kilos. ; curarised ; artificial : 
respiration ; carotid connected with a mercury manometer; vag! — 
cut; poison introduced through a cannula in the external jugs 
vein ; right kidney placed in oncometer. 
Time. Blood | Volume 
pressure of 
hrs. mins. secs.| in mm. | kidney. 
Normal 146. | normal | °000035 a per kilo. injected into 
jugular ve 
0= 0° 30 103 -1 ce. 
CO peas 0 81 — 21 ce. 
Oe 0 64 ° 
Oa 55 * 
Dich OD 52 * 
O60 44 * 
0: 16) =) 40 = 
0 10 .0 32 ah 
OG: 4626 30 * 
ee oe 18 * dead 
* Denotes that the diminution in volume of the organ is ~~ 
than the piston-recorder could indicate. 
Experiment 31—Dog, weight 9 kilos.; hypodermic injection & 
2 grains of morphia acetate ; ether ; vagi cut; carotid con 
with mercury manometer; poison introduced through a canna : 
external jugular vein ; right kidney placed in oncometer. 
Time. Blood Volume 
— | of 
hrs. mins. sees. mm. | kidney. SS ee 
SSRN ‘ected inte 
Normal 120 | normal | -000015 Aare sag per kilo. inj 
jugular vein 
aa Seay i 96 -1'8 cc 
OB. @ 73 * 
0 10-6 75 * 
0:20 0 90 * 
0 25 0 106 —1°8 ec. 
0 30 0 112 
0 42 0 
Remarks. 
oli i lr 
Remarks. 
-6 ce. 7 ie 
108 —7 ce. | animal bled to death. o 
