618 
DR. A. GAMGEE ON THE ACTION OF NITRITES ON BLOOD. 
100 volumes of arterialized blood of the Sheep treated with nitrite of amyl yielded — 
At 0° C. and 0 m, 760 pressure. 
At 0° C. and 1 metre pressure. 
Total gases 
51*84 vols. 
39-39 vols. 
Oxygen 
3-78 „ 
2*87 „ 
Carbonic acid 
45*54 „ 
34*61 „ 
Nitrogen 
2*52 „ 
1*91 „ 
V. In this experiment the same blood was used as in the last, but without the addition 
of nitrite of amyl. 
Unfortunately the blood was allowed to spurt into the U-tube, and the contents of the 
latter beginning to froth, I discontinued the pumping before the gas had been entirely 
removed. As by far the larger part of the gas had been obtained, I considered that it 
would be amply sufficient for the purpose of comparison with IV. 
Weight of blood used ... 37 grammes. 
Volume of blood used . . . 34‘97 cub. centims. 
Total gases obtained .... 147-4 vols. 
After absorption of C0 2 . . . 7T62 ,, 
After absorption of O . . . 6-94 „ 
Composition of gas in 100 parts. 
Oxygen 43-87 
Carbonic acid .... 51 ‘41 
Nitrogen 4 -72 
100-00 
Total gases obtained 147-4 vols.=16-42 cub. centims. at 0° and 0 m -760. 
Oxygen .... 64-68 „ = 7-20 
Carbonic acid . . 75-78 „ = 8-44 „ „ 
Nitrogen .... 6-94 „ = 0’77 „ „ 
100 volumes of arterialized blood of the Sheep evolved. (Exhaustion not completed.) 
At 0° C. and 0 m, 76 pressure. 
At 0° C. and 1 metre pressure. 
Total gases 
46*95 vols. 
35*68 vols. 
Oxygen 
20*58 „ 
15*64 „ 
Carbonic acid 
24*13 „ 
18*33 „ 
Nitrogen 
2*24 „ 
1*71 „ 
VI. Five drops of nitrite of amyl were added to 50 cub. centims. of blood of the Sheep. 
Before the addition of the nitrite the blood had been thoroughly arterialized. 
Weight of blood used . . . 28 - 7 grammes. 
Volume of blood 27'3 cub. centims. 
Exhaustion was carried on for one hour. The temperature of the bath in which the 
blood-receptacle was plunged was at first 100° Fahr., and was raised gradually to 120°. 
