Gases of the Blood 603 



Brought slowly to normal pressure. 



At 5:07, at 25 cm.; 16 respirations of the same type. At 5:13, 

 normal pressure; 41 cc. of blood drawn, lost; at 6:20, 16 respirations, 

 same type; 41 cc. of blood of ordinary color drawn . . . . B 



Blood A (31 cm.) contains per 100 volumes: O 13.6; CO* 36.5 



Blood B (76 cm.) contains per 100 volumes: O 19.4; CO 48.4 



Experiment CLXXII. May 7; pressure 75 cm.; temperature 18°. 

 Female dog weighing 11 k. 



3:12. Put into receiver; at 3:25 lowered 40 cm. 



3:45, a decrease of 39 cm. (36 cm. of actual pressure); 21 to 24 

 respirations; 41 cc. of very dark blood drawn .... A 



3:50. Brought to 46 cm. pressure and maintained there. At 4:05, 

 41 cc. of blood, not so dark, drawn; 18 to 21 respirations . . . . B 



Brought to normal pressure, at 4:15; at 4:35, 30 respirations; at 5 

 o'clock, 41 cc. of not very red blood drawn . . . . C 



This dog, before blood was drawn, and after she was untied, 

 developed strange tonic and clonic convulsions, with corneal lack of 

 sensitivity and howls; the second attack was very severe, lasted 15 

 minutes at least, and was followed by a state of stupor, with little 

 plaintive cries; hysteria? epilepsy? 



Blood A (36 cm.) contains per 100 volumes: O- 8.9; CO 34.3. 



Blood B (46 cm.) contains per 100 volumes: O 13.2; CO 40.7 



Blood C (76 cm.) contains per 100 volumes: O 20.1; CO 41.1 



Experiment CLXXIII. May 8. Pressure 75.5 cm.; temperature 17°. 

 Little dog, weighing 5 k. 



At 4 o'clock, 33 cc. of very red blood drawn from the right carotid 

 . . . . A 



At 4:28, put into the receiver. At 4:35, pressure dropped 34 cm.; 

 13 respirations, deep; at 4:50, pressure dropped 50 cm.; 20 respirations, 

 shallower. At 5:05, pressure still at a diminution of 50 cm.; 18 respi- 

 rations; 35 cc. of very dark blood drawn . . . . B 



Blood A (75.5 cm.) contains per 100 volumes: O 22.6; CO 39.7. 



Blood B (25.5 cm.) contains per 100 volumes: O 9.8; CO? 23.1 



Experiment CLXXIV. May 9. Pressure 75.5 cm.; temperature 

 16.5°. Dog of Experiment CLXXI, still somewhat sick. Left carotid. 



At 3:30, drew 27.5 cc. of blood .... A 



At 3:50, put into receiver; at 4:03, the pressure is at 36 cm.; at 

 4:18, the same; 33 respirations, medium. Drew 41 cc. of very dark 

 blood . . . . B 



Blood A (75.5 cm.) contains per 100 volumes: O, 13.3; CO= 34.9. 



Blood B (36 cm.) contains per 100 volumes: O 8.5; CO 21.4. 



Experiment CLXXV. May 15. Pressure 76 cm.; temperature 17°. 

 Fat and strong female dog, which had eaten at noon. 



At 3:10, drew 34.5 cc. of blood from the right carotid; animal 

 quiet .... A 



At 3:20, put into the apparatus, howls, is uneasy; at 3:25, pressure 

 is 56 cm. At 3:35, pressure maintained; drew 34.5 cc. of blood, animal 

 quiet, 30 respirations; but has been very uneasy . . . . B 



