BIOCHEMISTRY AND TAXONOMY 



319 



Fig. 89 — Oxygen absorption curves for various bloods and coelomic fluids con- 

 taining haemoglobin under "arterial" conditions reproduced in vitro. The 

 black circles indicate the value of the arterial poi- 



100 



10 20 30 40 50 60 70 80 90 100 



Fig. 90 — Oxygen absorption curves for a number of "milieux interieurs" con- 

 taining haemoglobin. The temperature is given and the pH except in the case 

 of the Frog and Amphiuma, where the partial pressure of carbon dioxide 



is listed. 



