7000 



6000 



5000 



4000 



3000 



2500 



500000 



100000 



0000 



- 1000 



100 



7000 



6000 



5000 



4000 



3000 



10 



2500 



Data for oxyhemoglobin and hemoglobin, ultraviolet, from Sidwell, Munch, Barron, and Hog- 

 ness {35Jf9). Data for carboxyhemoglobin and hemiglobin from Hicks and Holden {1270). 



