THE CHEMISTRY OF RESPIRATION 



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FIG. 496. Dissociation curve of haemoglobin in various solvents. 

 I, in water ; II, in 0-7 per cent. NaCl ; III, in 0-9 per cent. KCl. 

 (BARCROFT.) 



Q 10. 20 30 



50 60 70 BO 90 100 110 42Q 130 1W 450 



FIG. 497. Effect of varying tensions of CO 2 on the dissociation curve of oxyhsemo- 

 globin. The lowest curve is the dissociation at a C0 2 tension of 420 mm. Hg. from 

 observations by Barcroft. (BOHR.) 



