The effect of diet on the dissociation curve of blood 229 



circles are those determined on the fourth day of the diet with an 

 alveolar pressure of 29 '5 mm. So far as can be seen from inspection 

 of Fig. 110 A the curve remains mesectic in spite of the changed 



100 



90 



80 



10 20 30 40 50 60 



100 



10 



50 



an 70 



FIG. 110. Dissociation curves of Higgins' normal blood (normal alveolar CO._, pressure). 

 A, exp. Sept. 8, 1911, o = points determined at existing alveolar C0 2 pressure when on 

 diet; =the same blood exposed to his usual C0 2 pressure. B, exp. Jan. 1911, 

 o = points determined during diet at existing C0 2 pressure; x = points determined 

 previous to, and + subsequent to, diet at normal C0 2 pressure. 



condition of the blood caused by the decline in the alveolar pressure 

 of carbonic acid. The most obvious question which will occur to the 



