SULPHUROUS ACID AND SULPHITES. 



881 



to diminish the number of white corpuscles, which are more than a 

 thousand less than in the fore period. This loss is partially restored 

 in the after period. The color index is increased during the pre- 

 servative period, falling in the after period. 



The data collected, therefore, are very striking in showing the 

 tendency of the sulphurous acid to diminish the number of corpus- 

 cles in the blood, both red and white, and also to diminish slightly 

 the intensity of the color of the blood. These results of the investi- 

 gation are worthy of especial consideration. 



TABLE XIII. Average, by periods, of corpuscles and hemoglobin in the blood, Series VII. 



a Color index is the percentage of hemoglobin divided by the percentage of red blood corpuscles; 

 5,000,000 is taken as the normal number of red blood corpuscles. 



