SULPHUROUS ACID AND SULPHITES. 



767 



sulphite and 2 grams as sulphurous acid gas, with the exception of 

 No. 7, who received only 1 .6 grams. During the third preservative sub- 

 period the total quantity of sulphurous acid as sulphites administered 

 was 3.81 grams for all except No. 5, who received 2.54 grams. The 

 quantity of sulphurous acid gas administered was 2 grams with the 

 exception of No. 7, who received 1.8 grams, and of No. 12, who received 

 1.6 grams. For the fourth preservative subperiod the total quantity 

 of sulphurous acid given as sodium sulphite was 3.81 grams for Nos. 

 1 and 2, 0.381 gram for No. 3, 5.1 grams for No. 4, and none at all 

 for Nos. 5 and 6, who had become so ill that they could not take any 

 more of the preservative. The quantity administered during the 

 fourth preservative subperiod as sulphurous acid gas was 2 grams, 

 except in the cases of Nos. 7 and 12, who by reason of illness took 

 none at all. 



The total and average amounts of the preservative administered 

 and all individual variations in the quantities taken, may be found in 

 Table II. 



TABLE II. Schedule of administration of preservative, Series VII. 



