31 
The excretion of cyanogen was as follows: 
Day. 
Cyanogen. 
First day 
Milligrams. 
32.35 
2.60 
4.64 
Second day 
Third day 
Total 
39.59 
Thirty-nine and fifty-nine hundredths milligrams cyanogen cor- 
responds to 123.4 milligrams sodium sulphocyanate ; 88 per cent of 
the sodium sulphocyanate administered was therefore recovered from 
the urine. 
In the following experiments the sodium sulphocyanate was ad- 
ministered jper os; this method is unsatisfactory since the element of 
absorption from the intestinal tract is involved. 
Date. 
Weight of 
guinea pig. 
Remarks. 
December 13, 1905 
December 29, 1905 
January 2, 1906 
Grams. 
505 
435 
30 per cent alcohol on part of food. 
40 per cent alcohol on part of food. 
50 per cent alcohol on part of food. 
February 2, 1906 
February 6, 1906 
510 
March 5, 1906 
450 
April 13’ 1906 
690 
June 22, 1906 
620 
July 13,' 1906. : 
730 
September 17, 1906 . ..... 
710 
213 milligrams sodium sulphocyanate (0. 3 
milligram per gram) per os. Survived. 
The excretion of sulphocyanate (calculated as the sodium salt) was 
as follows : 
Day. 
Sodium sulpho- 
cyanate. 
First day . 
Milligrams. 
75.33 
Second day 
27.14 
Third day 
8.51 
Total 
110. 98 
Thus 52.1 per cent of the sodium sulphocyanate administered per 
os reappeared in the urine in three days. 
