109 



and Drugs Act. The amount of boric acid fed is by no means 

 excessive since it is only equal to 51b. of a Bombay 

 cotton cake containing 1 per cent, boric acid, an amount which 

 might be exceeded in practice. Further ft will be seen that 

 by feeding 81b. of Bombay cotton cake containing 015 per 

 cent, of boric acid, the milk would contain O'OOl per cent, 

 boric acid. 



The following table gives the result of the experiment : 



TABLE XLVL BORIC ACID IN MILK. 

 EXPERIMENT M. 



Date. 

 May 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 1? 

 18 



Lot I. 



Boric 

 meal-fed. 



Ibs. 



Boric acid 

 in milk. 



parts 



per million. 

 

 

 

 

 

 

 

 

 

 

 

 

 10 

 



Lot II. 



Boric Boric acid 

 meal-fed. in milk. 



EXPERIMENT N. 



This experiment was designed to find out whether very 

 small amounts of boric acid in foods would get into the milk. 

 In this experiment there were two lots of five cows each, but the 

 " boric meal " was made to contain only 1 per cent, of boric 

 acid instead of 5 per cent. It will be seen in Table XL VII. 

 that the results of this experiment followed closely on those 

 of the Experiment "N, about one seventieth of the boric acid 

 fed being returned in the milk. As the testing was carried out 

 more delicately than before, minute traces of boric acid were 

 found in the preliminary tests before any boric acid had even 



