152 THE ROYAL SOCIETY OF CANADA 



On account of the possibly greater value of the products — hip- 

 puric acid, benzoic acid and glycocoU — it would seem desirable to use 

 fresh urine, but so far it has not been determined if this would be 

 generally possible under ordinary stable conditions. 



In this simple method of acidification and cooling to 0°C it 

 would appear that we have the basis of an economic process for the 

 production of benzoic acid from urine, which might be employed over 

 a large part of the Dominion during the winter months. The modern 

 cow barn with its concrete gutter would much facilitate the col- 

 lection of the urine and where twenty-five or more head of stock are 

 housed in the same building, as is now frequently the case on dairy 

 farms, there would seem to be the possibility of* making the prepar- 

 ation of this by-product a profitable adjunct to the dairy business. 



