756 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



health there can be no possible excuse of a valid nature to offer for 

 the exhibition of even minute quantities. That these minute quanti- 

 ties would not be dangerous, in so far as producing any fatal effect is 

 concerned, is conceded, but that, in the end, they do not produce an 

 injury, even in these small quantities, is certainly to be denied. 



The course of safety, therefore, in all these cases is to guard the 

 opening of the door. If the use of small quantities is permitted, then 

 there can never be any agreement among experts or others respecting 

 the magnitude of the "small quantity," and continued litigation and 

 disagreement must follow. On the other hand, when the harmfulness 

 of any substance which it is proposed to add to food is established and 

 no reason for its use can be given other than the convenience, care- 

 lessness, or indifference of the manufacturer, the exclusion of such 

 bodies entirely from food products follows as a logical sequence and a 

 hygienic necessity. 



