SODA MINTS 231 



The self-raising flour, so widely advertised by grocers, is 

 flour in which these ingredients or their equivalent have been 

 mixed. 



212. Soda Mints. Bicarbonate of soda is practically the sole 

 ingredient of the soda mints popularly sold for indigestion. 

 These correct a tendency to sour stomach because they 

 counteract the surplus acid in the stomach, and form with it 

 a safe neutral substance. 



Seidlitz powder is a simple remedy consisting of two pow- 

 ders, one containing bicarbonate of soda, and the other, some 

 acid such as cream of tartar. When these substances are 

 dissolved in water and mixed, effervescence occurs, carbon 

 dioxide escapes, and a solution of Rochelle salt remains. 



