MEDICINES. 418 



Equivalents. 



A table-spoonful is equal to half an ounce by measure. 



A dessert-spoonful is equal to two fluid drachms. 



A tea-spoonful is equal to one fluid drachm. 



A wine-glassful is equal to one and a half fluid ounce. 



The surest way, however, to get the true quantity is to 

 have the article measured by properly graduated weights 

 and measures. It will not, however, be necessary to weigh 

 each powder separately. Thus, half a pound of ginger 

 can be easily divided into ten or twelve equal parts with 

 a knife, without the trouble of weighing each powder 

 separately. 



