72 



Pre&cri'pU 



WATER DRESSING. A soft cloth saturated with coldest 

 water, covered with waxed or oil cloth, to be changed at least 

 every three hours. To make water cold, nitre may be dissolved 

 in it, but must be used at once. The hydropathic treatment 

 for sores. 



WEIGHTS and MEASURES for medicines : — 



Dry measure. 



20 grains ... ... ... one scruple. 



60 grains ... ... ... one drachm. 



437*5 grains ... ... ... one ounce. 



7000 grains ... ... ... one pound. 



'Note. — Though the terms scruple and drachm were officially 

 abolished years ago, they are both still used in practice. 



Liquid 



60 minims 



8 drachms 



20 ounces 



8 pints 



one drachm 



one ounce, 



one pint, 



one gallon. 



FOR EMERGENCIES, when proper weights are not procur- 

 able, remember the following rough equivalent: — 



3 drachms or 180 grains, 

 li^ drachms or 90 ,, 



One rupee 



An eight-anna piece 



A fom'-anna piece 



A two-anna piece 



A half anna 



A pice 



Two Indian postage stamps 



For hquids, a common sherry glass is usually about two ounces, 

 and a tumbler holds about ten ounces or half a pint. 



45 grains. 



23 grains (nearly). 

 200 grains. 

 100 grains. „ 



one grain. 



