fllE ARMY UOHSE. 53 



rREscuir'noNS. 



In writing prescriptions ronian numerals are used instead of 

 arahie (ordinary figures) and the numerals follow the symbols. 

 thus: 3 vii for T drams; f Z xii for 12 fluid drams, etc. 



FIELD EXPEDIENTS. 



In garrison, doses must be accurately measured by scales or 

 graduates, according to the tables of dry or liquid measure, but 

 in the field the following rough expedients may be used: 



Dry Dieasiire. 



1 ounce of lead acetate. 



. ^ , 3 ounce of zinc snlpliate. 



An Ordnance spoon i 



(Heapino-full.) ^ drams of a powder. 



I 1 ounce of a salt. 



Ordnance tin cup J of a qiiart. 



Full day's ration of niediiun- weight oats... 14 cups. 



Liquid measure. 



A drop ,.. 1 minim. 



A teaspoonf ul 1 fluid dram. 



A tablespoonful J fluid ounce. 



Tin cup 28 ounces = -J of a quart. 



