THE ar:my tiorse. 53 



PRESCRIPTIONS. 



In wi'iting prescriptions ronum numerals are nsed instead of 

 arabie (ordinary fiirures) and the numerals follow the symbols, 

 thus: 3 vii for 7 drams; f : xii for 12 fluid drains, etc. 



FIELD EXPEDIENTS. 



In garrison, doses must be accurately measured by scales or 

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

 in the field the following roKf/h expedients may be used : 



Dry III ((is II re. 



1 ounce of lead acetate. 

 3 ounce of zinc sulphate. 



2 drams of a powder. 

 1 ounce of a salt. 



Ordnance tin cu]) I of a quart. 



Full day'.s ration of nieduim-\vei<>ht oats... 14 cups. 



Li<liii(I iiicdsiirc. 



A drop 1 minim. 



A teaspoonf ul 1 fluid dram. 



Atablespoonfid i fluid ounce. 



Tin cup 28 ounces = | of a quart. 



An Ordnance spoon. 

 (Heaping f nil.) 



