102 PRESCRIPTION WRITING 



We may now write our prescription as follows : 



Quininse sulphatis 3 v. 3i. 



Acidi sulphurici diluti Q. S. 



Spiritus setheris nitrosi ad Oi. 



Misce. 



(Furnish 3 i. bottle for measure). 

 Signa. Small bottleful three times daily in half a pint of water. 



John Smith. 

 Abbreviated : 



Quin. sulph 3v. 3i. 



Acid, sulphurici dil Q. S. 



Spts. aether, nitrosi ad Oi. 



M. 



S. (as above). 



We will write a prescription for a mixture containing 

 12 doses of chloral and potassium bromide for a dog. The 

 quantity of the mixture given at each dose will be a tea- 

 spoonful. Now, there are six teaspoonfuls in one ounce. 

 We will order a 2-ounce bottle, which will, therefore, hold 

 12 doses of a teaspoouful each. The dose of chloral is gr.v. 

 5 X 12 = gr.60, or 3i. The dose of potassium bromide is 

 gr.x. 10 X 12 = gr.l20, or 3 ii. Then we will order enough 

 water to fill the bottle. The Latin for chloral is chloral, 

 genitive chloral-iSj of chloral ; Latin for potassium bromide 

 is potassium, genitive potassui, of potassium ; bromidum, 

 genitive hromid-i, of bromide ; Latin for water is aqzux, 

 genitive aqu-ce, of water. 



9 



Chloralis 3 i. 



Potassi bromidi , 3 ii. 



Aquae ad 5 ii* 



M. "^ 

 Signa. Teas, in 1 tablespoonf ul of water every 3 hours. 



John Smith. 



A drench is a mixture which is given the horse in one 

 dose. We will write a prescription for a horse, containing 

 ether, chloroform and laudanum, to be administered as a 

 drench. The Latin for ether is cether, genitive cether-is, of ether; 



