The evaporation of a liquid at the ordinary temper- 

 ature of the atmosphere. 



What is vermillion? Composed principally of 

 red sulphide of mercury. 



What is the analytical test for Boric Acid? Alco- 

 hol flame turns green and turmeric paper brown. 



For what purposes are Barium Salts used? The 

 solution of nitrate and chloride are used as test so- 

 lutions. 



What is meant by (the subscription) to a prescrip- 

 tion? The directions to the compounder. 



What Acid do Senna Leaves contain? Acidum 

 Catharticum. 



What is the difference between a Sediment and a 

 Precipitate?. Sediment is solid matter separated 

 merely by the action of gravity from a liquid in 

 which it has been suspended, A Precipitate, on the 

 other hand, is solid matter separated from a solution 

 by heat, light or chemical action. 



What is the meaning of "Amarae" and "Dulcis"? 

 Bitter ariH Sweet. 



What is the action of sulphuric, nitric, and hy- 

 drochloric acids on organic substancs? Destroys 

 them. 



What two acids are found in Opium combined 

 with the Alkaloids? Meconic and Lactic Acids. 



How many Alkaloids does Opium contain? Nine- 

 teen, of which the most important is Morphine. 



What is the difference between Prepared and Pre- 

 cipitated Chalk? Prepared chalk is merely chalk 

 freed from most of its impurities, and generally 

 moulded into conical-shaped lumps. Precipitated 

 Chalk is made by precipitating a solution of Chloride 

 of Calcium with a solution of Carbonate of Soda. 



What percent, of officinal Sulphuric Acid in Aro- 

 matic Sulphuric? 20 per cent. 



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