PILOCARPUS. 



POTASSIUM AND SODIUM. 



41 



layer of benzene. Next add 3 drops 0.3% solution KoCr 2 O7. Shake mixture gently. 



The benzene layer becomes a color, while the aqueous layer remains 



yellow. 



Pilocarpine has been recommended as a powerful sudorific in grave emergencies 

 like uraemias and renal dropsy. Dose, 0.005 Gm. hypodermically. On the eye it has a 

 myotic effect similar to that of physostigmine. 



PODOPHYLLUM. 



Mandrake consists of the dried rhizome and roots of Podophylhim peltatum (Fam. 

 Berbcridacea), a perennial herb growing wild in shady thickets and woods in the 

 United States and Canada. It should yield not less than 3% of resin. 



From the powdered drug are made the Fluidextract, and the Resin (which is an 

 aqueous precipitate from strong alcoholic extracts). 



Properties: 

 Podophyllum : 



Appearance 



Color .. 



Odor 

 Taste 



Resin. Podoph. : 



Appearance 



Color .. 



Odor 

 Taste 



Resina Podophylli is a laxative and purgative of much value when used with dis- 

 crimination. Dose, 0.005 to o.oi Gm. 



POTASSIUM AND SODIUM. 



The salts of these two metals may be studied together, inasmuch as their respec- 

 tive actions are closely similar, the K ion being probably the more irritant of the two. 

 Where the same salts of both metals are official, the sodium salt is usually to be pre- 

 ferre/1 Many of the official salts are either superfluous or are of commercial interest 

 solely. 



Properties: 



