POTASSIUM AND SODIUM. 

 Incompatibilities (continued) : 



SACCHARUM LACTIS. 



43 



The other official K. and Na. salts, not possessed of an essential therapeutic utility, 

 or otherwise superfluous, are : K. Acetas, K. Bicarbonas, K. Bromidum, K. Carbonas, 

 K. Citras, K. Citras Effervescens, K. Hydroxidum, K. Hypophosphis, K. Nitras. Na. 

 Arsenas, Na. Arsenas Exsiccatus, Na. Cacodylas, Na. Carbonas Monohydratus, Na. 

 Cyanidum, Na. Glycerophosphas, Na. Hypophosphis, Na. Indigotindisulphonas, Na. 

 Perboras, Na. Phenolsulphonas, Na. Phosphas Exsiccatus, Na. Sulphas, Na. Sulphis 

 Exsiccatus, Na. Thiosulphas. 



RHEUM. 



Rhubarb consists of the rhizomes and roots of Rheum omcinale (Earn. Polygon- 

 acece) and other species of Rheum, coming from China and Thibet. 

 Properties of the powdered Rhubarb: 



Appearance 

 Color .. 



Odor 



Taste .. 



Color, when triturated with Na2COs 



Feeling between the teeth when chewed. 



Use microscope to ascertain cause 



Rhubarb is a useful laxative in the fermentative diarrheas of children. It has a 

 mild, constipating after-effect. 



The official preparations of Rhubarb are: the Extract, Fluidextract, Compound 

 Pill, Compound Powder, Syrup, Aromatic Syrup, Tincture, and Aromatic Tincture. 

 Of all these, the most desirable are the Aromatic Syrup (dose, 10 mils), and the Aro- 

 matic Tincture (dose, 2 mils). 



SACCHARUM LACTIS. 



Milk Sugar, or Lactose, is prepared from the whey of cow's milk. It should be 

 kept in tight containers as it readily absorbs various odors. 

 Properties: 



Appearance 



Color 



Odor 



Taste .. 



Feel on the tongue 

 Solubility : 



H 2 O 



C 2 H.,OH 



