1 68 MATERIA MEDICA AND THERAPEUTICS. 



smell and taste ; alkaline ; miscible with, water. Propylamin 

 is another name for impure trimethylamin. 

 Dose. 20 to 60 min. 



ACTION AND USES. 



Externally, trimethylamin is a local irritant. Internally, 

 it lowers the frequency of the heart, the blood-pressure, and 

 the temperature. It was for a time believed to be specially 

 valuable in acute rheumatism, but is now very seldom used. 



ACIDUM CARBOLICUM. CARBOLIC ACID, 



PHENIC ACID, PHENOL, PHENYLIC ALCOHOL. 



C 6 H 5 HO. 



An acid obtained from coal-tar oil by fractional 

 distillation and purification. 



Characters. Colourless, acicular crystals ; hygroscopic ; 

 with a tarry odour and burning taste. Becomes and remains 

 fluid on addition of 6 per cent, of water. Solubility, 1 in 15 

 of water, 1 in If olive oil, 3| in 1 of glycerine. It does not 

 redden blue litmus paper. 



Dose. 1 to 3 gr. 



Preparations. 



1. Glvcerinum Acidi Carbolic!. 1 to 4. 



2. Suppositoria Acidi Carbolic! cum Sapone. 1 gr. 



in each. 



Sodse Sulphocarbolas. Sulphocarbolate of Soda. NaC 5 

 H 6 S0 4 H 2 0. (Not Officinal.} 



Source. Sulphocarbolic acid is formed by direct union of 

 Carbolic and Sulphuric Acids. The Sulphocarbolate of Soda 

 by neutralising Sulphocarbolic acid with Carbonate of Soda. 



Characters. Whitish odourless lumps of minute colourless 

 rhombic prisms. Soluble in water. 



Dose. 20 to 60 gr. 



ACTION AND USES. 

 1. IMMEDIATE LOCAL ACTION AND USES. 



Externally. The principal action and uses of carbolic acid 

 in disease depend upon its influence on fermentation and de- 

 composition, which are intimately associated with many patho- 

 logical processes. When this influence is studied apart from 



