11'4 TETERTNARY MATERIA MEDICA. 



cough, and other affections of the respirator}^ appa- 

 ratus. In hepatic congestion, jaundice, etc., with 

 calomel and aloes. As an emetic to relieve the stom- 

 ach in acute indigestion of the dog ; in small doses to 

 relieve vomiting due to nervous excitement. 



CATHARTICS. 



Cathartics are divided into laxatives, and simple, 

 saline, drastic, hydragogue, and cholagogue purga- 

 tives. 



Laxatives. 



Sulphur Lotiun, Sulphur Prcecipitatum. See 

 under Sulphur. 



Magnesii Carhonas. See under Magnesium. 



Oleum Ricini, castor oil, the fixed oil expressed 

 from the seeds of Ricinus communis. The seeds con- 

 tain about fifty per cent, of the oil, which is obtained 

 by expression, without the aid of heat. The oil is 

 purified by rest, is sometimes filtered, and even 

 bleached. It is a mild laxative; becomes partly 

 emulsified, and this part of it is absorbed ; but the 

 greater part passes on through the intestines, stimu- 

 lating secretion and peristalsis without griping, and 

 frequently may be detected in the faeces. It is given 

 in diarrhoea and dysentery, and constipation during 

 pregnancy, etc. Dose: H., 3 fl.xij.-xvi. ; D., fl. 

 !ss.-ij. 



Fruits, roots, green food, bran mashes, etc., also 

 act as laxatives. 



