186 CHAPTER 19. 



Dissolve the camphor in the spirits, and mix the whole together, so 

 as to form a liniment. 



380a. Soap Liniment. 



Soft Soap . . . 2 oz. Camphor . . . ^ oz. 



Proof Spirit . . 1 pint. Solution of Ammonia 5 oz. 



Dissolve the soap and camphor in the spirit, then add the solution of 

 ammonia, and filter for use. 



3806. Lead Liniment. 

 Solution of Sub-acetate of Lead, 1 part. Olive Oil, 4 parts ; mix well. 



381. Tincture cf Iodine. 

 Tincture of Iodine is sometimes employed as a mild stimulant to pro- 

 mote absorption of effused fluids, or to remove abnormal growths. It 

 should be painted on the part daily until soreness is produced. 

 Tincture of iodine is prepared as follows : 



Iodine ... 1 part. Rectified Spirits 8 parts. Mix. 

 The activity of tincture of iodine may be increased by the addition of 

 1 part of iodide of potassium. 



381a. Iodide of Potassium. 

 Ointment of Iodide of Potassium composed of one or two parts of lard 

 is a safe and mild stimulant. The mode of application is very similar to 

 that recommended infra for biniodide of mercury in reduced strength. 

 Its use may, if required, be continued for a length of time (see para- 

 gi-aph 384). 



382. Cantharides in reduced strength. 



Although Cantharides is ordinarily used as a vesicant, it is frequently 

 employed in reduced strength as a stimulant for the piirpose of rousing 

 the absorbents to increased action. 



The preparation is usually made as follows : 



Powdered Cantharides . 1 part. Olive Oil . 12 parts. 

 Digest in a Water bath for 3 hours and filter whilst hot. 



or Powdered Cantharides . 1 part. Dilute Acetic Acid . 12 parts. 

 For this purpose however biniodide of mercury is to be preferred. 



383. Mustard. 



Mustard is very rapid in its action as a stimulant. It should be 

 moistened by cold water, and then tepid water should be added until it 

 has the consistency of that used for the dinner table. On no account 

 whatever must hot water be used, as it destroys the vesicatory property 

 of mustard. 



