OPIUM. 621 



Mercuru, Chloride of {Calomel), 



is useful as an application for thrush; and to increase the pur- 

 gative effect of aloes, for which object 60 grains of calomel may 

 be given. 



Mercurij, Perchloride of {Corrosive Sublimate). 

 See jj. 68. It is a deadly poison. 



Nitrate of Mercury Ointment {Citrine Ointment). 



The strong ointment, diluted with three or four times its weight 

 of lard, vaseline, or lanoline, is a very useful application in cases 

 of cracked heels and other inflammations of the skin. 



Morphine {Morphia). 



is one of the active piinciples of opium, which it resembles in its 

 effects. A solution of from 3 up to 10 grains in extreme cases, 

 may be injected subcutaneously. 



Hydrochloride of morphine, sulphate of morphine, and acetate of 

 morphine produce about seven times the effect of an equal weight 

 of opium. 



Nitrate of Potash {Nitre). 

 See " Potash, Nitrate of." 



Nitre, Sweet Spirits of, 



is a very useful medicine. It acts on the kidneys and skin, and 

 is a good stimulant. Dose, 1 tO' 2 oz. ', to be given in a pint of 

 cold water. 



Nux Vomica. 



See " Strvchnine." 



Opium 



in moderate doses, is a stimulant to the brain and spinal cord. 

 In men and in dogs, opium is a soother of pain and a producer of 

 sleep ; but in horses, it is a general stimulant and a disturber of 

 the functions of the brain, which action is particularly well marked, 

 by the disordered movements of an affected horse. It checks the 

 worm-like motion of the bowels ; hence its use in cases of injury 



