ADRENALIN 681 



thickened, or indurated, the sebaceous and sudoriparous 

 glands being impaired, the application of bland oil, lard, or 

 vaseline usefully replaces the deficient natural oil, and 

 protects abraded surfaces from the action of air or of acrid 

 discharges. Most animal and vegetable fats, freely used, 

 and remaining long in contact with the warm skin, oxidise 

 and become rancid and irritating. Such results are retarded 

 by addition of a little benzoin, and are obviated by the 

 substitution of the mineral vaseline. Lard is occasionally 

 employed as a dressing in mange and scab, but is ineffectual 

 in destroying the acari. 



Adeps Lanse or wool-fat, the purified cholesterin-fat of 

 sheep's wool ; and Adeps Lanae Hydrosus, hydrous wool- 

 fat or ' Lanoline,' promote the absorption of remedies 

 applied to the skin. The official hydrous wool-fat is pre- 

 pared by melting seven ounces of wool-fat and adding three 

 ounces of distilled water. It is stable, unirritating, not 

 rancid, and accordingly makes a good protecting lubricant. 

 It mixes readily with other fats and oils, with starch, 

 bismuth, zinc oxide, creolin, iodine, salicylic acid and many 

 other antiseptics, and more water may be added without 

 affecting its use as a basis for ointments and liniments. 

 For stock ointments a good combination consists of sixty- 

 five parts hydrous wool-fat, thirty of liquid paraffin, and 

 five of ceresin (hard white paraffin). Adeps Induratus, or 

 lard deprived of a portion of its oil by pressure, is employed 

 as a substitute for ordinary lard in hot climates (B.P.). 



ADRENALIN 



ADRENALIN (C 9 H 13 N0 3 ) is the active principle discovered 

 by Takamine in the medulla of the suprarenal gland. 

 SUPRARENIN, a synthetic preparation having similar 

 properties to the animal product is also employed in 

 medicine. 



Adrenalin occurs as a white crystalline powder, with a 

 faintly bitter taste ; insoluble in alcohol and ether ; slightly 

 soluble in cold water, more soluble in hot water, and readily 

 dissolved by dilute acids. It is very stable in the dry state, 



