Class II. i. 5. u. OF SENSATION. 23$ 



M. M. Cover the eruption daily with ink. With white merr 

 curial ointment, as ciefcribed above in herpes. With folution of 

 white vitriol ten grains to an ounce. Thefe metallic calces ftim- 

 uhtte the abforbents into ilronger action, whence the fluid has 

 its feline part reabsorbed, and that before it has accefs to the air, 

 which probably adds to its acrimony by oxygenating it and thus 

 producing a new acid. 



11. Tinea. Scald head. This contagious eruption affecls 

 the roots of the hair, and is generally moil virulent round the 

 edges of the hair on the back -part of the head ; as the corona 

 veneris appears mod on the edges of the hair on the fore part of 

 the head : for in thefe parts the eruption about the roots of the 

 hair is moil expofed to the external air, by which its acrimony 

 or noxious quality is increafed. 



The abforption of the matter thus oxygenated f wells the lymph- 

 atics of the neck by its flimulus, occasioning many little hard 

 lumps beneath the feat of the eruption ; when this happens, the 

 iooner it is cured the better, left the larger lymphatics of the 

 iieck fnould become affected. 



M. M. The art of curing thefe eruptions confifls, flrft, in 

 abating the inflammation, and confequent fecretion of a noxious 

 material. Secondly, in preventing its accefs to the air, which fo 

 much increafes its acrimony. And thirdly, in promoting the ab- 

 sorption of it, before it has been expofed to the air. For thefe 

 purpofes venefection once, and gentle cathartics, which promote 

 abforption by emptying the blood-veflels. Next poultices and 

 fomentations, with warm water, abate inflammation by diluting 

 the faline acrimony of the fecreted fluid, and abating the painful 

 fenfation. Afterwards cerate joined with fome metallic calx, as 

 of zinc or lead, or folution of lead, mercury, or copper, or iron, 

 which may itimulate the abforbent fyftem into (tronger action. 



Cover the fhaved head with tar and fuet, and a bladder ; this, 

 by keeping the air from the fecreted fluid, much contributes to 

 its mildnefs, and the flimulus of the tar increafes its abforption. 

 See the three preceding fpecies of this genus. 



Mr. Morifon of Dublin cures the tinea capitis by what he terms 

 an adhefive pafte, which is made by boiling half a pound of fine 

 flour in two pounds of common ale, and then adding four ounces 

 of yellow refin in fine powder, and (lining them well together, 

 until they are perfectly incorporated* After removing the hair, 

 and poulticing the head for a day or two, to take off the hard 

 fcabs, this paite is fpread on flips of linen, which are applied 

 over the whole affected part, and removed and frefh ones appli- 

 ed every morning, — after one or two days, I fufpect, that rc- 

 inoving the plaftcrs feldomer might be more advantageous. 



12. Cri/jl* 



