APPENDIX. 341 



Hiera Picra. 



pot, and stir the mixture constantly, until 

 it be burnt into a matter of a grey colour, 

 which is then to be removed from the fire, 

 ground into powder, and put into a coated 

 crucible. Lute to this crucible another in- 

 verted over it, perforated in the bottom with 

 a small hole, and apply the fire, which is 

 to be raised gradually to a white heat, ^nd 

 , kept in timt state for two hours. Lastly, 



. i'jkikiotid r , . , , , ; , J. 



grind the matter, when cold, into a very 

 ^^' ' fjne powder; and keep it in a bottle for 



This powder is supposed to be nearly the same 

 with that celebrated nostrum of Dr. James, Ijt 

 is excellent in inflammatory diseasies.. . Two 

 drachms may be given ]twp or three times a day, 

 in a pint of warm gruel. The utility of this me- 

 dicine is pointed out in different parts of this 

 work. 



HIERA PICRA. 



Take — Socotrine aloes, four ounces, in powder ; 



Virginian snakeroot, and ginger, of each half 



an ounce, in powder : 

 Mix them together, and keep them in a bottle 

 for use. 



