THE IMPROVED ART OF FARRIERY. 53/ 



doses from half a drachm to two drachms so that the 

 OLfferent proportion between the horse and the man, 

 varies more in this medicine than in many others ; for 

 it appears that the horse can take forty times as much 

 emetic tartar as a man ; but in regard to aloes, twenty 

 times the quantity taken by a man, is quite sufficient 

 for a horse. 



VlTRIOLATED AnTIMONY. 



Take of powdered antimony four ounces ; calcine it 

 in a broad earthen vessel, with a fire gradually raised, 

 stirring with an iron rod, until it no longer emits a 

 sulphurous smoke. 



Put this powder into a crucible, so as to fill two 

 thirds of it. A cover being first fitted on, make a fire 

 under it, at first moderate, afterwards stronger, until 

 the matter be melted. Pour out the melted glass. 



Glass of Antimony. 



Strew antimony, beat it into a coarse powder, like 

 sand, upon a shallow unglazed earthen pan, and apply 

 a gentle heat underneath, that the antimony may be 

 heated slowly, keeping it at the same time continually 

 stirring to prevent it from running into lumps. White 

 vapours of a sulphurous smell will arise from it. If 

 they cease to exhale with the degree of heat first 

 applied, increase the fire a little, so that the vapours 

 may again rise ; go on in this manner till the powder, 

 *vhen brought to a red heat, exhales no more vapours. 

 Melt the calx in a crucible with an intense heat, till it 

 assumes the appearance of melted glass, then pour it 



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