[ 46 ] 

 of time to fcparate more mild earth with the lime-water, 

 and more extracted matter. 1 .imc- water as precipitating 

 the extracted mancr appear* an equally improper and 

 di&greeabk nicnltnmm. Water baa been found to fat 

 (•end (he rcfin by mean) of much left gum than lias been 

 fappnftd RecVSed fpirit of wine extract a bitterncfi, 

 ringency, from ■ icliduum of twenty afiu- 

 fions of told water ; and water extracts altringcncy, 

 but no bittcrnefs, from the refidum of a* many arlii- 

 fiom of rectified fpirit. The rcfidua of both arc in- 

 lipi.l'" 



From many ingenfam experiments made on the Peru- 

 vian Bark by Or- It vim-, pubJifhcd ma Wir«i«ion which 

 gained the prize-medal given by the iiarvcian Socktyof 

 Edinburgh in 1783, the power of different menitrua upon 

 Penman Bark is afecrtained with greater accuracy than 

 !iad before been done : and it appears, that, whhrdpeA 

 to comparative power, the following fluids acl in thcor- 

 der in which they are placed : Dulcified fpirit of vitriol : 

 Grata he : Pr mh brandy : Rlienifh wine : Soft water : 

 Vinegar and water: Dulcified fpirit of nitre: Mild vola- 

 tile alkali: Rectified fpirit of wine: Mild vegetable al- 

 kali : lime-water. The emtteptfc powers of vinegar 

 and Bark united are double their fan) taken fcparatcly. 

 'I he aftringent power of the Bark is iiicrvafed by acid of 

 viirio] ; the bitter talk is deftroyed by it. 



1 H UmUlt^f.ijM, 



