[ '43 ] 



In the colder climates, fuch as Canada, where 

 Dutch (loves are ufed five months in the year, the 

 fame fire would lerve for evaporation j fo that when 

 the procefs, which is not difficult, becomes gene- 

 rally known, the country people might colledl bark 

 in the feafon i and during winter, when they have 

 little to do, extradb its efTence. But were it car- 

 ried on in a manufactory, the heat might be fo fru- 

 gally applied as to occafion little expence; for the 

 evaporating VefTels might be fo con(lru6ted and 

 placed, as for the fteam to empty jtfclf into the 

 fteeping tub, and there condenfe itfelf into hot wa- 

 ter. This would fave both time and expence. 



The univerfal ufe of leather, and the great fcarcity 

 of oak bark, make thefe confiderations of great 

 importance to the publick; and it were much to 

 be wifhed, that feir trials were made, both of ex- 

 tra(5ling the elTence, and tanning leather with it 

 when extradtedj with an accurate regiiler of the 

 expence attending each procefs. 



I am. Gentlemen, &c. 



^^ 



Articli 



