But to proceed where I digrefled 5 What I have aflerted 
is confirmed by the great variety, which ismoft vifible in 
Fot-ajbes : Som^bcmg highly Alcalizate arc fiery hot; o- 
thers, cold , watry, nitrous to the palate, and no lefs 
weak in EfFefts then Taft, whereof Soap -boy lers, Dyers, 
and other Mechanicks are very fenfible. All which pro- 
ceeds from the Woods, being, when they are burnt, green 
or dry 5 from their abounding with Oily, Aqueous, or 
Acetous parts ; as alfofrom the feveral degrees of heat im- 
ployed in their produftion. Thofe who make Glafs, and 
efpecially the finer forts thereof, complain, that they can- 
not with the fame quantities and proportions of Ingredi- 
ents alwayes produce the fame fore of Glafs : Which they, 
not without reafon, afcribe to the Differences in their Afli- 
es. This muft neceflarily often happen according to the 
lately mentioned Hypothefis. 
The remainder of this Difcourfe, affirming the like of 
Volatile Salts and Vinous Spirits, with what hath been faid of 
AlcalifauSdltSy we refer to the next Month ; the room left 
in this Trad being to be employ 'd, as is ufual , in giving 
an Account of fome Books. 
Am 
