( lio ) 
IL EplJloUad T). Joelem Langelottum 
- DE ALCALI ET ACIDI 
J N SU FF IG I EHTlhproprin^ 
^ ciptorum corporum ^^turalium tmnere 
gerendo y confcripta ^ Johanne Bohn 
^hiL ac Med. T)oB. in zJcad. Lips. 
npHe ingenious Jfuthor t\ii% Epifile^ in purfuit of his 
defign, do's. 
1. Complain of theobfcure, ^vidiim^^xkSiDefinitionsy 
whi ch are given of the two great Duellijis of Nature^ AU 
call and Acidum, by the favourers of this Hypothe/is > if 
every things which ferments with anacid^be an Alcalh how 
comes it to pafs, that Spirit of Salt» or Spirit of Vitriol 
caufes a fermentation, and precipitation, when mingled 
with a folution oiLum> oxVenus^ made with Aquchfortis^ 
or Spirit of Nitre ? and, if whatlbever coagulates with an 
Alcali^ be an acid^ whence is it, that Liquor Nitrifixi^ 
or ol. Tartariperdely turns Milk and that iS/'^m coagu* 
ht€S with oL Tart, per deliquium. 
2. He aflerts> that thofe a£tions, which are imputed 
to A/cali and Acidum, do many times belong to fuch bo- 
dies, as partake of little, ornothing^ of thofe PnW^//?/^/ ; 
for inftance, he fayS:» that the erodingquality of Oils^^r 
Expreffionem^ does not arife from the acid of thoir oils> 
there being not (^ashefaysj fo much ^35^'^ in them, as can 
produce all thofe EjfeUs^ which are commonly laid to its 
charge. 3. He 
