■■ ( i86 ) 
it will weigh juft as tnuGh as a Portee of no Aunet 
of Lyons, which is the general Rule for Calculating, 
when they draw the Silk out : By this means one 
may learn to adjuft the weight. There are Silks of 
Viedmont which are very light and clean, and to be 
preferred before any, ia Sale ; The Vortee of SjJk of 
the lighteft, weighs near twenty four Penny -weight 
to twenty five and twenty fix Penny -weights the 
Ported', others twenty (eve^n and twenty eight, ^-u hich 
Weight may be dilpenltd u uh, on condition the other 
Qualities be as good , \o wit, \^eil v^rought, Even, 
Fine, and Clean : Sue above theft Weights they cannot 
be, unlefs they abate of their Profit, proportionable to 
what they want in ligbtnefs. 
V. Two PTOpofTtions defir'd to be Anfwered 
in a Year and h^lfj by any Perfon ; if they 
are not in that t?mer the Propafer promifesr 
he will do ii himfelf. 
QVum a praparatidHihus ac foluHonihus Chymkii , 
varicu^ fecanda corpora^ fuleant mutationes ; dt 
^viis ireviorihuSy fimpliciorthuSy ac magts Katura* 
lihus foUkitus indagant homines ; pmter alias 
invinitur quod 
M^ato nafcentt Fegetatili quMet a nafcendi mdc^ 
ejufdm coha^nndi nifus^ feu partium ejufdem mo'^ 
iilitas ac immhititas^ dajminari piffunf. 
Qu4 
