(49o) 
Vitriol, or Fragments of any brittle Body, viz. by a little Glafs 
Bucket or Voil ftopt, which may receive thefe Bodies, adding (b 
much Water as will fill the Spatiola of the Fragments, up to the 
brim of the Glafs; for which allowance muft be made in the 
computation of the weight, both in the Avt and Water. 
Sublimate which wants its due proportion of 5 will be this way 
difcover'd, and Roman Vitriol mixed with Alum. It is here ob- 
ferv'd that 9 is to water almoftas 14 to 1. But the more eafie 
and fimple Method of weighing Bodies diflbluble in Water, is 
to ufe the thinner Oils, fiich as Oil of Turpentine of the firft rife 
in diftilktion. 
Having hitherto examin'd Bodies by Water and Oils, our Au- 
thor proceeds to examine the weight of Liquors by weighing So- 
lids in them. For if a heavy Body in Water lofe fo much of its 
weight as the quantity of Water weighs that is of an equal bulk 
to the Body, the proportion of the weight of all Liquors will be 
eafily obtained. For inftance, A piece of Amber of between ; 
and 4 Drams weighed in Water 6 £ gr.in Red French Wine 8 r gr. 
in iBrandy 17 J gr. in rectified Spirit of Wine 54 i gr. This way 
may be apply 'd to compare all forts of Liquors, as Wine in the 
Muft, Mature, decaying, vappid. Juices of Herbs, Beer, Sider, 
&c But Acids, are heavier than Water. Hence the Degrees of 
their Acidity may be obferv'd. Of Waters, Rain Water feems 
the lighted, and fcarce a 1 oooth part difference difcover'd in 
any of them. This is particularly apply'd to the famed Water 
of Ganges, tho Travellers affertan extraordinary lightnefs in it. 
In the laft place the Bulk of (olid Bodies may be found out by 
this Method. For fince a Cubical inch of Water weighs 256 gr. 
and as much of Oil of Turpentine 211 gr. if a Body of any mag- 
nitude and irregular fhape lofe fo much or more times that 
weight in Water or Oil, it is of a Magnitude equal to one or 
more Cubical Inches. 
In the fiibjoyn d Tra&,our Author treats particularly of Mine- 
rals,and obferves that Emery is as 4 to 1 to Water. lighter then 
Cry ft at ; fo is Foffil Amber ^Sulphur Vive,EngliJh m& Venetiau Talk.ln 
an American Talk heavier than Cryftal t sL Metalline Subftance was 
obferv'd. Fme Gold is as 19 to 1 to Water. Hence any Fallacious 
Mixture us'd by the Negroes in Gold-Sand may be obferv'd. Brafs 
is not quite half fo heavy as Gold, &c The whole Book is made 
up of curious Remarks and Experiments, fucb as ufually proceed from 
its renowned Author, whofe Jingle Name is more than fujftctent to re- 
commend it to the perufual of the Studious Naturalift. 
F I N I S. 
