C '^isi ]; 
C^mmoiirfized candle. T hefe Blow-pipes are eom^- 
monly niade of brafs or filver. 
SECT. Xt 
The whole Pocket-Laboratory is reprefentecl 
Tab, II. fig. I, with the cafe, exadly of the form,: 
bignefs, and proportions as that I make ufe of 
myfelf: What alterations there may be wanted' 
are eafily fotind out by pra^Siice. 
ch are the two parts of. which the Blow-pipe 
confifts, and which are already defcribed. 
a. a wax-candle, deiiined to be made ufe of, 
particularly in travels, when no other candle is to 
be had. 
a pair of nippers, (Korntong) to handle fo 
much the eafier the things which are to be tried,, 
becaufe they are generally fmail particles: This 
ferves alfo to touch and turn the fubjedls during 
the experiments, when they are hot, and could 
not be well handled with the fingers. 
d. e. /. are three phials, to put the required 
fluxes in, viz. Borax, the Mineral Alcali (Sat 
Sod^e), and fal fnfi bile micro cofmicum, 
g, a hammer, to break any part of a ftone,. 
when it is to be tried : This ferves alfo to pound 
things with. 
A magnifying glafs, necefiary when the ob- 
|e 61 :s are too fm all to be ieen by the naked eye. 
k. a fteel, to ilrike fire, by v/hich the hardne& 
©r foftnefs of the bodies is tried. 
/. a loadilone, to difcover the prefence of iron. 
m, a file, wherewith to diilinguifli natural gems,- 
quartz-crifcals, and artificial or coloured glafieS' 
from one another. 
n. a thin fqiiare plate made of up tempered fteely 
filed fiat ©n one fide, to pound things upon, and 
polifned 
) 
