common-fized candle. Thefe Blow-pipes arec&nt- 

 monly made of brafs or fiiver. 



SECT. XL 



The whoie Pocket-Laboratory 13 reprefentecl 

 Tab. II. fig. 1, with the cafe, exactly of the form* 

 bignefs, and proportions as that I make uie of 

 myfelf : What alterations there may be wanted 

 are eafily found out by practice. 



c h are the two parts of which the Blow-pipe 

 confifts, and which are already defenbed. 



a. a wax-candle, deftined to be made uie o£, 

 particularly in travels, when no other candle is t& 

 be had. 



b. a pair of nippers, (Kcrntong) to handle & 

 much the eafier the things which are to be tried, 

 becaufe they are generally fmail particles: This 

 ierves alfo to touch and turn the iubjects during 

 the experiments, when they are hot, and could 

 not be well handled with the fingers. 



d. e. f. are three phials, to put the required 

 Muxes in, viz. Borax, the Mineral Akali (Sal 

 Sod*), and fa I fujibile micrccofmicum. 



g. a hammer, to break any part of a (lone, 

 when it is to be tried : This ferves alfo to pound 

 things with. 



;. A magnifying glafs, necefTary whe^ th ob~- 

 jecls are too lmall to be iben by the naked eye. 



k. a fteel, to (kike fire, by which txhe hardneft 

 or foftnefs of the bodies is tried. 



/. a loadftone, to diicover the prefence of iron. 



?h. a rile, wherewith to diftinguifh natural gems, 

 quartz-criitals, and artificial or coloured glalTes 

 from one another. 



7i. a thin fquare plate made of untempered fteel, 

 nied £at on one fide* to pound things upon, and 



polifhed 



