[ 5^2 i 
pdliilied on the other fide, to hammer iiietak 
upon. 
Above this fteel plate n. and within the circle^ 
drawn round about it, is the place for a candle-^ 
flick. This candleftick is fhewn in plan, fig. 2 , 
and irt profile, fig. 3 , Tab. 11. It confifts of a 
round brafs plate ; the point a, and the ring h. 
round it, is inftead of the focket in another can- 
dleflick, which would here take up too tiiuch 
room. 
Fig. 4 , (Tab. 11.) is a thih iron rihg, a fixth part 
of an inch high ; within this ring the pounding and 
grinding of the things upon the fteel plate fig. i, n, 
is performed, that they may not be loft. lit 
packing up, this ring is to be put loofe upon 
the candleftick ^ and, as it is lower than the point 
of this, it does not take up much room in the 
cafe. 
The whole cafe, thus made, with all the inftm- 
ments in it, as I have defcribed them, is no more 
than one and an eighth part of an inch high, and 
confequently not more troublefome to be carried 
in the pocket than a fmall book 
* The Pocket Lahorafory here defcribed, and the Pox for the 
Acidsi mentioned in Sedl Ixii. have been improved after the 
manner of Mr. Cronftedt, by a gentleman particularly ac- 
quainted with Mr. Engeftrom, from whom he learned this 
method of making Mineralogical Experiments. The bulk of 
the firll has been reduced nine and a half cubic inches ; itsr 
length being dlminifhed fixteenth of an inch, the breadth 
f^e ditto, and the depth /wo; notwithhanding which, there 
is alfo added a piece of charcoal for trying the experiments, 
a flint, a piece of agaric tinder, and feme matches for light- 
ing the candle. The three phials d e f for the falts, are of d’ife- 
rent colours, to prevent any miftake. The candleliick r has diffe- 
rent concentric grooves for keeping the refults of the trials fe- 
parace. The blow-pipe c h has a fil ver mouth piece, and ferews 
in the middle of the ball, in order to clean out the moikure with 
the greater eafe ; and the fmall wire [Se^l. ix.} is mord 
conveniently detached than fixed round it. The other box 
