126 4n ANALYSIS, &c. 
warmed paper, and repeat this, until the paper is prepared as 
above direéted. The prominent part of the wick of the can- 
dle, which is thus melted, becomes a fort of pencil, which holds 
the melted tallow or wax, and facilitates the application of it, 
and the wick of a tallow candle, on account of its being thicker, 
is fitter for this purpofe than the wick of a wax one. 
Tue laft remark on thefe experiments I fhall now make is, 
that, in the trials with the folution of barytes, the barytes vi- 
triolica was formed in particles fo very minute, that they did” 
not all remain at firft upon the filtre. Some of them pafled 
through it, and made the filtrated liquor a little muddy; but 
by making this muddy liquor pafs through the filtre a fecond 
time, it was made quite clear, the whole of the fediment being 
thus collected on the filtre. 
