Book.5.
Of the Art of Diſtillation.
153
Another Lamp furnace.
There is another ſort of Lamp furnaces with three candles after this manner.
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The uſe of this is when you would have a conſtant fire that ſhould give a ſtronger heat then one candle in the former furnace. And the truth is that if your candles be big (as you may make them as big as you will) you may have as ſtrong a heat this way as by aſhes in an ordinary furnace.
To make a Candle that ſhall laſt long.
Take unflaked lime, powder it and mixe it with your tallow, and ſo make your candle of that, or elfe you may make candles of Caſtle-ſope which will ſerve for ſuch uſes as theſe, viz. to burne in ſuch a Lampe furnace.
Note that it is the ſalt that is in the lime, and ſope that preſerves the tallow from burning out ſo faſt as otherwiſe it would.
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