Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 174
d. It has been already shown that -with entire massive] wick-, a nucleus is formed inthe middle of the candle, which illumines but little, and smokes from want of air ; with the hollow wicka current of air is directed exactly to that spot, so that the flame is surrounded by two concentric cur-rents… … k
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
