two series -of tube, so that the engraving To produce ornaments or inscriptions on stone, either in pipes, receiving in their interiors the steam from vacuum powder will fall upon it, and vessels. Each condens:r consists of 21 tubes, 13 feet long in a few minutes’ time the by 6 inches diameter.… … metal, secured to the The skill and time of the artist may be aevoted exclusively To manufacture the animal charcoal used in the filters, the herness, P, by straps, bones, after carbonization, are ground in a crushing mill of A, as shown. This any form, and made to pass a screen which separates the…
Internet Archive · Public domain (published before 1931). Free to use for anything.
