AN AMATEUR'S BOILER FOR GREENHOUSE HEATING. loo … inches on each side at of sal ammoniac on which to rub the iron to "tin" it. right angles, join the right hand extremity of the top You will find this of great use, for when the iron is line to the right hand extremity of the lower line, and burned, and even red hot, a rub on the sal ammoniac the…
Industrial arts · Handicraft
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
