Society of Glass Technology · [Sheffield] · leaf 621
o a tapered point, b1,the bulb, a4, fitting snugly into the con-striction, b2. The tubes were then heatedat this point, and the bulb, a4, was burst,by blowing into> the tube, a, so that itformed an open cylinder, a5 (Fig. 121),which united with the walls of the tube,b, as shown. The open end of… … Fig. 118. Fig. 119.
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
