id author title date pages extension mime words sentences flesch summary cache txt 32962 Bolas, Bernard D. A Handbook of Laboratory Glass-Blowing .txt text/plain 19242 913 72 When it is necessary to seal a substance inside a glass tube, the bottom it will be necessary to join in a piece of thick glass tubing, or to on a glass tube, bursting a hole by heating and blowing, and enlarging _Glass Spirals._--If a tube is heated by means of a long, flat-flame the sealed end of the syphon tube into a small, thick-walled bulb, and top of the capillary tube closed by the use of a small blowpipe flame. The ordinary soda-glass tubing melts easily in the blowpipe flame, it Lead-glass tubing is easy to work in the blowpipe flame, melts easily, other Fuels--Making Small Rods and Tubes from Glass other Fuels--Making Small Rods and Tubes from Glass finally, the tube of the other glass is joined on to the end of this. When this seal is completed, the end of the soda-glass tube is drawn off ./cache/32962.txt ./txt/32962.txt