id author title date pages extension mime words sentences flesch summary cache txt 30066 Frary, Francis C. (Francis Cowles) Laboratory Manual of Glass-Blowing .txt text/plain 17948 791 76 of glass is also very useful in breaking off very short ends of tubes, necessary to follow rotating and heating a tube by blowing it, the hands to be heated and an extra supply of glass for the little side tube which a cone, or else heat so much of the large tube that part of its glass is the bulb, and the tube well rotated as the glass softens at that point. proper tail, and use the glass in the large tube for the bulb instead of off the tail as in the making of the bulb on the end of the tube, blow the open end of the large tube, and the bulb softened with a suitable collecting glass as for a bulb on the ends of two tubes (Exercise No. 6), and drawing to form cones of suitable shape (_a_ and _b_, Fig. 17) ./cache/30066.txt ./txt/30066.txt