The Methods of Glass Blowing and of Working Silica, by W. A.
   Shenstone�� 33941
   � [Full title: The Methods of Glass Blowing and of Working Silica in
   the
   ��������������� Oxy-Gas Flame]
   � [Subtitle: For the use of chemical and physical students]
   � [Link: [1]http://www.gutenberg.org/3/3/9/4/33941 ]
   � [Files: 33941.txt; 33941-8.txt; 33941-h.htm]
   Thanks to Harry Lam and the Online Distributed
   Proofreading Team at [2]http://www.pgdp.net (This file was
   produced from images generously made available by The
   Internet Archive/American Libraries.)
   Many thanks
   Janet

References

   1. http://www.gutenberg.org/3/3/9/4/33941
   2. http://www.pgdp.net/