Dr. Thomas Andreics : The Great Chemist 



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portions. The glass tubes were mounted in an ingenious way. 

 An enlarged conical portion was formed near the junction of the 

 two diameters, the lower ends of the tubes being comparatively- 

 large in diameter while the upper portions were of capillary 

 dimensions. The lower mouth of the metallic flange was cone 



Fig. I. — Apparatus arranged for compression of CO2. 



shaped, fitting pretty well the cone on the glass tube. About the 

 conical part of the glass tube and a short distance below it was 

 wrapped a fine thread coated with shoemaker's wax. When the 

 joint was to be made the metallic portion was warmed and the 

 glass tubes pressed firndy into place and held until cool. This 

 joint stood quite perfectly and gave no trouble. 



