SUMMARY OF PAPER 



ON 



xitr ^Mm|3s/' 



Read ry WILLIAM THOMSON. 



before the Engineering Section, Feb. '2Srd, 1892. 



rriHE various forms of apparatus required for the 

 -*- pumping of corrosiTe liquids, chiefly sulphuric and 

 hydrochloric acids, were described and illustrated by dia- 

 grams. 



For sulphuric acid the materials used are glass, stoneware, 

 rubber, ebonite, lead, and iron ; while for hydrochloric acid, 

 glass, stoneware, rubber, gutta-percha, ebonite, wood, and 

 siliceous freestone are employed. 



When pumps are not available, the acid is raised manually 

 or mechanically in carboys. 



The following pumps were described and illustrated by 

 diagrams — the hand pump, the steam injector, the plunger 

 pump, Schlotter's pump, the diaphragm pump, the box 

 pump, the acid egg, and the automatic acid egg. 



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