XIV AUTHORITIES CONSULTED. 



Engineer. 



Engineering. 



Engineering and Mining Journal. 



Engineering Mechanics. 



Engineering News. 



Groves and Thorpe, Chemical Technology, Vol. I. 



Gliickauf. 



Ice and Refrigeration. 



Iron Age. 



Isherwood, B. M., Engineering Precedents. 



" " Researches in Steam Engineering. 



Jahrbuch der K. K. Berg-Akademie. 



" fur Geologic. 



Johnson, W. B., Report to Congress, U. S. A., 1844. 

 Journal American Chemical Society. 



" Canadian Mining Institute. 



" Chemical Society. 



" Franklin Institute. 



" Society of Chemical Industry. 



" Imperial Institute. 



" Iron and Steel Institute. 



" de 1'Eclairage au Gaz. 



" des Usines a Gaz. 



" du Gaz et de 1'Electricite. 



" fiir Gasbeleuchtung. 



" fiir Praktische Chemie. 



" fiir Angewandte Chemie. 



" of Gas Lighting. 

 Kent, William, Pocket-book. 

 Le Genie Civil. 



Memoires de la Societe des Ingenieurs Civils. 

 Mineral Industry, Vol. I. 



Mineral Resources, U. S. A., various volumes. 

 Mining Journal. 



Morin and Tresca, Machines a Vapeur. 

 Oesterreichische Zeitschrift fiir Berg- und Hiittenwesen. 

 Peclet, Traite de la Chaleur. 

 Percy's Metallurgy, Fuels. 

 Philosophical Magazine. 

 Poly tech nisches Centralblatt. 

 Progressive Age. 



Proceedings : Alabama Industrial and Scientific Society. 

 " American Gaslight Association. 



