CURLEY, THOS EARNSHAW, E. H. EGNER, FREDERIC. SPEAKER. 234 Tar and Water from Water-Gas....... 229 What Records have we of Gas Holders having been Struck by Lightning, and What has been the Result? Is it Safe to Use Incandescent Electric Lights in a Purifying House, the Switchboard being outside of the Building, and the Wiring in Iron Pipes? . 268, 269 The Fuel Value of Residuals.......286, 287 To What Temperature is it Economical to Heat Oils before they are Sprayed on the Checkerbrick? What are the most Economical Means of Obtaining this Temperature?........ Further Notes on Retort House Practice ... ........... 311 ..253, 254, 255 |