INDEX. 



259 



Tar, yield from given weight of 



coal, 1 86. 

 Tar asphalt, 128. 



Store well or cistern, 129, 



219. 

 Separation of from water, 



129. 



Tenders, 243, 248. 

 Twaddel's hydrometer, 82, 83, 



193, 194- 



Unaccounted-for gas, 119. 

 Temperature of. 120. 



Valves, purifier, 224. 



Wall, cost of, 237. 

 Wareham, sulphate plant at, 133. 

 Washer, Livesey's, 220. 

 Water, tank for, 219. 

 Weighing machine, 78, 234. 

 Working manager, 66. 



Remuneration of, 68. 

 Working results, 162, 178. 



Memoranda and tables, 162, 

 179, 181. 



