106 



C0NTBTBDTI0N8 TO THE KNOWLEDGE 



The results yielded by this cannel are very different from 

 those obtained with the same material at the Western Gas 

 Worlcs, London. Mr. "Wright, the eminent engineer to the 

 Western Gas Company, has lately made a series of experi- 

 ments, conducted with great care and accuracy, upon the gas 

 there produced, and states that a flame consuming 3 feet per 

 hour produced light equal to from 16.6 to 20 candles ; and 

 this statement is perfectly corroborated by my own analysis 

 of a specimen of the Western Company's gas collected June 

 15th, 1851, and given below. As I have not had an oppor- 

 tunity of repeating the practical examination, I can only 

 reconcile these discordant results by supposing either that 

 the specimen of Newcastle cannel sent me for investi- 

 gation was of inferior quality, or that some unknown 

 disturbing cause interfered with my experiments upon it. 

 I should anticipate that at least 29,000 cubic feet of gas per 

 ton, with an illuminating power equal to 20 candles for a 

 consumption of 5 feet per hour, could be obtained from this 

 cannel by the application of water gas, if of the same 

 quality as that used at the Western Gas Company's works, 

 Faddington. 



WIGAN CANNEL, (BALCARRES.) 



I.— WITHOUT WATER GAS. 



Cannel used 112 lbs. 



Qas produced 522 cubic feet. 



Coke left 68^ lbs. 



Time occupied 3h. 25m. 



ILLUMINATING POWER OF GAS. 



