No. 7. DEPAUTiMENT OF AGRICULTURE. 473 



cuut. and that of the volatile matter is about ten (10) per cent. Care- 

 ful firing in factories and mills and on locomotives reduce this waste, 

 but while we have cheap coal and the Legislature permits the care- 

 less firemen to load the atmosphere with particles of unburnt car- 

 bon, we cannot expect to have these wasteful methods abolished. The 

 beehive type of coke oven, so generally used in Pennsylvania, is one 

 of the most wasteful contrivances ever invented, and from these thou- 

 sands of ovens there have jjassed off into the air smoke and vapor 

 which had they been saved, the value of the products would run into 

 millions of dollars. Some day this waste may cease, but not, perhaps, 

 for many years to come. 



The ai)pended talde was prepared a number of years ago for private 

 use. It has been found to be of great value and will prove so, no 

 doubt, to siT-h of our farmers who live and own coal lands in West- 

 ern Pennsylvania. 



