mo 
372 Chemical Examination of Bituminous Coal. 
.ashes are of a kind and in such a state as to Offer no inconven- 
ience in using it asa fuel. The coke also is in excellent form 
for producing intense heat. 
‘To show more. particularly the resemblances of this coal, we 
cite below, a collection of the analyses of various coals, some 
dry and others fat coal, froma Report on the Manufacture of 
Iron, made to the Legislature of Maryland, by J. H. Alexander, 
Esq. 
Frost- 
burg. | Scot- Stafford-|N | New: | Staf- |Rive de|Cannel. 
Mary- | land. | shire. “| saaths [castle ay Gier. | Lanca- 
| land. Clyde. | Ti ipton, shire. 
sae * ee t+ 1 
Carbon, 66.3 | 64.4 | 67.5 | 60.5] 67.5) 62.4) 66.5 64.72 
143] 46| 25 | 4. | 25] 35] 2. 
Wy otek matt’r, 19.4 | 31. | 30. — 135.5} 30. | 34.1] 31.5 35.28) 31.6 
100. |100. |100. 100. |100. 1100. \100. |100. 
* Dry coals. - + Fat coals. 
The Newcastle coal, analyzed by Karsten, gave 68.5 per cent. 
of coke. The average of our Poca by the last series of ex- 
periments, is 68.2 per cent. of cok 
The following table will show the relations of the Mid Lothian 
~ coal in its amount of coke. 
Clyde, 69. Rive de Gier, 68.5 
Tipton, 70. Lancashire, 64.72 Cannel. 
Newcastle, 64.5 __ Mid Lothian, 64.33 aver. Ist series. 
nde 70. st 68.2 aver. 2d do. 
sf 68.5 i 65.9 general yee 
Staffordshire, 65.9 
The average of the three sas aeccataan upon the Rowatl coal, 
gives 67.6. . 
It appears that the Mid Lothian coal of Virginia, i is viceddemabalie 
the same as the best coals of both Europe and America, while it 
me eet identical with the Newcastle coal of England. 
proportion of excellent coke, is almost two thirds of the en- 
tire Petaett: of the volatile matter, which is about one third part, 
more than three fifths are combustible, and in a form to act very 
adv vantageously in producing a bright and hot blaze, while only 
one thirteenth part of incombustible, earthy and metallic matter 
remains in the form of f ashes. This proportion of incombustible 
matter is a positive for being a nduc it makes 
the’ fire hotter: by retaining ‘end: accumulating t the heat. Count 
