136 GEOLOGY OF OHIO. 
In Trumbull, Mahoning, Summit, and Stark this coal is usually from 
12 to 18 inches in thickness, and is generally known as the “15-inch 
seam,” occasionally swelling to two or two and a half feet. 
In Holmes county it is a cannel, usually two to two and a half feet 
thick, but at the Strawbridge mine locally expanding to a thickness of 
six feet. In this particular locality it is a typical splint coal, having the 
aspect of a cannel, but containing a relatively small amount of volatile 
matter and a large percentage of fixed carbon. It is to be regretted that 
recent explorations indicate that the unusual expansion of this seam near 
Millersburg is quite local, as from its quality it would have proved a 
very useful coal if the quantity had been large. 
In the southern portion of the State two or more small coals lie near 
the horizon of Coal No. 2, but it is not probable that either should be 
considered identical with it. 
It should also be said that in Holmes county another seam, generally 
thin but sometimes workable, lies between Coals No. l and No. 2. This 
is called the “iron coal,” because of a bed of iron associated with it, but 
it is so local that I have not thought proper to enumerate it among our 
workable coals. On Michart’s farm, two miles north of Napoleon, Holmes 
county, this seam appears in greater force than any where else that it has 
come under my observation. There it is composed of two benches of one 
foot each, separated by iron ore, said by the owner—for it was not fully 
shown—to be three feet thick. Other parties represent it as one foot of 
ore in two of shale. 
It will be noticed by reference to the reports and sections published by 
Prof. Andrews, that a coal seam with whick iron ore is associated is 
sometimes found in Jackson county, holding nearly the same position to 
Coal No. 1 that this does. 
ANALYSES oF Coat No. 2. 
No.1. Millersburg, Holmes county, three miles south-west, Straw- 
ridge Canmelie en cel eeccieiescass benuaee ne Neue een ee eee eee tures Worm ley. 
No.2. Millersburg, Holmes county, three miles north-east........... Wormley. 
1. 2. 
Specie erawatys le GA Pattee Noe hehe acne nara neaess 1.320 1.293 
INLOISLUTE i asec 5 dcecrcumbelylonk ascabecaeee ecteeee wesen de Biauan este 2.15 1.30 
Wolatile combustibles crvecscsgscessesesesnceusecirissrdeces snes 28.65 41.66 
EVN CATON jivdavenctivccetscsaceactecetmeen ces ntaeeen ios seuescossee 52.70 41.20 
TANS Weer Nate cs esis aa e/acscis epsnice tanesee Co tee eeeniet eee uc casement . 16.50 15.90 
100. 100 
Sol phuey eee eee ae UO RRR Onn nS REE ne 2.13 1.55 
