234 BULLETIN 41>, I'NlTED STATES NATIONAL MUSEUM. 



(7) Buckeye Caniiel Coal Company, Daviess County, Indiaua. (59990.) Compo- 

 sition : 



Per cent. 



Water :^. 



Volatile matter .51. 



Fixed carbon 40. 



Ash 6.0 



100.0 



The occurrence of two varieties of bituminous coal in one vein is 

 illustrated by a section of the Paint Creek Mine, Paint Creek, Kanawha 

 County, West Virginia. 



(1) Sandstone. (54233.) 



(2) Roof, gray slate. (54234.) 



(3) Roof, black slate. (54235.) 



The brown coals are represented by six specimens. 



(1) ^tna mine, Chesterfield County, Virginia. (59262.) Composition: 



Per cent. 



Volatile matter 28. 80 



Fixed carbon 66. 60 



Ash 4.60 



(4) Splint coal. (54236.) 



(5) Can nel coal. (54237.) 



(6) Bottom slate. (.54238.) 



Analyst, Clemson. 



100, 00 



(2) Deep River, Chatham County, North Carolina. (5G334.) Composition : 



Water 



Volatile matter 

 Fixed carbon. 



Asb 



Sulpbur 



Per cent. 



1.79 



29. 56 



58.30 



7.46 



2.89 



100. 00 



Per cent. 



1.95 



30.54 



58.47 



6.85 



2.19 



100. 00 



(3) Eastland County, Texas. (56551.) 



(4) Lignitie, showing traces of the original woody structure. Golden Colliery, 

 Golden, Jefferson County, Colorado. (4795.) 



(5) Lignite, showing distinctly the original woody structure. Lower Potomac 

 formation. From log imbedded in the bank of the Dutch Gap Canal, 20 miles below 

 Richmond, Virginia. (59978.) 



(6) Lignite, showing distinctly the original woody structure. Lower Potomac 

 formation. From near Dutch Gap Canal, Virginia. (59979.) 



PEAT. (TURF.) 



Closely connected with the coals and in fact forming the end of the 

 series stands i^eat. This is a bog or marsh formation of very recent 

 origin. It consists of the remains of sphagnous mosses which have the 

 property of dying at the roots as they grow upwards. .In this way 

 immense deposits have been formed. By the pressure of the moss and 

 by gradual changes the material is converted into a brownish black, im- 

 perfect coal, retaining many evidences of the original vegetation. It 



