PUBLICATIONS ON COAL, LIGNITE, AND PEAT. 295 
Vaughan, T. W. Reconnaissance in the Rio Grande coal field of Texas. Bul- 
letin No. 164. 100 pp. 1900. 
Weeks, J. D. The manufacture of coke. In Mineral Resources U. S. for 
1883-84, pp. 144-213. 1885. 
White, D. The bituminous coal field of Maryland. In Twenty-second Ann. 
Rept.. Pt. Ill, pp. 201-214. 1902. 
White, D., and Campbell, M. R. The bituminous coal field of Pennsylvania. 
In Twenty-second Ann. Rept., Pt. Ill, pp. 127-200. 1902. 
White, I. C. Stratigraphy of the bituminous coal field of Pennsylvania, Ohio, 
and West Virginia. Bulletin No. 65. 212 pp. 1891. {Out of print.) 
Willis, B. The lignites of the Great Sioux Reservation [Dakota] . Bulletin 
No. 21. 16 pp. 1885. 
Some coal fields of Puget Sound [Oregon] . In Eighteenth Ann. Rept. , 
Pt. Ill, pp. 393-436. 1898. 
Woodworth, J. B. The Atlantic coast Triassic coal field [Virginia, North 
Carolina]. In Twenty-second Ann. Rept., Pt. Ill, pp. 25-54. 1902. 
