10 PUBLICATIONS OF U. S. GEOLOGICAL SURVEY. [bull. 215. 
Pt. III. Coal, oil, cement. 763 pp., 53 pis. 
Coal fields of the United States, by C. W. Hayes, pp. 1-24, pi. i. 
Atlantic coast Triassic coal field, by J. B. Woodworth, pp. 25-53, pis. 
ii-v. 
Pennsylvania anthracite coal field, by H. H. Stoek, pp. 55-117, pis. vi-x. 
Northern Appalachian coal field, by M. R. Campbell, David White, 
and R. M. Haseltine, pp. 119-226, pis. xi-xii. 
Southern Appalachian coal field, by C. W. Hayes, pp. 227-263, pis. 
xiii-xv. 
Eastern Interior coal field, by G. H. Ashley, pp. 265-305, pis. xvi-xix. 
Northern Interior coal field, by A. C. Lane, pp. 307-331, pis. xx-xxi. 
Western Interior coal field, by H. F. Bain, pp. 333-366, pis. xxii-xxiv. 
Southwestern coal field, by J. A. Taff, pp. 367-413, pis. xxv-xxviii. 
Rocky Mountain coal fields, by L. S. Storrs, pp. 415-471, pis. xxix-xxx. 
Pacific Coast coal fields, by G. 0. Smith, pp. 473-513, pis. xxxi-xxxiv. 
Coal resources of Alaska, by A. H. Brooks, pp. 515-571, pi. xxxv. 
The Gaines oil field of northern Pennsylvania, by M. L. Fuller, pp. 
573-627, pis. xxxvi-xliii. 
Portland cement industry in Michigan, by I. C. Russell, pp. 629-685, pis. 
xliv-xlvi. 
Chalk of southwestern Arkansas, by J. A. Taff, pp. 687-742, pis. xlvii-liii. 
Index, pp. 743-763. 
Pt. IV. Hydrography. 690 pp., 65 pis. 
Report of progress of stream measurements for the calendar year 1900, 
by F. H. Newell, pp. 9-506, pis. i-xxxvi. 
Hydrography of the American isthmus, by A. P. Davis, pp. 507-630, pis. 
xxxvii-1. 
The High Plains and their utilization (concluded), by W. D. Johnson, 
pp. 631-669, pis. li-lxv. 
Index, pp. 671-690. 
Twenty -third Annual Report of the Director of the United States 
Geological Survey to the Secretary of the Interior 1901-02 [Vi- 
gnette] Washington Government Printing Office 1902 
217 pp., 26 pis. An administrative report only. 
A law of Congress approved May 16, 1902, requires the annual report of the 
Director to be confined to one volume. Such papers as have heretofore appeared in 
the Annual Report series are now published in the series of Professional Papers, 
Bulletins, and Water-Supply and Irrigation Papers. 
