publications: annual reports. 129 
Twenty-second Annual Report of the U. S. Geological Survey, etc-. — Continued. 
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. Hasel- 
tine, 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. O. 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. 5U7-630, 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 United States Geological Survey, 1901-2, Charles 
D. Walcott, Director. 1902. 8°. 217 pp., 26 pis. 
Note.— Beginning with the Twenty-third, the Annual Report consists of one volume, such papers 
as had appeared in the Annual Report being thenceforth published as Professional Papers, Bulletins, 
and Water-Supply Papers. 
Twenty-fourth Annual Report of the United States Geological Survey, 1902-3, Charles 
D. Walcott, Director. 1903. 8°. 302 pp. , 26 pis. 
Bull. 227—04 9 
