Authors' Catalogue. 6i 
Geological Survey of Alabama ; Report on the Warrior Coal Ba- 
sin. By Henry McCalley, Assistant State Geologist. Pages xiii, 
327: with 50 figures in the text, 7 plates and a map, 1900. 
The area here described comprises about 3.000 square miles in 
northwestern Alabama, drained by the Black Warrior river and its 
tributaries. It has twenty-three coal seams, which, in their varying 
development, have an aggregate thickness from about 10 to 115 feet. 
Seventeen of the seams have extensive workable outcrops, the maxi- 
mum thickness attained by a single seam being 16 feet. Although the 
first mining in a systematic manner was so recent as the year 1872, 
the progress and present importance of the coal production of this 
district place it in the front rank with the great bitviminous coal m.in- 
ing districts of the world. Its output during the year i8g8 was 
5-556.532 tons. The most of this coal is used within the State of Ala- 
bama, largely in the neighboring city of Birmingham and its vicinity; 
and nearly 2.000,000 tons of it, in 1898, were made into coke for iron 
ore smeltinig. w. u. 
MONTHLY AUTHORS' CATALOGUE 
OF American Geological Literature, 
Arranged Alphabetically* 
Adams, Frank D. 
Sir William Dawson. (Can. Rec. Sci., vol. 8, pp. 137-149. Jan., 1900, 
portrait.) 
Ami, H. M. 
Notes on some of the formations belonging to the Carboniferous sys- 
tem in Eastern Canada. (Can. Rec. Sci., vol. 8, pp. 149-163. Jan., 1900.) 
Bailey, E. H. S. (G. P. Grimsley, and) 
Special report on Gypsum and Gypsum cement plasters. Univ. 
Geol. Surv., Kans., vol. v. Topeka, 1899. 
Bayley. W. S. 
The Sturgeon River Tongue. (Men. 36, U. S. G. S,, pp. 458-486, pis. 
5I-53-) 
Clarke, John M . 
The Paleozoic faunas of Para, Brazil, i. The Silurian fauna of the 
Rio Trombetas; 2. The Devonian Mollusca of the state of Para. (Arch. 
do Museu Nacional, Rio de Janeiro, vol. 10, 1899. Author's English edi- 
tion, pp. 127, 8 plates.) 
Clements, J. M. (and H. L. Smyth). 
The Crystal Falls Iron-bearing district of Michigan. U. S. G. Surv. 
Mon. 36, pp. 512, 53 plates, 1899. 
*Tliis list includes titles of articles received up to the 20th of the preceding 
month, includiag greueral t^eolouy, physiography, paleontology, petrology and 
mineralogy'. 
