RECENT PUBLICATIONS 611 
The Geomorphic Features of the Middle Kern. [University of California 
Publications. Bulletin of the Department of Geology, Vol. IV, No. 16, 
pp- 397-409, Pls. 38-41. Berkeley, September, 1906.] 
The Geomorphogeny of the Telachapi Valley System. [University of 
California Publications. Bulletin of the Department of Geology, Vol. IV, 
No. 19, pp. 431-62, Pls. 42-51. Berkeley, September, 1906.] 
—Ler, W. T. Geology of the Lower Colorado River. [Bulletin of the Geologi- 
cal Society of America, Vol. XVII, pp. 275-84, Pls. 32-34. Rochester, 
June, 1906.] 
Water Resources of the Rio Grande Valley in New Mexico and Their 
Development. [U. S. Geological Survey. Water-Supply and Irrigation 
Paper No. 188. Series B, Descriptive Geology, 108. Series O, Underground 
Waters, 66. Washington, 1907.] 
—Leritu, C. K. Iron Ore Reserves. [Reprinted from Economic Geology, 
Vol. I, No. 4, 1906.] 
—LEvERETT, F., AND OTHERS. Flowing Wells and Municipal Water Supplies 
in the Middle and Northern Portions of the Southern Peninsula of Michigan. 
[U. S. Geological Survey. Water-Supply and Irrigation Paper No. 183. 
Series O, Underground Waters, 63. Washington, 1907.] 
Flowing Wells and Municipal Water Supplies in the Southern Portion of 
the Southern Peninsula of Michigan. [U. S. Geological Survey. Water- 
Supply and Irrigation Paper No. 182. Series O, Underground Waters, 62. 
Washington, 1906.] 
—LEVERETT, F., VAUGHAN, V. C., Witttas, G. S., LericHton, M. O., RUSSELL, 
I. C. Symposium on Water Supplies in Michigan. [Reprinted from the 
Eighth Annual Report of the Michigan Academy of Science.] 
—Lewis, A. W. A New Illinois Oil Field. [The Mining World, April 14, 1906.1 
—Lewis, J.V. An Ontario Lead Deposit. [Reprinted from Economic Geology, 
Vol. I, No. 7, July-August, 1906.] 
—Lewis, S. J. Quality of Water in the Upper Ohio River Basin and at Erie, 
Pa. [U.S. Geological Survey. Water-Supply and Irrigation Paper No. 16r. 
Series L, Quality of Water, 13. Washington, 1906.] 
—Lutt, Pu.D., R. The Evolution of the Horse Family. [Yale University. 
Peabody Museum of Natural History, Guide No. 1. Reprinted from The 
American Journal of Science, Vol. XXIII, March, 1907.] 
—MansrFieLp, G. R. The Origin and Structure of the Roxbury Conglomerate. 
[Bulletin of the Museum of Comparative Zodlogy at Harvard College, Vol. 
XLIX. Geological Series, Vol. VIII, No. 4. Cambridge, Mass., Novem- 
ber, 1906.] 
—Marr, Sc.D., F.R.S., Joun Epwarp. Address delivered at the Anniver- 
sary Meeting of the Geological Society of London, on February 16, 1906. 
[London, 1906.] 
