RECENT PUBLICATIONS 663 



-Martin, G. C. Gold, Silver, Copper, and Lead in Alaska in 191S. [U.S. 



Geological Survey, Mineral Resources of the United States, 1918, Part I, 



Sec. 6. Mines Report. Washington, 1919.] 

 -Martin, G. C., and others. Mineral Resources of Alaska. Report on 



Progress of Investigations in 1917. [U.S. Geological Survey, Bulletin 692. 



Washington, 1919.] 

 -Maryland Geological Survey. Report on the Physical Features of Anne 



Arundel County. With topographical, geological, and agricultural soil 



maps. [Baltimore, 1916.] 

 -Morgan, P. G. The Limestone and Phosphate Resources of New Zealand 



(considered principally in relation to agriculture). Part I. Limestone. 



[New Zealand Department of Mines, Geological Survey Branch, Bulletin 



No. 22 (New Series). Wellington, 1919.] 

 -NiCKLES, J. M. Bibliography of North American Geology for 1918, with 



Subject Index. [U.S. Geological Survey, Bulletin 698. Washington, 



1919.] 

 -Northrop, J. D. Petroleum in 191 7. [U.S. Geological Survey, Mineral 



Resources of the United States, 1917, Part II, Sec. 31. Washington, 1919.] 

 -OsBON, C. C. Peat in 1918. [U.S. Geological Survey, Mineral Resources of 



the United States, 1918, Part II, Sec. 15, pp. 331-56. Washington, 1919.] 

 Peat in the Dismal Swamp, Virginia and North Carolina. [U.S. 



Geological Survey, Bulletin 711-C. Washington, 1919.] 

 -Pardee, J. T., and Jones, E. L., Jr. Deposits of Manganese Ore in Nevada. 



[U.S. Geological Survey, Bulletin 710-F. Washington, 1920.] 

 -Ransome, F. L. Quicksilver in 1918. With a Supplementary Bibliography 



by Isabel P. Evans. [U.S. Geological Survey, Mineral Resources of the 



United States, 1918, Part I, Sec. 7. Washington, 1919.] 

 -Resources of Tennessee. Vol. IX (1919), nos. i, 2, 4. 

 -Richardson, W. D. The Singing Sands of Lake Michigan. [Science, N.S., 



Vol. L, No. 1300, pp. 493-95. Lancaster, Pa., Nov. 28, 1919.] 

 -Rogers, G. S. The Sunset-Midway Oil Field, California. Part II. 



Geochemical Relations of the Oil, Gas, and Water. [U. S. Geological 



Survey, Professional Paper 117. Washington, 1919.] 

 -Sauer, C. O. The Geography of the Ozark Highland of Alissouri. [The 



Geographic Society of Chicago, Bulletin No. 7. The University of 



Chicago Press. Chicago, 1920. (Price $3 . 00 net ; postpaid, $3 . 12).] 

 -ScHWENNESEN, A. T. Gcology and water Resources of the Gila and San 



Carlos Valleys in the San Carlos Indian Reservation, Arizona. [U.S. 



Geological Survey, Water-Supply Paper 450-A. Washington, 1919.] 

 -Sears, J. D. Deposits of Manganese Ore in Costa Rica and Panama. 



[U.S. Geological Survey, Bulletin 710-C. Washington, 1919.] 

 -Seward, A. C. Fossil Plants: A Text-book for Students of Botany and 



Geology. Vol. IV, Ginkgoales, Coniferales, Gnetales. [Cambridge: 



University Press. 1919.] 



