60 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, [bull. 203. 
M. 
507 Mabery (Charles F.) and Hudson (Edward J.). On the composi- 
tion of California petroleum. 
Am. Acad. Arts and Sciences, Proc, vol. 36, pp. 255-283, 1901. 
Gives results chemical analyses of petroleum oil from various parts of 
California. 
508 McBeth (W. A.). The development of the Wabash drainage sys- 
tem and the recession of the ice sheet in Indiana. 
Ind. Acad. Sci., Proc. for 1900, pp. 184-192, 2 figs., 1901. 
Describes drainage and glacial phenomena. 
509 - - A theory to explain the western Indiana bowlder belts 
Ind. Acad. Sci., Proc. for 1900, pp. 192-194, 1901. 
Considers they were deposited by floating ice. 
510 Macbride (Thomas II.). Geology of Clay and O'Brien counties 
[Iowa |. 
Iowa Geol. Surv., vol. 11, pp. 463-497, figs. 38-39, and map, 1901. 
Describes physiography, the occurrence and character of the Pleisto- 
cene beds and the occurrence of economic products. 
511 McCalley (Henry). The Alabama coal fields. 
Mines and Minerals, vol. 21, pp. 446-449, 3 figs., 1901. 
Describes the general occurrence and character of the coal. 
512 McCallie (S. W.). A preliminary report on the roads and road- 
building materials of Georgia. 
Ga. Geol. Surv. Bull. 8, 264 pp., pis. 13-14, 1901. (Not seen. ) 
513 Some notes on the trap dikes of Georgia. 
Am. Geol., vol. 27, pp. 133-134, pis. 12-14, 1901. 
Describes the character ami occurrence of dike rocks which cut the 
crystalline rocks. 
514 McCaslin (I). S.). The geology of the artesian basin in South 
Dakota. 
Minn. Acad. Nat. Sci., Bull., vol. 3, pp. 380-388, 1901. 
515 McCormick (E.). The Santa Fe mining district, Nevada. 
Mines and Minerals, vol. 21, p. 407 (J p.), 1901. 
Describes the geologic structure of the region and the occurrence of 
copper and silver ores. 
516 McEvoy (James). Report on the geology and natural resources 
of the country traversed by the Yellow Head Pass route 
from Edmonton to Tete Jaune Cache, comprising portions 
of Alberta and British Columbia 
Can. Geol. Surv., new ser., vol. 11, Rept. D, 44 pp., pi. 2, 1901. Pub- 
lished in 1900. 
Describes the physiography and the general character and occurrence 
of the Tertiary, Cretaceous, Cambrian and Archean rocks of the region. 
