weeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1901. 27 
158 Collie (George Lucius). Physiography of Wisconsin. 
Am. Bur. Geog., Bull., vol. 2, 20 pp., Sept., 1901. (Not seen.) 
159 Collier (Arthur J.), Brooks (Alfred 11.) and. Glacial phenomena 
of the Seward Peninsula [Alaska]. 
Sec Brooks (A. II.) and Collier (A. J.), SI. 
160 Collins (G. E.). Vein structure at the Reynolds mine, Georgia. 
Eng. and Mg. Jour., vol. 72, pp. 68-70, figs. 1-11, 1901. 
Discusses the vein phenomena in the auriferous crystalline rocks of 
the region. 
161 Comstock (Theodore B.). The geology and vein phenomena of 
Arizona. 
Am. Inst. Mg. Engrs., Trans., vol. 30, pp. 1038-1101, fig. 1, 1901. 
Gives a general description of the mineral regions. Discusses the oro- 
graphic disturbances and their effects on ore deposition, and describes 
the stratigraphic succession in the state. 
162 Comstock (W. J.), Allen (O. D.) and. Bastnasite and tysonite 
from Colorado. 
See Allen (O. D.) and Comstock (W. J.), 11. 
168 Cooper (A. S.). The origin and occurrence of petroleum in Cali- 
fornia. 
Min. Ind. for 1901, pp. 505-509, fig. 1, 1901. 
Describes the occurrence and character of the oil. 
16-1 Corless (C. V.). The Coal Creek colliery of the Crows Nest Pass 
Coal Co. [Canada]. 
Can. Mg. Rev., vol. 20, pp. 60-67, 16 figs., 1901. 
Can. Mg. Inst., Jour., vol. 4, pp. 155-173, 11 figs., 1901. 
Gives a general description of the geological occurrence of the coal. 
165 Courtis (W. M.). [In discussion of paper by G. O. Smith and 
Bailey Willis on "TheClealum iron ores, Washington."] 
Am. Inst. Mg. Engrs., Trans., vol. 30, pp. 1116-1117. 1901. 
Gives additional analyses of these ores. 
166 Cowles (Henry C). The relation between baseleveling and plant 
distribution. 
Abstract: Science, new ser., vol. 13, pp. 372-373, 1901. 
167 Cragin (F. W r .). A study of some teleosts from the Russel sub- 
stage of the Platte Cretaceous scries. 
Colo. Coll. Stud., vol. 9, pp. 25-37, 2 pis., 1901. (Not seen. | 
168 Crane (W. R.). Kansas coal mining. 
Eng. and Mg. Jour., vol. 72. pp. 748-752, 7 figs., L901. 
Describes the distribution and characters oi the coal-bearing strata. 
