weeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 37 
Crook (A. R.). 
1. Missouri lead and zinc regions visited by the Geological Society of 
America. 
Science, new ser., vol. 19, pp. 197-198, 1904. 
Describes the occurrence of ore deposits. 
2. Molybdenite at Crown Point, Washington. 
Geol. Soc. Am., Bull., vol. 15, pp. 283-288, 2 pis., 1904. 
Describes the occurrence, relations to surrounding rocks, and character of 
molybdenite ore at Crown Point, Washington. 
Crosby (W. O.). 
1. Memoir of Alpheus Hyatt. 
Geol. Soc. Am., Bull., vol. 14, pp. 504-512, pi. 64 (por.), 1904. 
Includes a list of papers published by the subject of the memoir. 
2. Structure and composition of the delta plains formed during the 
Clinton stage in the Glacial lake of the Nashua Valley. [Con- 
tinuation.] 
Tech. Quart., vol. 17, pp. 37-75, 3 pis., 17 figs., 1904. 
Describes the structure and process of building of Glacial delta plains and the 
character and occurrence of various Glacial deposits, and discusses their 
origin. 
For previous part of the paper, see no. 249 of TJ. S. Geol. Surv., Bull. ho. 240. 
3. Geology of the Weston aqueduct of the Metropolitan waterworks 
in Southboro, Framingham, Wayland, and Weston, Massachu- 
setts. 
Tech. Quart., vol. 17, pp. 101-116, 1 fig., 1904. 
Describes the character and occurrence of the rocks in the tunnels of the 
Weston aqueduct and discusses their geologic relations and their age. 
4. Notes on the wells, springs, and general water resources of Rhode 
Island. 
U. S. Geol. Surv., Water-Supply and Irrigation Paper no. 102, pp. 119-125, 
1904. 
Crosby (W. O.) and La Forge (Lawrence). 
1. Notes on the welis, springs, and general water resources of Massa- 
chusetts. 
U. S. Geol. Surv., Water-Supply and Irrigation Paper no. 102, pp. 94-117, 
1904. 
Crosby (W. O.) and Loughlin (G. F.). 
1. A descriptive catalogue of the building stones of Boston and 
vicinity. 
Tech. Quart, vol. 17, pp. 165-185, 1904. 
Describes the geologic and geographic occurrence, character, and use in 
Boston of various building stones. 
Cross (Charles Mortimer). 
1. The underground water circulation. 
Ores and Metals, vol. 13, no. 15, pp. 21, 37-38, no. 16, p. 22, 1904. 
Discusses ore deposition by circulating waters. 
