Geology. 559 



No. 232. Underground Water Resources of Connecticut; by 

 Herbert E. Gregory. With a Study of the Occurrence of 

 Water in Crystalline Rocks ; by E. E. Ellis. Pp. 200 ; 5 plates, 

 31 figures. 



No. 235. The Purification of some Textile and other Factory 

 Wastes ; by Herman Stabler and Gilbert H. Pratt. Pre- 

 pared in cooperation with Rhode Island State Board of Health. 

 Pp. 76. 



No. 242. Surface Water Supply of the United States, 1907-8. 

 Part II. South Atlantic Coast and Eastern Gulf of Mexico. 

 Prepared under the direction of M. O. Leighton, by M. R. Hall 

 and R. H. Bolster. Pp. 226 ; 3 plates, 1 figure. 



2. Indiana — Department of Geology and Natural Resources. 

 Thirty- Third Annual Report. W. S. Blatchley, State Geolo- 

 gist, 1908. Pp. 663, 4 plates, 1 figure. Indianapolis, 1909 (Wm. 

 B. Burford). — The most extensive chapter in this volume is 

 devoted to the coal deposits, and is supplementary to the report 

 on the same subject issued in 1898 ; it is accompanied by a large 

 map. It is stated that a conservative estimate puts the amount of 

 coal in the state at 50 billion tons, of which 14 billion are regarded 

 as workable under present conditions. In 1907, 13,250,000 tons 

 were mined, and the rate has increased at about one million tons 

 per year. Other chapters deal with soil surveys in several coun- 

 ties, the petroleum industry and that of the natural gas, now 

 nearly exhausted. Strictly scientific papers are given by E. M. 

 Kindle and V. H. Barnett on the Waldron fauna of Southern 

 Indiana, and by W. L. Hahn on the mammals of the state. 



3. Colorado Geological Survey ; R. D. George, State Geol- 

 ogist. First Report, 1908. 229 pp., 4 maps, 22 pis. — Colorado 

 has had a state geologist since 1872 ; an official, however, who 

 has had no funds at his disposal to carry on the work. The state 

 legislature of 1907 established the State Geological Survey with 

 an appropriation which, though small, has already resulted in 

 accomplishing important work. The newly appointed State 

 Geologist, with the cooperation of Professor Patton and a geolog- 

 ical staff of fifteen men, has completed a report on the " Main 

 Tungsten Area of Boulder County," the " Montezuma Mining 

 District of Summit County," the "Foothills Formation of Northern 

 Colorado," and the "Hahn's Peak Region, Routt County." A 

 topographical map of the state has been compiled and will soon 

 be issued ; the Survey is engaged in compiling a geological map 

 of the state which will present the results of all the work done 

 up to the present time. The plans as outlined for the future 

 indicate an intelligent appreciation of the needs of the state and 

 of the opportunity for investigation of important geological 

 problems. h. e. g. 



4. Geological Survey of Michigan. — The Ninth Annual Report 

 of the State Geologist, Alfred C. Lane, for the year 1907 has 

 recently been issued. Also, as part of the same, the following : 



