Geology and Mineralogy. 481 



The large map (28x49 inches, scale about 8 miles to 1 inch) 

 presents clearly the physical data obtained. 



Another publication of the Survey is Bulletin 26 of the 

 Co-operative Mining Series, being investigations prepared by the 

 ■co-operation of the Illinois Survey, the Engineering Experiment 

 Station of the University of Illinois and the U. S. Bureau of 

 Mines. This bulletin (247 pp., with 8 plates, 31 figures and 7 

 tables) is by Gilbert H. Cady and gives data as to the coal 

 resources of district IV. The district named is the part of the 

 central portion of the State yielding coal of the No. 5, or Spring- 

 field, bed. All of Peoria county is here included, a large part 

 of Fulton county, the part of Sangamon county north of 

 Chatham ; also smaller areas in ten other counties some of which 

 are underlain by this coal. The No. 5 bed yielded over 11 million 

 tons from this district in the year ending June 30, 1920. Among 

 the districts of the Co-operative Investigations, this one ranks 

 second in area, third in order of production, and possibly first in 

 the amount of workable coal. 



9. Illinois State Water Survey. — Bulletin No. 16, Edward 

 Bartow, Chief, gives a report (280 pp., 36 figures) for the years 

 1918, 1919, of the State waters, both chemical and biological. 



Bulletin No. 17, A. M. Buswell, Chief, is an index (17 pp.) to 

 Bulletins 1 to 16. 



10. Geological Survey of Western Australia; A. Gibb Mait- 

 land, Government Geologist, — Publications received include the 

 Annual Progress Report for the year 1920, pp. 31. This is 

 accompanied by a map of Western Australia showing the series 

 of geological sketch maps (four miles to the inch) and other 

 geological maps issued since 1896. Points of special interest are 

 the development of water power for the generation of electricity 

 in the Kimberley division ; petroleum prospects of the Busselton 

 region, in general favorable in outlook; deep borings at several 

 points, for example revealing the presence of coal at various 

 depths in the township of Collie. All of these are by Dr. Mait- 

 land. Other members of the staff also note works of important 

 character. 



Four Bulletins have been issued, as follows : 



No. 78. The mining geology of Kookynie Niagara and Tampa, 

 North Coolgardie Goldfielcl, J. T. Jutson, field geologist; with 

 petrology by R. A. Farquharson. Pp. 98 with 5 plates and six 

 figures. 



No. 79. Mining geology of Comet Vale and Goongarrie, North 

 Coolgardie Goldfielcl, by J. T. Jutson. Mineralogy by E. S. 

 Simpsox and petrology by R. A. Farquharson. Pp. 52, with 8 

 plates and 8 figures. 



No. 80. The Mining Centres of Quinn's and Jasper Hill, 

 Murchison Gold Field, by F. R. Feldtaiann. Pp. 92, with 3 

 plates and 18 figures. 



