4:22 Scientific Intelligence. 



Alden and Leighton reach the conclusion that a drift older 

 than the Wisconsin and younger than the Illinoian is found in 

 northeastern Iowa and that consequently the Iowan stage of 

 glaciation should stand as a major subdivision. Dr. Kay 

 describes unusually complete exposures of loess. Kansas »'iim- 

 botil, Kansas drift, Nebraskan gumbotil, and Nebraskan drift 

 along the newly graded Chicago, Milwaukee & St. Paul Railroad. 

 Mr. Carman contributes a detailed description of the Pleistocene 

 deposits of a part, of Iowa which have been relatively little 

 studied. A valuable investigation on the adaptability to indus- 

 trial purposes of the river waters of Iowa has been undertaken 

 by George A. Gabriel. jr. E. o. 



3. Western Australia, Geological Survey. — The activities of 

 the West Australian Geological Survey are recorded in the 

 Annual Progress Report for 1916, by A. Gibb Maitland, Govern- 

 ment Geologist (pp. 32, 2 maps, 1917). In addition to economic 

 investigations in the Yalgoo, Kendenup, Yilgarn, Comet Vale, 

 and Murchison districts, studies were made of the great fault 

 system of the Southwest Division and a reconnaissance survey 

 carried over the little-known region between Laverton and the 

 South Australian border. Sufficient exploration has now been 

 completed to justify the preparation of a much desired geologic 

 map of the State. 



Two detailed reports on economic geology and one on paleon- 

 tology have also been issued : The Geology and Ore Deposits of 

 Meekatharra, Murchison Goldfield, by E. deC. Clarke, with 

 chapters on Petrology, by R. A. Farquharson, and on Mineralogy 

 and Ground Waters, by E. S. Simpson (Bulletin 68, pp. 342, 

 88 figs.; 25 pis. in separate volume, 1917) ; The Geology and 

 Ore Deposits of Kalgoorlie, East Coolgardie Goldfield, Part III, 

 by F. R. Feldtmann (pp. 152, 43 figs. ; 14 pis. in separate 

 volume, 1916) ; Paleontological Contributions to the Geology 

 of Western Australia, Series VI, Nos. XI and XII, by F. Chap- 

 man and R. Etheridge, Jr. (Bulletin 72, pp. 59, 15 pis., 1 map, 

 1917). Mr. Chapman describes the Foraminifera and Ostra- 

 coda of the Gingin Chalk, a remarkable deposit "nearly equiv- 

 alent in age, structure, and organic contents to the Chalk of 

 Upper Cretaceous age in Europe and America" and probably 

 laid down in "deep gulfs running into the Continent." Mr. 

 Etheridge calls attention to the presence of Girvanella associated 

 with Salterella hardmani in the Cambrian in the Kimberley 

 region. ii. e. g. 



4. Annual Report of the Director of Mines and Government 

 Geologist for 1916, South Australia; by L. Keith Ward. Pp. 

 18, 2 maps, 1917. — As in previous years the staff of the Govern- 

 ment Geologist was largely concerned with the examination of 

 and reports on actual and prospective mineral localities. (The 

 results of these studies for 1916 are published separately under 

 the title, "Review of Mining Operations.") The features of 



