574 Sou ntifio Intelligence. 



control rainfall, the "lacier descends to a point only 692 feet 

 above sea level. Fluctuations in volume of ice are plainly indi- 

 cated, and show that during Pleistocene time the glacier deployed 

 on the Westland coastal plain as an extensive piedmont glacier. 

 About 150 years ago the ice in the valley stood 250 feet above its 

 present level ; then followed a period of retreat, succeeded by a sec- 

 ond advance ; the amount of elongation from March, 1908, to April, 

 1909, being 132 to 162 feet. As an aid in determining future move- 

 ments of the ice, observation stations have been established by 

 the Survey. In addition to a discussion of glaciation, the report 

 contains a brief account of the geology of the region and also a 

 list of plants. ii. e. g. 



3. Geological Survey of Western Australia, Bulletin No. 89. • 

 Geological Observations in the country between Wiluna, Hall's 

 Creek and Tanami ; by H. W. B. Talbot. Pp. 88 ; 3 maps, 

 44 figures. Perth, 1910 (Fred. W. Simpson). — New and inter- 

 esting information regarding the geology and geography 

 of the great central Australian desert is being furnished as 

 a result of the examination of coal, water, and mineral resources 

 of West Australia. The present bulletin gives the results of a 

 reconnaissance of a strip 150 miles in width, extending from 

 Wiluna northeast to Hall's Creek, covering a region in which no 

 geological work has previously been done. Perhaps the most 

 important discovery is the fact that sedimentary rocks extend 

 through 7° of latitude and occupy an area previously assumed to 

 be part of an Archean mass which had never been submerged. 

 Metamorphosed sedimentaries are overlain by Devonian sand- 

 stones, grits, and conglomerates, followed by Carboniferous 

 quartzites, sandstones, and shales. No fossils were found, the 

 age being determined by lithologic similarity and stratigraphic 

 position. The surface cover includes alluvium from living and 

 extinct streams, sand dunes, and extensive deposits of travertine. 

 As a geographic report the bulletin is valuable for its descriptions 

 of desert scenery, wind erosion, conditions of life, and character of 

 vegetation. Extinct lakes, abandoned channels, and other topo- 

 graphic features, indicate that this region furnishes an unusual 

 opportunity for the study of climatic changes in recent geologic 

 time. h. e. g. 



4. Geological Survey of Canada ; Among the numerous publi- 

 cations of the Geological Survey Branch of the Canada Depart- 

 ment of Mines, which have recently been issued (see vol. xxx, 

 p. 357), are the following memoirs : 



No. 6. (1081.) Geology of the Haliburton and Bancroft Areas, 

 Ontario; by Frank S. Adams and Alfred E. Barlow. Pp. 

 viii, 419 ; 70 plates, 7 figures, 2 maps. 



No. 1. (J 091.) Geology of the Nipigon Basin, Ontario; by 

 A. W. G. Wilson. Pp. 152 ; 16 plates, 4 figures, 1 map. 



No. 2. (1093.) The Geology and Ore Deposits of Hedley Min- 

 ing District, British Columbia, by Charles Camsell. Pp. 218 ; 

 20 plates, 8 figures, 4 maps. 



