Reviews — Geology of Western Australia. 473 



Resources of California", comprising part iii of Stream Measurements. 

 No. 310 (1913), by Messrs. T. F. Henshaw, H. D. McGlashan, and 

 E. A. Porter, is on the " Surface Water Supply of the United States", 

 being part x, on the Great Basin; and ]N"o. 311 (1912), by Messrs. 

 McGlashan and R. H. Bolster, is on the same general subject, being 

 partxi, on the Pacific coast in California. No. 313 (1913), by Messrs. 

 Hensliaw and G. L. Parker, is part ii of a report on the " "Water Powers 

 of the Cascade Range", well illustrated by maps and diagrams. No. 316 

 (1913) is a brief account of the " Geology and Water Resources of 

 a portion of South-Central Washington ", by Mr. G. A. Waring, who 

 describes the physical features, geology, and agriculture, with 

 accounts of the springs, wells, and systems of irrigation. 



YII. — Geological Stjkvet of Westekst Axtstealia. 



BULLETIN No. 42 (1912) comprises "Contributions to the Study 

 of the Geology and Ore-deposits of Kalgoorlie, East Coolgardie 

 Goldfield ", part i, by Messrs, E. S. Simpson and C. G. Gibson. The 

 geological structure of the area is described by Mr. Gibson, who states 

 that the original rocks were shales, sandstones, grits, and con- 

 glomerates, with possibly interbedded lava-flows, that were deposited 

 probably in pre-Cambrian times on a gneissic or granite floor. The 

 strata were afterwards tilted into highly inclined positions and 

 subsequently invaded by gabbros, diabases, porphyrites, pyroxenites, 

 peridotites, etc. Still later there were intrusions of quartz- and 

 felspar-porphyries, and further earth -movements that gave rise to 

 shearing and faults. Along the shear-planes the auriferous lodes are 

 developed. Accounts are given of the various rocks and mode of 

 occurrence of the ore-deposits. Mr. Simpson then describes the 

 mineralogy of the ore-deposits, the surface and underground waters, 

 and the telluride ores in particular. In a prefatory note the 

 Government geologist, Mr. A. Gibb Maitland, remarks that the 

 results of the researches indicate the probability that the whole of 

 the ore-deposits are likely to persist to the greatest depth to which 

 mining is possible, and that the grade of ore below 2,000 feet 

 may be expected to be as variable as it is above that level. The 

 memoir is well illustrated by maps, views, and microphotographs. 



YIII.— Congo. 



Annales DTJ Mtjsee DTJ Congo Belge. Geologie, ser. iir, tom, i, fasc. 1 : 

 La Faune paleocene de Landana. Par Vincent, Dollo, et Leriche. 

 4to. Bruxelles, 1913. 



ALTHOUGH the existence of these Tertiary beds has been known 

 since 1877, this is the first time their contents have been 

 systematically described and figured. Pechuel - Loesche (1877), 

 d'Andrade (1904), and others have visited the neighbourhood, but 

 beyond fish-remains and some casts of Mollusca few recognizable 

 fossils seem to have been found. The present series have been 

 obtained by M. Diderrich, and show a definite Lower Eocene or 

 passage to Cretaceous facies. The fossils occur in blocks of compact 

 white limestone, recalling white chalk of varying consistency, and 



