550 Scientific Intelligence. 



3. Materialien zu einer Monographic der Halobiidae und 

 Monotidae der Trias ; by Ernst Kittl. Extracted from "Resul- 

 tate der wissenschaftl. Erforschung des Balatonsees," I. Bd., I. 

 Teil, Pal. Bd. II. Pp. 229, 10 pis., 37 text figs., 1912.— Here are 

 described with care a wealth of Triassic bivalves of the families 

 Halobiidae and Monotidae. The Paleozoic genus Posidonia is 

 the stem form of the Halobiidse, out of which in Triassic time 

 developed Daonella, and the stock then gave rise either mono- 

 phyletically or more probably polyphyletically to Halobia. The 

 new genera Enteropleura and Dipleurites each have but a single 

 species restricted to the Triassic of Germany. The family Mono- 

 tidae has but the one genus Monotis. 



Considerable space is also devoted to young and small forms, 

 and to a discussion of how to distinguish them from the phyllo- 

 pods such as Estheria. c. s. 



4. Das Gesetz der W ustenbildung in Gegenwart und Vbr- 

 zeit ; by Johannes Walther. Second edition. Pp. 342, 147 

 figs. Leipzig, 1912. — The first edition of this interesting and 

 highly instructive book appeared in 1900. Since then the author 

 has again visited Egypt and the Sudan. The present edition is 

 much improved, and is longer and far better illustrated. It is of 

 great import to geologists and glaciologists. In studying ancient 

 glacial climates the author finds it necessary to accept the theory 

 of pole wandering. c. s. 



5. Palaeontologia Universalis, Fasc. I, Ser. IV, July, 1912. 

 — This part treats of twenty-five old species here redefined. Of 

 American species there are : Calymene callicephala, G. platys, 

 Asaphus micrurns, and Ceraurus pleurexanthemus. c. s. 



6. Canada Department of Mines. — Recent publications of 

 the Canada Department of Mines (see vol. xxxiv, p. 487) are as 

 follows : 



(1) Geological Survey Branch ; R. W. Brock, Director. 

 Summary Report for the calendar year 1911. Pp. x, 412 ; 7 text 

 figures and 9 diagrams and 2 maps. This is a general account of 

 the work of the year giving an outline of what was accomplished 

 by some forty parties, including six engaged in topographical 

 work. 



(2) Mines Branch ; Eugene Haanel, Director. Summary 

 Report for the calendar year ending December 31, 1911. Pp. ix, 

 208 ; 16 plates, 6 figures, and one map. 



General Summary of the Mineral Production of Canada dur- 

 ing the calendar year 1911 ; John McLeish. Pp. 38. Special 

 reports by the same author have also been issued discussing the 

 production in 1911 of cement, clay products, etc.; of iron and 

 steel ; of copper, gold, lead, nickel, etc. ; of coal and coke. 



Preliminary Report on the Mineral Production of Canada 

 during the calendar year 1912 ; prepared by John McLeish. 

 The total value of the mineral production was $133,127,500, an 

 increase of about $30,000,000, or 29 p. c, over 1911. 



An Investigation of the Coals of Canada with reference to 

 their Economic Qualities as conducted at McGill University, 



