; 



466 Scientific Intelligence. 



Part VI, devoted to the Mineral Resources of the United States 

 for 1899, prepared by David T. Day, is issued in two volumes, of 

 upwards of 600 pages each. The first includes Metallic Products 

 with Coal and Coke ; the second Non-Metallic Products. The 

 separate topics are handled as heretofore by different individuals, 

 and a large amount of information is thus put before the public, 

 with great promptness, in regard to the development of the min- 

 eral wealth of the country. 



- 4. Indiana : Department of Geology and Natural Resources. 

 25th Annual Report, 1900. W. S. Blatchley, State Geologist. — 

 In addition to the usual annual reports and statistics on oil, gas, 

 coal and building stone, this volume contains articles on Portland 

 Cement, by W. S. Blatchley, and Hydraulic Limestone of South- 

 eastern Indiana, by C. E. Siebenthal. The paper on The Lakes 

 of Northern Indiana and their associated Marl Deposits, by W. S, 

 Blatchley and Geo. II. Ashley (pp. 31-322), takes up the ques- 

 tion of the origin of the lakes and of the marl and gives maps 

 and detailed descriptions with analyses of over 100 occurrences. 

 'The original source of the marl material is the glacial clay and it 

 is brought into the lakes by subaqueous springs and is deposited 

 because of the loss of carbondioxide. This loss is caused either 

 by increase in temperature or decrease in pressure or by the 

 action of aquatic plants.' This conclusion is not in accord with 

 the results obtained by C. A. Davis from a study of the Michi- 

 gan lakes (Jour, of Geol., Sept.-Oct., 1900, and Sept.-Oct., 1901), 

 in which plants " alone have produced a very large part of the 

 marl." In this volume (pp. 530-758 4- 31 plates) Dr. E. M. 

 Kindle publishes his final paper on the Devonian Fossils and 

 Stratigraphy of Indiana. h. e. g. 



5. Geological Survey of New Jersey, Annual Report, 1900. 

 Trenton. — This report shows progress in all divisions of the state 

 work. One-sixth of the field work for the new topographic map 

 (2000 ft. to the inch) is now done ; a new series of geological 

 maps is planned ; the study of the Paleozoic formation was con- 

 tinued : much new data was collected on artesian wells, forestry, 

 drainage of swamps, etc. The report includes the following 

 papers : A Preliminary Report on the Palaeozoic Formations, by 

 Stuart Weller (pp. 1-8) ; Report on Portland Cement Industry, 

 by H. B. Kimmel (pp. 9-101) ; Artesian Wells, by Lewis Wool- 

 man (pp. 103-171) ; Mineralogical Notes, by Albert H. Chester 

 (pp. 173-188) ; Chlorine in the Natural Waters of the State, by 

 Wm. S. Myers (pp. 189-196) ; the Mining Industry, by H. B. 

 Kimmel (pp. 197-213). h. e. g. 



6. Ice Ramparts ; by E. R. Buckley, Ph.D., with a discus- 

 sion by Professor C. R. Van Hise. Trans. Wis. Acad, of Sciences, 

 Arts and Letters, vol. xiii, pp. 141-162 with 17 plates.— Dr. 

 Buckley has made a study of the behavior of expanding and con- 

 tracting ice and the resulting deformation of the ice and of the 

 shore. The facts collected are of interest in themselves, but as 

 Professor Van Hise points out, their greatest value lies in the 



