544 Scientific Intelligence. 



Orton, Jr. and S. V. Peppel ; No. 5 to the Manufacture of arti- 

 ficial Sandstone and Sand-lime Brick, by S. Y. Peppel. The rocks 

 of Ohio consist so largely of limestone, that it is not a matter of 

 surprise to have it stated that these strata furnish the material 

 which makes up almost a third of the present mineral resources 

 of Ohio. The stratigraphical relations of the limestone have 

 been discussed in detail in earlier publications, and the present 

 one is devoted largely to a statement of the composition of the 

 rock at different localities and of the uses to which it is put, for 

 building material and particularly for making quicklime and 

 hydraulic cements. An industry, new in this country, has also 

 sprung up in the state, consisting in the manufacture of bricks 

 from sand and quicklime ; it promises to become an important 

 factor in the state's resources. The bulletin (No. 5) devoted to 

 this subject discusses the properties of sand-lime brick and the 

 limiting conditions for the manufacture of a safe and durable 

 product. 



4. Indiana : Department of Geology and Natural Resources. 

 Thirteenth Annual Report. W. S. Blatchley, State Geologist. 

 Pp. 1494, with 4:1 plates and 25 maps. Indianapolis, 1906. — The 

 special subject of roads and road materials discussed in this 

 report is one of the highest importance and requiring the best 

 scientific advice, and yet not often treated so fully by a Geolog- 

 ical Survey. This subject is discussed first in general by the 



• State Geologist, and then in detail by his assistants in its appli- 

 cations to the different portions of the state. The value of the 

 facts stated and of the results arrived at are obviously not 

 limited to the state of Indiana. Statistics of the natural gas and 

 petroleum industry for 1905 are also given and the concluding 

 chapter by E. R. Cumings and J. W. Beede is devoted to the 

 fauna of the Salem limestone. 



5. Geological Survey of New Jersey. Annual Report of the 

 State Geologist, Henry B. Kummel, for the year 1905. Pp. 

 338, with 30 plates, 21 figures, and 3 pocket maps. Trenton, 

 1905. — The subjects which are particularly discussed in this 

 Report include the following : Changes on the New Jersey 

 coast, by L. M. Haupt ; an account of the fossil plants, by E. W. 

 Berry ; the composition of the crystalline limestones of Sussex 

 and Warren Counties, by H. B. Kiimmel ; Lake Passaic as a 

 storage reservoir, by C. C. Vermeule ; and on the peat deposits 

 of northern New Jersey. The State Geologist furnishes an 

 administrative report which opens the volume, and also an 

 account of the mines and mineral production of the state. 



6. Geological Survey of Canada ; Robert Bell, Director. — 

 There have recently appeared Volumes XIV and XV of the 

 Annual Report (new series). Volume XIV contains the sum- 

 mary report by the Director for the year 1901 ; also a series of 

 special papers as follows : On the Klondike Gold Fields, by R. 

 G. McConnell ; on the exploration of Ekwan River and Sutton 

 Lakes and part of the West Coast to James Bay, by D. B. Dow- 



