REVIEWS 645 
and Upper Silurian Rocks of Clark, Jefferson, Ripley, Jennings and 
Southern Decatur Counties,” by August F. Foerste; “‘The Bedford 
Odlitic Limestone of Indiana,” by T. C. Hopkins and C. E. Sieben- 
thal; “The Report of the State Natural Gas Supervisor,” by J. C. 
Leach ; ‘The Report of the State Inspector of Mines,” by Robert 
Fisher ; ‘The Report of the State Supervisor of Oils,” by C. F. Hall ; 
“The Geology of Vigo County,” by J. T. Scoville ; and ‘“‘ A Catalogue of 
the Ferns and Flowering Plants of Vigo County,” by W. S. Blatchley. 
The paper of the state geologist on the petroleum industry of 
Indiana treats of the geographical and geological distribution of 
petroleum, of its origin, and the physical and chemical properties of 
the Indiana petroleum. He describes the oil fields by counties, intro- 
ducing local details. The report closes with a chapter of a practical 
and economical character relating to the choosing of a locality for 
operating, the locating, drilling, and shooting of the wells, and their 
cost, accompanied by statistics with regard to the Indiana oil pro- 
duction. 
Mr. Noyes gives the results of the twenty-seven analyses of coals, 
with an interpretation of results and a comparison of the coals. 
The Notes on the Genessee Shale of New Albany, embrace chemical 
analyses, a statement of the previous experiments in utilizing the shale, 
and of new methods proposed by Mr. Duden, together with a discus- 
sion of the source of the bitumen embraced in the shales. The paper 
is accompanied by a description of some of the fossil plants discovered. 
The discussion of the Indiana caves by the state geologist 
embraces descriptions of eighteen caves located in Owen, Monroe, 
Lawrence, Washington, and Crawford counties, accompanied by maps 
and photographic illustrations. This is supplemented by a description 
of the fauna of the caves, embracing mammals, batrachians, fishes, 
insects, and crustaceans, the descriptions being by W. S. Blatchley, J. 
M. Aldrich, Mary Murtfeldt, H. F. Wickham, and W. P. Hay. 
In his discussion of the geology of the Middle and Upper Silurian 
rocks of the southeastern counties of Indiana, Dr. Foerste subdivides 
the formations for the purpose of more exact and refined study, as 
follows in descending order: The Niagara, into (1) the Louisville 
limestone or Utica lime rock, (2) the Waldron shale, (3) the Laurel 
limestone or Cliff rock, (4) the Osgood or cystidian beds, divided in 
places into (a) the Upper Osgood clay, (4) the Osgood limestone, (c) 
the Lower Osgood Clay. The Clinton group he does not subdivide. 
