76 



amount of minable coal under navigable stream beds. The investigation of 

 the amount of minable coal under the Wabash River in Vigo County was 

 undertaken by Dr. S. S. Visher, who completed a report for publication. 

 Dr. Visher also collected samples of limestones, collected information from 

 industrial plants that use Indiana raw materials, located in Vigo, Clay and 

 Putnam counties and carried on investigations in the oil field of Sullivan 

 County. 



In cooperation with the United States Geological Survey, the mapping of 

 the Bedford and the Heltonville quadrangles lying adjacent to the Bloom- 

 ington quadrangles was begun in September and continued until the first 

 of November. Work will be resumed with favorable weather in the Spring. 



PUBLISHED PAPERS. 



Shorter articles were prepared and published as follows : 



"The Natural Resources of Indiana and Their Utilization", published in 

 the Guide book issued l)y the American Chemical. Metallurgical and Min- 

 ing Institute. 



"The Raw Materials of Indiana", published in the Chemical and Metal- 

 lurgical Journal. 



"The Occurrence of Coal in Monroe County", by the Indiana Academy of 

 Science, 



"On the Occurrence of Indianaite", Indiana Academy of Science. 



"High Grade Clays and Kaolins of Indiana", United States Geological 

 Survey. 



PROPOSED LINES OF INVESTIGATIONS. 



The division has in progress the investigation of the oil l)earing shales of 

 Indiana ; the investigation of the shales of the Chester group and the flre 

 clays of the state to determine their value to the ceramic industry ; the in- 

 vestigation of the limestones of the state to determine which are best suited 

 for agricultural jjurposcs: llic jiicpai-ation of a hjiiid IkmiU on the Geology 

 of Indiana. In Ihc pi'cparaf ion of this voliinic. I»i-. 10. R. Cummings will 

 have charge of Ilic pnrtioii (ni sti-atigr.-ipby aiid i)alcoHtology. Dr. C. A. 

 Malott the portion on lopograpliy and glaciolotiv. Dr. S. S. Visher the por- 

 tion on geography and hydrohtgy. and the writer the portion dealing with 

 economic geology. Two advance chapters of this volume which have been 

 prepared will be given wider distril)Ution than the handbook. The study of 

 the stratigraphy of the Chester group will be continued by Dr. Malott. It is 

 hoped that we will be able to continue the topographic mapping until every 

 (luadrangle in the State of Indiana has been mapped. 



