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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 by 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 bearing shales of 
Indiana; the investigation of the shales of the Chester group and the fire 
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 purposes; the preparation of a hand-book on the Geology 
of Indiana. In the preparation of this volume, Dr. E. R. Cummings will 
“have charge of the portion on stratigraphy and paleontology, Dr. C. A. 
Malott the portion on topography and glaciology, Dr. S. S. Visher the por- 
tion on geography and hydrology, and the writer the portion dealing with 
economic geology. Two advance chapters of this volume which have been 
prepared will be given wider distribution 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 
quadrangle in the State of Indiana has been mapped. 
