ECONOMICS AND SOCIOLOGY — WRIGHT. 1 63 



School of Mines ; a history of anthracite, by Mr. H. H. Stoek, editor 

 of Mines and Minerals, Scranton, Pennsylvania. Mr. Stoek has 

 completed a large part of his work and hopes to put it all in shape 

 in the near future. The history of bituminous coal mining is in 

 charge of Prof. W. S. Landis, of Lehigh University, Bethlehem, 

 Pennsylvania, who has submitted the manuscript of his report and 

 also chapters on the history of manganese mining in the United 

 States and the history of chromium. 



The subject of petroleum and natural gas is in charge of Prof. 

 G. P. Grimsley, assistant state geologist, West Virginia University, 

 Morgantown, West Virginia. He is now completing the collection 

 of data and arranging the material ; he has also arranged quite an 

 extensive bibliography in his division of work. 



Mr. F. B. Laney, of the University of North Carolina, is con- 

 ducting an inquiry as to building stones and quarrying. 



The history of the clay industry in the United States is being 

 prepared by Dr. Heinrich Ries, professor of economic geology, Cor- 

 nell University. 



Edwin C. Eckel, U. S. Geological Survey, Washington, District 

 of Columbia, has charge of the investigation concerning cement and 

 cement materials. 



The subject of abrasive materials, rare earths, gems, and mica is 

 in charge of Dr. Joseph Hyde Pratt, University of North Carolina, 

 who reports that his chapter is nearly ready for transmittal, while 

 the work on rare metals is well under way, with the exception of the 

 literature on the subject. 



The history of the development of chemical minerals is under the 

 charge of Prof. Charles E. Munroe, George Washington Universit}', 

 Washington, District of Columbia. Professor Munroe is treating the 

 subject assigned him with rare ability, and is also conducting the 

 preparation of a chapter on the influence of chemistry on the mining 

 industry of the United States. 



" The minor minerals" is a subject being treated by Mr. Ira A. 

 Williams, of the Iowa State College. He has collected much mate- 

 rial and his progress is satisfactory. 



Division IV. — Manufactures. 



As stated, I took over the work of this division from Mr. North, 

 and this necessitated some delay, but all the work outlined in the 

 last Year Book is being carried on now and will be pushed during 

 the winter, with the assistance of Dr. Victor S. Clark. 



