220 THE JOURNAL OF GEOLOGY. 



pages on the Coals of the state, by the writer, has been issued, 

 but a great bulk of additional information has been gathered for 

 a final report. The field work for the report on Clays was 

 finished last year, and the report, by Prof. H. A. Wheeler, is 

 now well advanced. A report on the Iron Ores of 391 pages, 

 by Frank L. Nason, was published in 1892, together with one of 

 280 pages on the Mineral Waters, by Paul Schweitzer. The 

 building stones were studied first by G. E. Ladd and later by 

 Hiram Philips, but the field work is not yet completed, and had 

 to be suspended this year. The crystalline rocks were studied 

 by Erasmus Haworth and the report is written, but is withheld 

 from publication for lack of funds. Field work for a prelimi- 

 nary report on the glacial geology, by J. E. Todd, was com- 

 pleted last year, and the report will soon be ready for transmis- 

 sion. An exhaustive review of the paleontology of the state by 

 Charles R. Keyes is ready for publication. All available data 

 relating to the hypsometry of the state have been collected and 

 tabulated, and a few months additional work will put them in 

 shape for publication. Along with the prosecution of work on 

 these general subjects, many additional facts for more exact and 

 detailed geological mapping have been collected ; but in addi- 

 tion to this, mapping of the formations has been specially done 

 over certain important areas of the southwestern and northeast- 

 ern portions of the state. 



For the Area or Sheet reports, fifteen sheets have been pre- 

 pared, distributed over the central portion of the state along the 

 margin of the Coal Measures, over the southwestern lead and 

 zinc district, and over the southeastern lead district and Archean 

 area. These sheets are on a scale of one mile to the inch with 

 a twenty-foot contour interval, and cover each a quadrilateral 

 of fifteen minutes of latitude and longitude. They include, in 

 addition to the topography and general geology, much detail of 

 special economic importance. Three of these sheets have been 

 engraved, and the accompanying reports printed. The others 

 are about ready for the engraver, and the reports are partly 

 prepared. 



