GEOLOGICAL SURVEYS IN MISSOURI. 221 



Summarizing the official publications of the Third survey to 

 date they are as follows : 

 Reports published: 



Vol. I. A Preliminary Report on Coal, 8vo, 226 pages; 

 Vol. II. Report on Iron Ores, 8vo, 391 pages ; Vol. III. 

 Report on Mineral Waters, 8vo, 280 pages ; Five Bulletins, 

 including a Bibliography of the Geology of Missouri, and arti- 

 cles on the coals, building stones and clays, mineral waters, 

 crystalline rocks, and paleontology, aggregating 470 octavo 

 pages. Also two administrative Biennial Reports aggregating 

 go pages. 



Three sheets and accompanying reports as follows : No. I. 

 Higginsville Sheet and large folio report, 18 pages; No. II. 

 Bevier Sheet and octavo report, 90 pages; No. III. Iron 

 Mountain Sheet and octavo report, 96 pages. 

 Reports completed but not published: 



Report on Paleontology, 400 8vo pages (estimated); Report 

 on the Crystalline Rocks, 300 pages (estimated). 

 Reports nearly completed: 



Re.port on Lead and Zinc Deposits, 500 8vo pages (esti- 

 mated); Report on Clays, 400 8vo pages (estimated); Report 

 on Quaternary Geology, 150 8vo pages (estimated); Report on 

 Hypsometry, 150 8vo pages (estimated). 

 Reports only partly prepared: 



Final Report on the Coal Measures ; reports on twelve 

 sheets of detailed mapping. 



Arthur Winslow. 



