BROADHEAD — HIST. MEMOIR OF MISSOURI GEOL. SURV. 01 7 



the Illinois survey. C. J. Norwood was a son of J. G. Norwood, 

 and was afterwards connected with the Kentucky geological 

 survey. 



In the fall of 1871 G. C. Broadhead with C. M. Litton made 

 surveys in Madison county, and later in the season examined the 

 geological structure and working coal mines near the line of the 

 Missouri Pacific railroad 'from Sedalia to Kansas City. 



In 1872 G. C, Broadhead, assisted by C. J. Norwood, studied 

 the general geology of Northwest Missouri, making vertical sec- 

 tions of Missouri river blufl's from Brunswick to the north-west 

 corner of Missouri and for 80 miles east. 



Prof. W. B. Potter, assisted by Alex. Leonhard, made a sur- 

 vey of Lincoln county. 



Prof. Pumpelly and others made a topographical survey of Iron 

 Mountain, Pilot Knob and vicinity, and carefully studied the re- 

 lations of the porphyries and related rocks with the ore deposits. 



Dr. Schmidt studied the distribution and mode of occurrence 

 of the iron ores and iron metallurgy of the State. 



In May, 1873, Prof. Pumpelly resigned, and in June G. C. 

 Broadhead was appointed State Geologist. 



The geological corps during 1873 were — 



G. C. Broadhead, State Geologist; 

 Dr. A. Schmidt, Assistant Geologist; 

 Regis Chauvenet, Chemist; 

 Chs. J. Norwood. Assistant Chemist. 

 Alex. Leonhard, P. N.Moore, and H. H. West, Assistants. 



T.J. Caldwell, in the office. 



C. Henrich, Topographer. 



During the latter part of 1873, Schmidt, Norwood, Caldwell, 

 and West, were the only assistants employed. 



In 1S73 P. N. Moore made a special examination of the chief 

 limonite deposits of South-east Missouri. J. R. Gage examined 

 certain lead mines in South-east Missouri. Dr. Schmidt, assisted 

 by Leonhard, made careful examinations of the lead districts of 

 Newton and Jasper. Messrs. Leonhard and Henrich made a 

 topogi-aphical survey of the Granby lead mines. G. C. Broad- 

 head, assisted by C.J. Norwood and H. H. West, made surveys 

 in Jasper, Cedar, Barton, Vernon, and Bates ; and later in the 

 season made surveys in Howard, Linn, Adair, and Sullivan. 



In 1874 Dr. Schmidt made careful examinations of the lead 



