16 rKOCEEDlXclS OF THE ANN ARBOK MEETING 



School of Klines and ^letallurgv as Assistant Professor of Mineralogy and 

 Petrography in 190i). In liUl he was made Professor of Geology and 

 ^lineraloiiv, and occupied that chair until 11^20. when he resio-ned to ^o 

 into consultiuii- iietroleum aeoloiiv. 



The WDrk of Doctor Cox for tlie School of Klines is particularly note- 

 wortliy for the tine organization of the departnuMit that he brought about. 

 lie was an ambitious and tireless worker antl made his department a 

 recognized force in the school. 



Doctor Cox liad a wide field experience, beginning in 1904 with a 

 season in soutliAvestern Wisconsin for the Geological and Xatural History 

 Survey of that State. The summer of 190G was spent, under the super- 

 vision of Doctor U. S. Grant. Avlth a party in Wyoming. The summer 

 of 1907 was spent in engineering and exploration work in Alaska, includ- 

 ing a study of Alaskan tin deposits and also involving extensive sampling 

 of Xome placer deposits. 



In 1908 he was engaged with the Wisconsin Survey in the zinc and 

 lead district, and the two following seasons with the Illinois Survey in 

 working out the origin of the lead and zinc deposits of the upper Missis- 

 sippi Valley. During 1911 he served as engineer for the Wisconsin Zinc 

 Company. This work resulted in the publication of two of his most im- 

 portant contributions to geological literature : ^'The origin of the lead 

 and zinc deposits of the upper Mississippi Valley district." Economic 

 Geology, volume 6, number 5, 1911, and ^*Lead and zinc deposits of north- 

 western Illinois." Illinois Geological Survey, Bulletin 21. 1914. In these 

 })apers he advances the theory that the sulphides of zinc and lead were 

 first deposited from the sea, in disseminated form, in the highly organic 

 Maquoketa shale, and that as this formation was removed by erosion, 

 descending cold solutions redeposited the ores where they now occur. 



Doctor Cox also spent one summer prospecting in the vicinity of Trout 

 Creek, Montana. More recently his held activities were devoted almost 

 exclusively to petroleum exploration. These activities began with an ex- 

 tensive trip, designed primarily to secure data on which to Iniild up a 

 course in petroleum geolog}' in the School of ^Mines. This trij) involved 

 visits to Wyoming, California, Texas, Louisiana. Oklahoma, and Kansas. 

 During the college year of 1916-1917 he was on leave and maintained 

 consulting offices in Tulsa, Oklahoma, under the name of Cox & Radcliffe. 

 As a result of his extensive held-work in petroleum geology, he invited 

 the other members of his department to cooperate with him in the prepa- 

 ration of a treatise on ''Field methods in petroleum geology,"' his experi- 

 ence leading him to feel that there was a real place for such a work. This 

 appeared as a McGraw-Hill publication in 1921. 



