28 PROCEEDINGS OF THE PHILADELPHIA MEETING 



able services for the Minnesota Historical Society on the archeology and 

 ethnology of this State and the iSTorthwest. 



During a year, in 1869-1870, he was an assistant to Prof. Alexander 

 Winchell on the Geological Survey of Michigan, and later in 1870 he 

 visited and reported on the copper and silver deposits of New Mexico. 

 In 1871 he assisted Prof. J. S. Kewberry, the State geologist of Ohio, 

 surveying and reporting on twenty counties in the northwestern part of 

 tliat State. 



In Julv, 1872, N". H. Winchell was invited bv President William W. 

 Folwell, of the University of Minnesota, to take up the work then recently 

 ordered by the legislature for a survey of the geology and natural history 

 of this State, to be done under the direction of the Board of Eegents of 

 the University. In this work he continued twenty-eight years, until 1900 ; 

 and during the first seven years, until 1879, he performed also the full 

 duties of the university professorship of geology. Later he relinquished 

 teaching, aside from occasional lectures, and gave all his time to the 

 diversified duties of the State survey and the curatorship of the university 

 museum. 



In the su miner of 1874 Professor Winchell accompanied General Cus- 

 ter's expedition to the Black Hills, lu'ought back many valuable additions 

 for the museum, and prepared a report which contains the first geological 

 map of the interior of the Black Hills. 



In 1873 he was one of the organizers of the Minnesota Academy of 

 Natural Sciences, which he served during three terms as president, and 

 he continued as one of its most active members throughout his life. 



He was a Fellow of the American Association for the Advancement of 

 Science and presided over its geological section at the Philadelphia meet- 

 ing in 1884. He was one of the chief founders of this Geological Society 

 of America, in 1889, and was its president in 1902. He was a member 

 of national societies of mineralog)^ and geology in France and Belgium. 

 In the International Congress of Geologists he became a member in 1888, 

 l:)eing reporter for the American Committee on the nomenclature of the 

 Paleozoic series ; contributed papers in French to its subsequent meetings 

 at Boulogne and Zurich, and attended its triennial meeting of August, 

 1913, in Toronto. 



Under appointment by President Cleveland in 1887, Professor Win- 

 chell was a member of the United States Assay Commission. His geo- 

 logical reports received a diploma and medal at the Paris Exposition of 

 1889 and a medal at the World's Fair in Chicago in 1893. 



TIo was the chief founder of the American Geologist, a monthly maga- 

 zine, wliich was published in Miniicajiolis. under liis editorship, during 



