174 Bulletin Wisconsin National History Society. [Vol. 9, No. 4. 



of the formations in Wisconsin are partly in the collection of the 

 state at Madison, Wisconsin, and part of them in the University 

 of California. 



The new species of Crinoids from the Hamilton formation near 

 Milwaukee, published by Prof. Weller of the University of Chi- 

 cago, in the Annals of the New York Academy of Science, volume 

 XI, 1898, are in a private collection in Milwaukee, while the types 

 of the fish remains from the same formation and locality described 

 and figured by Prof. C. R. Eastman, of the Museum of Compara- 

 tive Zoology, Cambridge, Mass., in the American Naturalist for 

 1898, and in Memoir ten of the New York State Museum, on the 

 Devonic Fishes of the New York formations are in private collec- 

 tions in Milwaukee. The types of a few of the plant remains, also 

 from the Hamilton formation at Milwaukee, were published and 

 figured by Prof. Penhollow in the Bulletin of the Wisconsin 

 Natural History Society, part one, 1908, and are now a part of the 

 Monroe collection in the Milwaukee Public Museum. 



A few other types have been described and figured in many 

 other scientific publications and are now to be found in the collec- 

 tions of the Smithsonian Institution, the Geological and Natural 

 History Survey of Minnesota, and in several private collections. 



There is shortly to be published by the State of Wisconsin, a 

 work upon the fossils of the Hamilton formation at Milwaukee, by 

 Prof. Cleland of Williams College, which will add materially to 

 the types in several collections made from that locality. 



III. NOMENCLATURE OF TYPES. 



In 1853 Louis Agassiz wrote of the importance of type speci- 

 mens in a review of a proposed catalogue of the Cabinet of Nat- 

 ural History of the State of New York. He says, "the regents of 

 the university deserve great credit for directing the publication of 



