1911] Teller, Fossils from the PalcBOzoic Formations. 171 



state, the men whose efforts as collectors have made this possible, 

 those who have made the descriptions, the publications in which 

 the most of these descriptions and the figures were published, and 

 what constitutes a type with such notes as might be proper to 

 present without burdening you with an endless list of scientific 

 names in which you may have little interest and which possibly 

 in many cases would be meaningless. 



I. COLLECTORS. 



The collectors of fossils from the geological formations in the 

 state of Wisconsin, who have aided the specialists with material 

 for their work, may be said to have commenced with the late I. A. 

 Lapham, who from his collections in the early sixties furnished 

 Prof. James Hall with many specimens. Prof. Lapham had made 

 extensive collections in eastern Wisconsin, which were very freely 

 distributed to interested persons, retaining very little of anything 

 for himself ; although he was the director of the state geological 

 survey during the years 1873 and 1874, and thus had unusual 

 opportunities for collecting, he still continued to part with his 

 material and the few specimens left to the members of his family 

 were finally presented by them to the Milwaukee Public Museum. 



Dr. F. H. Day, formerly of Wauwatosa, Wis., a very extensive 

 collector from the Niagara formation at that locality, also fur- 

 nished Prof. Hall with much valuable material for his early works. 

 The very large collection of his early life was disposed of to Prof. 

 Louis Agassiz in the early seventies and is now deposited in the 

 Cambridge Museum of Harvard College ; very little of it has ever 

 been unpacked for the lack of space to exhibit, although it con- 

 tains a very large amount of valuable material. A second small 

 collection was added to the Greene collection, while the collection 

 made during the last few years of his life is still in the possession 

 of members of his family at Lansing, Mich. 



