REPORT OF DIRECTOR AND STATE GEOLOGIST 1900 rl85 



unknown to the Xew York faunas. The work has also supplied 

 the museum with a yery complete representation of the fauna, 

 which heretofore was yirtually unrepresented in the state 

 collections. 



Areal survey of the Olean and Salamanca quadrangles. In 

 cooperation with the U. S. geological suryey, stratigraphic work 

 was done in the area represented on the Olean quadrangle of 

 the topographic suryey. This work w^as in charge of L. C. Grlenn 

 of the IT. S. suryey and Charles Butts of Alfred, who was the 

 representatiye of this department and has been specially con- 

 cerned in the careful collection of the fossils of the area. The 

 field work was brought to a close before the end of the season 

 and measures haye been taken for the immediate elaboration of 

 the results acquired. 



Chemung section in Chautauqua county. Dr H. F. Cleland of 

 Cornell uniyersity was engaged for a part of the season in study- 

 ing the deyelopment of this series in the higher land of Chautau- 

 qua county. 



Fauna of the Waterlime in central New York. For some years 

 past study has been made in this office of the character of the 

 Waterlime beds throughout the state with special reference to 

 the constitution of, and the yariations in their faunas. In con- 

 nection ^ith this work special studies haye been made during 

 the past season and large collections acquired from localities in 

 the town of Litchfield, Herkimer co. These haye been an import- 

 ant contribution to the museum collections, and they embody a 

 yery considerable amount of facts which on elaboration will 

 make a substantial addition to our knowledge. 



Hudson River slates in the vicinity of Albany and their taxonomic 

 relations. The inyestigation of this problem has been carried 

 forward by Dr K. Euedemann. During the present season the 

 examination of the formation has been extended to localities to 

 the north of Albany, and the outcome of the entire work, which 

 has been presented for publication as a bulletin of the museum, 

 is to establish the subdiyision of this great formation into its 

 proper 'beds wdth their respective faunas. Special features 



