20 



logical material was received from the Museum as a gift or in 

 exchange. 



A collection illustrating typical fossils of the New York State 

 rocks was received from the New York State Museum, at Albany, 

 through the kindness of Professor John M. Clarke. For this 

 collection an exchange will be returned. Thanks are due to Mr. 

 H. L. Jones for a collection of fossils illustrating the Waverly 

 Group of Ohio. Considerable material was purchased from 

 Ward's Natural Science establishment at Rochester, and ma- 

 terial was obtained by purchase, exchange, or gift from several 

 other sources. 



The thanks of the Department are due to Miss Mary L. Ware, 

 of Boston, who generously gave one hundred dollars to the 

 Palaeontological section. With this recent gift much important 

 material has been purchased. 



A few necessary palaeontological books were purchased for the 

 laboratory. Thanks are due for a number of technical papers 

 received from their authors. Especially to be mentioned are 

 nearly complete sets of their publications, given by Professor 

 Alpheus Hyatt, and Dr. E. C. Beecher of New Haven. 



Arrangements have been made to employ the electric arc-light 

 with a magic lantern in the Geological Lecture Room, in place of 

 the gas-light heretofore used. By the transfer of a number of 

 duplicates of government geological reports from the Museum 

 Library to the Department, means have been provided for per- 

 fecting the preparation of theses in Geology 8, the books being 

 at present reserved for the use of students in this course. During 

 the year, the usual number of rock specimens were added to the 

 teaching collection to replace worn or undesirable material. 



The work of cataloguing the collection of photographs belonging 

 to the department was advanced by Mr. J. V. Lewis. Through 

 the generosity of Mr. J. L. Gardner, the department has a fund of 

 $5,500 devoted to the augmentation and care of this means of in- 

 struction, which it has been voted by the Corporation to call the 

 " Gardner Collection of Photographs." 



During the winter and early spring much time was given by the 

 officers of the Department to the preparation of exhibits of our 

 means of instruction for the World's Columbian Exposition at 

 Chicago. A special edition of the General Account of the Depart- 

 ment has been issued, in which these exhibits are fully described. 

 The preparation of this exhibit has made felt the want of illus. 



