MUSEUM OF COMPARATIVE ZOOLOGY. 27 



REPORT OX THE GEOLOGICAL COLLECTION. 



By Robert W. Sayles. 



During the past year there have been few additions to the col- 

 lections. From the Boston Society of Natural History we have 

 received in exchange twenty-seven specimens illustrating dynam- 

 ical and structural geology. No better exhibition specimens have 

 ever come to the Museum. About thirty specimens illustrating 

 seasonal deposition in glacial slate have been placed on exhibition. 

 We are grateful to Professor Palache for a section of a fossil tree 

 from Clover Creek, Idaho. 



Most of the time during the fall and winter was spent in writing 

 a memoir on Seasonal deposition in aqueo-glacial sediments. 



The specimens in the collection are as follows: 



Dynamical and Structural Geology, and Geography; 



Specimens on exhibition 

 Specimens in trays, (reserve) 



Models on exhibition 

 Models in storage 

 Wooden structural models 

 Maps on exhibition 

 Photographs on exhibition 

 Transparencies 



Economic Geology; 



Specimens on exhibition 

 Specimens in trays, (reserve). 



Total specimens 



Total specimens on exhibition 

 Total specimens in storage 



2155 





1460 



3615 



28 





14 





16 





17 





280 





12 





1721 





514 



2235 





5850 



- 



3876 





1974 



