INDEX 



Acknowledgments for materia] 



used, 20-33. 

 Adirondack crystallines, 11. 

 Agriculture, report on, 10. 

 Albany county, agricultural and 



geological survey, 5. 

 Albany institute, action in regard to 



a geologic survey, 5. 



Beck, Lewis C, assistance in early 

 geologic survey, 5; appointment 

 as mineralogist, 8. 



Bien, Julius & Co., lithographic 

 work, 19. 



Bishop, I. P., credit for material 

 used, 14, 20; manuscript maps, 33. 



Blake, geologic work, 13. 



Botanist, appointment, 8. 



Boyd, George W., appointed assist- 

 ant in geology, 8. 



Brainerd, credit for material used, 

 13, 14. 



Briggs, Caleb, appointed assistant 

 in geology, S. 



Cambrian, mapping of, 14. 

 Canada, geologic map, 17. 

 Carboniferous, 15. 



Clarke, John M., appointed state 

 paleontologist, 10; credit for ma- 

 terial used, 14, 15, 20, 22; on age 

 of Helderberg limestone, 14, 33; 

 manuscript map, 32; classification 

 of Oneonta, Ithaca, and Portage 

 formations, 34. 



Classification of rocks, table show- 

 ing progress made in, facing p. 34. 



Color scheme, 20. 



Connecticut, list of authorities for, 

 32. 



Conrad, T. A., appointment as geol- 

 ogist, 8; appointed paleontologist, 

 9; resigned as paleontologist, 9. 



Counties of New York, list of an- ; 

 thorities, 28-32. 



' Crystallines, of Adirondacks, 11; of 

 southeastern New York, 12. 

 Cumings, E. P., credit for material 



used, 20, 27. 

 dishing, II. T., study of Adiron- 

 dack area, 11; credit for material 

 used, 14, 15, 20, 22, 23; manuscript 

 maps, 33. 



Dale, T. X., credit for material 



used, 13, 20, 23. 

 Dana, J. D., work on pre-Cambrian 

 and metamorphic rocks, 12; geo- 

 logic work, 13; credit for material 

 used, 13, 20, 23. 

 Darton, N. H., credit for material 

 used, 14, 15, 20, 24; manuscript 

 maps, 33. 

 Davis, W. M., credit for material 



used, 14, 20. 

 De Kay, James E., appointed state 



zoologist, 8. 

 Devonian, lower, 14-15; upper, 15. 

 Dix, John A., report in regard to 



geologic survey, G. 

 D wight, W. B., credit for material 

 used, 13, 20; manuscript map, 33. 



Eaton, Prof., agricultural and geo- 

 logic survey of Rensselaer and 

 Albany counties, 5; agricultural 

 and geologic survey of district 

 adjoining the Erie canal, 5. 

 Eckel, E. Q., geologic work, 13; 

 credit for material used, 14, 15, 

 20; assistance in adjustment, 19. 

 Eights, James, appointed assistant 



in geology, 8. 

 Emerson, credit for material used, 

 13. 



Emmons, Ebenezer, appointment as 

 geologist, 8; report on agriculture, 

 10; on Adirondack crystallines, 

 11; on rocks of the Tnconie range, 

 10, 13. 



