6o 



NEW YORK STATE MUSEUM 



Gneissic structure, 36-37. 



Gomery hill; 8. 



Goulds Mill, 20. 



Granitic syenite gneiss, 15-18. 



Graphite, 10, 11. 



Gravels, 7, 57. 



Greig, 14, 19,. 52, 53- 



Grenville gneiss, 6, 9-12, 15, 36; 

 sedimentary origin, 10; alternat- 

 ing layers, 10. See also Syenite- 

 Grenville mixed gneisses. 



Gulfs, origin of, 55. 



Gulliver, cited, 54. 



Hall, cited, 27, 50. 



Hawkinsville, 13, 41, 45, 55. 



Hematite, 17. 



Highmarket quadrangle, 34. 



Honnedaga, 54. 



Hornblende, 11, 13, 14, 16, 17, 20, 21. 



House creek, 9, 30, 31, 55. 



Houseville, 30, 32, 52. 



Hudson River group, 32. 



Hurlbutville, 54. 



Hypersthene, 12, 20-21. 



Ice erosion, 46^55. 

 Igneous rocks, 6, 

 Independence river, 8. 

 Ingham Mills, 31. 

 Iron ore, 57. 

 Iron pyrites, 58. 



Jefferson county, 18. 



Kames, 52-53. 



Kemp, mentioned, 40. 



Kosterville, 9, 10, 15, 19. 



Labradorite, 11, 20. 



Lake Iroquois, 54. 



Lansing kill, 54. 



Lead ore, 58. 



Leptaena sericea, 2>2>- 



Leucoxene, 11, 



Lewis county, 34. 



Limonite, 34. • 



Little Falls, 24, 28, 32, 42, 43. 



Little Falls district, 10, 30, 43. 



Little Falls quadrangle, Precambric 



altitudes, 47. 

 Little Otter lake, 51. 

 Locust Grove, 30, 31, 32, 35. 

 Long Lake quadrangle, 45. 

 Loon lake, 14. 

 Lorraine (town), 34. 

 Lorraine shales and sandstones, 7, 



32-34, 47, 55, 57; thickness, 53, 34. 

 Lowville (town), 46, 53, 55. 

 Lowville limestone, 7, 25-27, 47, 56, 



57 ; ripple marks, 2^. 

 L3'ons Falls, 8, 14, 18, 19, 20, 22, 24, 



27, 2>(y-Z7, 41, 45, 46, 47, 52, 54- 

 Lyonsdale, 9, 11, 13, 15, 19. 



Magnetite, 11, 14, 17, 20, 21, 57, 58. 

 Martinsburg, 22, 30, 35, 43, 45, 50, 



52, 57, 58. 

 Microcline, 19, 20. 

 Microperthite, 11, 14, 15, 17, 20, 21, 



58. 

 Middleville, 31. 



Mill creek, 9, 24, 27, 30, 31, z^, 55- 

 Miller brook, 13, 18, 20. 

 Modiolopsis modiolaris, 33. 

 Mohawk hill, 31, ZZ, 52, 53- 

 Moose creek, 31, 32. 

 Moose river, 8, 10, 11, 12, 13, 51, 55. 



Natural Bridge, 18. 



Newland, D. H., mentioned, 10. 



Oligoclase, 11, 14, 17, 20, 58. 



Ontario, Canada, 16. 



Orthis testudinaria, 2)3- 



Orthoclase, 12. 



Orton, cited, 21, 35, 2)7> 39, 42- 



Orwell, 2,7- 



Oswego county, 21, 31, 32, 2>7, 42. 



Oswego sandstone, 33, 34; thickness, 



34. 

 Otter creek, 8, 17, 51. 



Paleozoic overlap, 37-39. 

 Paleozoic rocks, 6, 21-34; thickness, 



21; dip, 34-35. 

 Pamelia limestone, 21-24, 35, 47, 56; 



thickness, 24; ripple marks, 36. 



