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NEW YORK STATE MUSEUM 



Clear lake, 113, 127. 

 Climactichnites, 63. 



Climate, changes of, 23, 122. 



Columnaria alveolata, 84. 

 halli, 84. 



Conglomerates, 61. 



Consequent streams, 124. 



Contact amphibolites, 51-52. 



Contact rocks, 45-46, 47 ; of Antwerp, 

 bathylith, 52-53. 



Covey Hill gulf, 138. 



Cranberry creek valley, 127. 



Crosby, W. O., cited, 156. 



Crown Point limestone, 97. 



Crystal lake, 127, 132. 



Cumberland Head shale, 97. 



Curved scorings, 160-61. 



Cushing, H. P., introduction, 5-6; 

 location and character, 6-8; sum- 

 mary of geologic history, 8-22; 

 Precambric rocks, 24-54; Paleozoic 

 rocks, 54-79 ; summary of Paleozoic 

 oscillations of level, 92-99; rock 

 structures, 99-121 ; topography, 

 121-36; economic geology, 172-75; 

 petrography of some Precambric 

 rocks, 175-87; cited, 80, 143, 166; 

 mentioned, 86. 



Dalmanella testudinaria, 91. 



Day Point limestone, 97. 



Deposition, plains of, 148. 



Dexter, 136, 166, 167. 



Diabase, 24, 44-45, 54, 174- 



Dikes, trap rock, 24, 44, 174; granite, 



48. _ 

 Diopside, 29. 

 Diorite, 39. 



Dip of the Paleozoic rocks, 98-99. 

 Dolgeville, shale, 97. 

 Drainage, original, 124-25 ; Tertiary, 



125-29; underground, 133-36. 



Eaton, H. N., voluntary assistant, 6; 

 acknowledgments to, 6; photo- 

 graphs by, 57. 



Economic geology, 172-75. 



Ells, R. W., cited, 61, 67, 77- 



Emmons, Ebenezer, cited, 79, 84, 138. 



Endoceras longissimum, 88. 



multitubulatum, 88. 

 Epidote, 48, 49, 50. 

 Erosion, amount, 123-24; glacial, 



159-64; plains of, 147-48. 

 Eskers, 155-56. 

 Evans Mills, 113, 154, 160. 



Fair child, H. L., the Pleistocene, 

 23-24; Pleistocene geology, 136-72; 

 cited, 6, 98, 115, 126, 138. 



Faults, 1 1 8-2 1. 



Feldspars, 32, 33, 34, 35, 36, 38, 39, 

 40, 41, 44, 45, 46, 48, 49, 50, 51, 52, 

 64, 177, 178, 179, 180, 181, 183, 184. 



Felts Mills, 133, 134, 135, 143, 154. 



Folds, 108-18; postglacial, 11 5-18. 



Foliation, 99-103. 



French creek, 113, 114, 150. 



Frontenac axis, 95, 113, 126. 



Gabbros, 24, 44. 



Gananoque, 45. 



Garnet, 33, 34, 35, 48. 



Geologic history, summary of, 8-22. 



Gilbert, G. K., acknowledgments to, 

 117; cited, 117, 138. 



Gilbert gulf, 24, 138-40. 



Glacial deposits, 7, 150-56. See also 

 Pleistocene. 



Glacial erosion, 159-64. 



Glacio-aqueous deposits, 156-59, 



Gneisses, 35, 39, 40, 42, 43, 55, 58. 

 See also Laurentian granite gneiss. 



Gneissic granites, 36-38. 



Gonioceras anceps, 84, 87, 88, 90. 



Goose bay, 55. 



Grabau, cited, 67, 78. - 



Granites, 24, 30, 36, 48, 49, 50, 55; 

 action on amphibolite and quart- 

 zite, 47; analyses, 176; bleaching by 

 limestone, 46; bleached, analyses, 

 177-80; gneissic, 36-38; gradation 

 into quartzite, 47; quarries, 174; 

 red, 46, 179; white, 46. See aiso 

 Picton granite. 



Granite gneiss, 10, 12, 24, 33, 43, 48, 

 58; analyses, 176; foliation of, 

 101-2. 



Graphite, 29, 35, 53. 



