170 



New York State Museum 



Iddings, J. P., cited, 32. 



Ilmenite, 56, 61, 138, ^39, 140, 142, 

 143, 144, 145, 146, 148; occur- 

 rence, 157. 



Iron industry, historical outline, 

 98-99. 



Iron mountain, 14, 148. 



Iron ores, 97-149; analyses, lOQ, 

 loi, 104, 118, 119, 142, 143, 144, 

 145, 146. See also Magnetite. 



Isotelus harrisi, 69, 70, 71. 

 obtusus, 70. 



Jackson brook, 150. 



Jasper, occurrence, 157. 



Joker mine, ti6. 



Jouet, C. A., analyses by, 37, 40. 



Kalm, Peter, notes on local 



geology, 8; cited, 163. 

 Kaolin, 33, 37, 40, 43, 50, 56, 62, 



140, 145. 

 Keeseville, 64. 

 Kemp, J. F., analyses by, 147; 



cited, 18, 32, 49, 62, 67, 74, 89, 



102, 159, 163. 

 Kent mine, 144. 

 Kingdom, 141. 

 Kingdom Works, 148. 

 Kolderup, C. F., cited, 49. 



Labradorite, 29, 31, 3S, 39, 43, 54» 



80, 87, 142, 155. 

 Lake Champlain, surface lowest 



point within area, 11; depth, 12. 

 Lanthanite, occurrence, 157. 

 Larsen, E. S., cited, 130. 

 Ledge hill mines, 140-41. 

 Lee mine, 97, 98, 100. 

 Leeds, A. R., analyses by, 60; 



cited, 32. 

 Le Fevre, S., acknowledgments 



to, 105; mentioned, 146. 

 Leperditia canadensis, 69, 70. 



fabulites, 73. 



limatula, 69, 70, 71. 

 Lesley, J. P., cited, 164. 

 Limekiln mountain, 84. 

 Limestone, 149-52. 

 Lincoln pond, 18, 141, 147, 148; 



pit near, 144-45. 



Lingula sp.^ 69. 



brainerdi, 69, 71. 

 Little pond, 87, 148; pits near, 



143-44- 

 Loon Lake, 44. 

 Lophospira sp. ind., 70. 



perangulata, 70. 

 Lossing, B. J., cited, 10. 

 Lowville limestone, 72. 



Macadam, 149-51. 



McComb, altitude, 12. 



Mclntyre, altitude, 12. 



McKenzie brook, 63, 64, 90, 149. 



Maclureas, 71. 



Ivlaclurites, 66. 

 logani, 73. 

 magnus, 8, 69, 70, 71. 



Magnetite, 28, 31, 33, 37, 40, 43, 

 47, 48, 50, 51, 52, 53, 54, 55, 56, 

 60, 61, 62, 87, 122, 123, 125, 130, 

 133, 140, 142, 143, 144, 145, 146, 

 148; occurrences, 157-59; 

 nontitaniferous: 99-137; geologi- 

 cal relations, 122-25; origin of 

 the ore, 126-32; 



titaniferous: 97, 137-49; commer- 

 cial value, 147. 



Mangerite, 49. 



Marble, serpentinous, 151. 



Marcy, altitude, 12. 



Marsters, V. F., cited, 74, 164. 



Matthew. W. D., cited, 67. 



Maynard, G. W., analyses by, 139, 

 143, 147; cited, 164. 



Merrill, G. P., cited, 23, 160, 164. 



Metamorphosed eruptives, 25-26. 



Microcline, 26, 27, 123, 159. 



Microperthite, 27, 46, 49, 51, 52, 

 loi, 123. 



Mill brook, 16, 27, 96. 



Miller ore body, 106, 114. 



Mineralogy, 152-62. 



Mineville, 11, 79, 93, 96, 97, 98, 

 103, 127, 130, 134, 141, 146. 



Mineville group, 105-19. 



Molybdenite, occurrence, 159. 



Monotrypella sp., 70. 



Moraines, 93-94. 



Morehouse, Frank, cited, 135. 



