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NEW YORK STATE MUSEUM 



Haidinger, 423. 



Hall, J., cited, 10, 13, 27, 55, 63, 100, 140, 

 146, 150, 158, 169, 181, 185, 186, 188, 

 189, 203, 204, 205, 208, 210, 213, 215, 

 221, 223, 224, 226, 231, 248, 250, 251, 

 254, 270, 271, 273, 275, 279, 283, 291, 

 298, 299, 308, 315, 328, 355, 356, 358, 

 362, 363, 368, 372, 373, 386, 389. 390, 

 39 1 - 399- 402, 407, 408, 410, 416, 417, 

 425, 427, 428, 436, 446, 447, 452, 453, 

 463, 466, 470, 471, 472, 473, 477, 478, 

 483; mentioned, 220, 474. 



Hall, T. S., cited, 26, 142, 143, 144, 308, 

 328, 387, 437, 446, 467. 



Hallograptus, 472. 



bimucronatus, 26, 481, 482. 



See also Diplograptus bimucronatus. 

 ? mucronatus, 26. 



Hamilton, Ontario, 55, 56, 156, 158, 161, 

 162, 163, 184, 196, 204. 



Hamilton beds, 58, facing p. 66. 



Harper, G. W., cited, 142, 217, 218. 



Hartfell sbales, 36, 48, 60, 236. 



Hartnagel, C. A., mentioned, 149, 153, 

 203. 



Haug, cited, 62, 63, 64, 65. 



Hebron, 16. 



Helderbergian formation, facing p. 66. 



Helicograptus, 275. 

 gracilis, 277, 278. 



See also Coenograptus gracilis. 



Hemlock creek, 181. 



Herzer, H., mentioned, 220. 



Highland, 19. 



Hinde, cited, 457. 



Hisinger, mentioned, 424. 



Hock, H., cited, 144. 



Holland Patent, 36, T46, 211, 217, 219, 

 265, 269, 399, 400, 484. 



Holm, cited, 173, 186, 377, 464, 467, 468, 

 470. 



Holograptus, 135. 

 richardsoni, T35. 



Hopkinson, cited, ill, 210, 229, 230, 233, 

 239, 260, 273, 291, 292, 315, 382, 447. 

 458. 



Hovey, F. O., cited, 45, 142, 374. 



Hudson, 250, 370. 



Hudson River shale, 10, 64. 353. 



Huron, Lake, 387, 437. 



Hyatt, cited, /J. 



Hydrozoa, 223. 



Hymenocaris, 488. 



Idiograptus, 341. 



aculeatus, 341. 



See also Diplograptus aculeatus. 



tricornis, see Cryptograptus tricornis. 

 Illinois, 52, 372. 

 Indian Ladder, Helderberg mountain. 



455- 

 Indian Territory, 24, 41, 46, 51. 414. 440. 

 Inocaulis, 67, 127, 132, 147. 185-88, 196. 



197, 199, 202, 209, 225, 227, facing 



p'66. " 

 aculeata, 186. 



anastomoticus, 188, 198, 199, 200. 

 arbuscula, 132. 151, 152. 186, 188. 

 attrita, 186. 



bellus, 56, 132, 186. 188. 203. 

 cervicornis, 56, 132, 186. 

 diffusus, 56, 132, 186. 

 divaricatus, 52. 55, 56, 127. 132. 186. 



188. 191, 196. 

 dumetosa, 186. 

 flabcllum. 127. 132. 191. 

 musciformis, x$~, T92. 

 phycoides, 56, 132. t86. 

 plumulosus, 52. 55. 56. T27. 132, 187. 

 188-91, 192, 196, 198, 202. 204. 



explanation of plates. 492. 502. 



figure. T()0. 

 ? problematicus, 56, 132. 

 ramulosus, 56. 132. t86, too. 



SUCcica, 187. TQ2. 



walkeri, 56. 132. 186. 102. 194, 106. 



