CRETACEOUS CROSS 37 



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Cretaceous topography of New England 2, 548 



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— and early Tertlar}' of northern California and Oregon ; J. S. Diller 4 



Tertiary strata of Alabama, Variations in the ; J). W. Langdon, Jr. . . 2 



Croll, James, cited on causes of changes in level 1 



length of the post-Glacial period 1 



— , Reference to theory of. 4 



Crook, A. R., Election of. 10 



CiiOSBY, F. W., cited on underground circulation 9 



Crosby, W. O., Acknowledgments to 7 



— ; Archean-Cambrian contact near Maintou, Colorado 10 



— cited on age of the Black Hills crystallines 1 



drift fragments from cape Cod 8 



baselevel plains of Cuba 7, 88 



effect of glaciers on vegetation 7, 347 



geology of the Black hills 1, 204 



glacial plateaus 8, 187 



hornblende-syenite 3, 243 



jointed structure 1, 438 



— — — oceanic sedimentation 1, 259 



origin of the veined granites 5, 280 



radiolarian earths 7, 81 



Rhode Island granite 10, 365 



rock degeneration 7 , 358 



soil color 8, 161, 162 



transported boulders in the White mountains 5, 36 



unconformities in the Black hills 1, 250 



underground circulation 9, 272 



— , Reference to work of, in Massachusetts 1, 37 



— , Titles of papers by 5, 618 ; 10, 452, 480 



Cross, J. G. , Analysis by 3, 348 



Cross, Wihtman, cited on allanite 4, 306, 307, 311 



Denver and Arapahoe formations 8, 128, 155 



laccolites 9, 231, 232, 233 



Leucite hills 8, 177 



Pikes Peak rock 6, 471 



rhyolite 5, 280 



spherulites 5, 265 ; 6, 476 



systematic relations of leucitites 8, 182 



unconformity in the Elk mountains 1, 261 



volcanic rocks 3, 17 



— ; Intrusive sandstone dikes in granite 5 



— made secretary of Petrographic section 6 



— , Photographs by 2, 619 ; 9 



— presents photographs 8, 380 



— , Reference to description of syenite by 10 



— work of 2 



— , Titles of papers by 5, G03 ; 9 



— , Work of, in the Denver region 1 



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