764 INDEX TO VOLUME XIX 



PAGE 



Girty, George H., C. H. Gordon, and David White. The Wichita 



Formation of Northern Texas . . . . . . .110 



Gordon, C. H., George H. Girty, and David White. The Wichita 



Formation of Northern Texas . . . . . . .110 



Gordon, Charles H., Waldemar Lindgren, and Louis C. Graton. The 



Ore Deposits of New Mexico. Review by W. H. E. . . '. 276 



Grabau, A. W., and W. H. Sherzer. The Monroe Formation of South- 

 ern Michigan and Adjoining Regions. Review by S. W. . . 664 

 Grabau, Amadeus W., and Hervey Woodburn Shimer. North American 



Index Fossils: Invertebrates. Review by S. W. . . . 470 



Grabham, G. W. An Improved Form of Petrological Microscope; 



with Some General Notes on the Illumination of Microscopic 



Objects. Review by W. T. Schaller ...... 182 



Grandjean, F. Sur un mesure du laminage des sediments (calcaires et 



schistes) par celui de leurs cristaux clastiques de tourmaline. 



Review by F. C. Calkins ........ 464 



Graton, Louis C, Waldemar Lindgren, and Charles H. Gordon. The 



Ore Deposits of New Mexico. Review by W. H. E. . . . 276 



Gravel as a Resistant Rock. By John Lyon Rich .... 492 

 Grayson, H. J. Modern Improvements in Rock Section Cutting 



Apparatus. Review by Albert Johannsen . . . . .183 



Greene, F. C. The Dakota-Permian Contact in Kansas. Review by 



E. R. L 382 



Groth- Jackson. The Optical Properties of Crystals. Review by 



Albert Johannsen ......... 464 



Grout, Frank F. The Composition of Some Minnesota Rocks and 



Minerals. Review by Albert Johannsen . . . . .183 



Gypsum Deposits of New York. By D. H. Newland and Henry 



Leighton. Review by E. R. L. . . . . . . 576 



High Terraces and Abandoned Valleys in Western Pennsylvania. By 



Eugene Wesley Shaw . . . . . . . .140 



Hobbs, William H. Requisite Conditions for the Formation of Ice 



Ramparts . . . . . . . . . .157 



Hogbom, A. G. Ueber einen Eisenmeteorit von Muonionalusta im 



nordlichsten Schweden. Review by W. T. Schaller . . . 184 



Howe, J. Allen. The Geology of Building Stones. Review by Albert 



Johannsen .......... 465 



Hubbard, George D. Large Glacial Bowlders . . . . -377 



Humphreys, Edwin W., and Alexis A. Julien. Local Decomposition 



of Rock by the Corrosive Action of pre-Glacial Peat -Bogs . . 47 



Hyde, Jesse E. The Ripples of the Bedford and Berea Formations of 



Central and Southern Ohio, with Notes on the Paleogeography of 



that Epoch .......... 257 



