INDEX TO VOLUME XX 
Moore, E. S. Siliceous Odlites and Other Concretionary Structures 
in the Vicinity of State College, Pennsylvania . : ; , 
Morse, William Clifford. The Maxville Limestone. Review by 
A. E. F. 
Muraenosaurus ? eit, sp. nov., and rcleiduse levationctis Kenia 
American Jurassic plectoentne! By Maurice G. Mehl 
Natural Bridges in Eastern Wyoming, Some Small. By V. H. Barnett 
Newland, D. H. Notes on the Geology of the Swedish Magnetites. 
Review by H. C. C. : NOIR hy asc 58 
New South Wales, An Introduction to the Coleey oF By C. A. Siiss- 
milch. Review by R. T. C. ME cae Oe ee ee 
New York City Aqueduct, Geology of fhe: By Charles P. Berkey. 
Review by G. S. Rogers 
North Carolina Geological and Bconomic curyey, Biennial Report a 
the State Geologist, 1911. Review by H. C. C. 
Ohern, D. W. The Stratigraphy of the Older Pennsylvanian Rocks of 
Northeastern Oklahoma. Review by A. E. F. : 
Ohio Sands, The Petrographic Character of; with Relation to Tet 
Origin. By D. Dale Condit . : 
Ontario, Annual Report of the Bureau of Nines Vol. XX, Revie ay 
@uteolony, of Pteranodon. By George F. Eaton. Review by S. W. W. 
Paige, Sidney. Gravel as a Resistant Rock 
Rock-cut Surfaces in the Desert Ranges 
Pantylus cordatus Cope. By Maurice G. Mehl 
Patton, H. B. Topaz Bearing Rhyolite of the Thomas Rane: em 
Review by Harold E. Culver 
Peach, B. N., C. T. Clough, L. W. Eearar Ais ‘Ss. Giant alent C. B. 
Gmoton: H. B. Maufe, and E. B. Bailey. The Geology of the 
Neighbourhood of Edinburgh. Review by A. E. F. ; 
Peale, A. C. On the Stratigraphic Position and Age of the yadien 
River Formation : 
On the Stratigraphic position and Age a the yun Rage 
Formation. II. : : 
On the Stratigraphic Position aad Nee i the Tai River 
Formation. III : 
Renrose she Aan jie Kear Gin Mining. in New Zealand 
Permo-Carbonifereous of Northern New Mexico, The. By S. W. 
Williston and E. C. Case 
-Petrogenesis, The Fundamental Problems mp or Tike Onan of Teneous 
Rocks. By Franz Loewinson-Lessing. Review by Whitman 
Cross . 
737 
PAGE 
259 
581 
344 
438 
285 
772 
469 
286 
281 
288 
442 
362 
