INDEX TO VOLUME XXI 
Untersuchengen iiber die Bildungsverhiltnisse der ozeanishen Salz- 
ablagerungen, in besondere des Stassfurter Salzlagers. By J. H. 
van’t Hoff and Associates. Review by A. D. Brokaw 
van’t Hoff, J. H., and Associates. Untersuchengen iiber die Bil- 
dungsverhiltnisse der ozeanishen Salzablagerung, in besondere des 
Stassfurter Salzlagers. Review by A. D. Brokaw 
Variations of Certain Adirondack Basic Intrusives. By William J: 
Miller : : : ; 
Variations of Glaciers. XVII. By Harry Fielding Reid 
Variations of Glaciers. XVIII 
Volcanoes and Rocks of Pantelleria, The. By Henry S. machineton 6 es 
Walcott, Charles D. Cambrian Brachiopoda. Review by S. W 
Wallace, R. C. Pseudobrecciation in Ordovician Limestones in 
Manitoba... 
Review of iamdbuch aer Mineralehemies By Cr Dedeaw: 
Washington Academy of Sciences, Journal of the. Vol. II, January— 
June, 1912. Review by E. A. S. 
Washington, Henry S. The wolemines and Rocks af Pantellena » (0535 
Watson, Thomas Leonard, Benjamin LeRoy Miller, Edward S. Berry, 
William Bullock Clark and. The Physiography and Geology of 
_ the Coastal Plain Province of Virginia. Review by E. A. S. 
Weaver, Charles E. Geology and Ore Deposits of the Index Mining 
District. Review by E. A. S. ME reerers we alia ae 
Westgate, Lewis G., and E. B. Branson. The Later Cenozoic History 
of the Wind River Mountains, Wyoming 
White River Formation of Northwestern South Dakota! Gre Bedding 
in the. By Dean E. Winchester . 
Williston, S. W. The Primitive Structure of ihe Mandible in Araphi" 
bians and Reptiles . 
The Skulls of Araeoscelis and Gites Beeeniar Reptiles 
Wilson, Morley E. The Cobalt Series; Its Character and Origin 
The Significance of Recent Developments in the Pre-Cambrian 
Stratigraphy of the Lake Superior—Lake Huron Region . 
Winchell, Alexander N. Rock Classification on Three Co-ordinates 
Winchester, Dean E. Cross-Bedding in the White River Formation of 
Northwestern South Dakota . 
Woodworth, J. Geological Expedition to Beavil and Chile, Toe8e 1900. 
Review by R. T. C. a ac 
Ziegler, Victor. ‘The Order of Crystallization in Igneous Rocks.” 
Zobel, O. J., L. R. Ingersoll and. An Introduction to the Mathematical 
Theory of Heat Conduction, with Engineering and Geological 
Applications 
