INDEX TO VOLUME XXV 795 



PAGE 



Iditarod-Ruby Region, Alaska, The. By Henry M. Eakin. Review 



by V. O. T ' . I99 



Igneous Rocks, Suggestions for a Quantitative Mineralogical Classifica- 

 tion of. By Albert Johannsen 63 



Internal Friction and Limiting Strength of Rocks under Conditions of 

 Stress Existing in the Interior of the Earth, On the Mathematical 

 Theory of the. By Louis Vessot King 638 



Internal Friction, On the Amount of, Developed in Rocks during 

 Deformation and on the Relative Plasticity of Different Types of 

 Rocks. By Frank D. Adams and J. Austen Bancroft . . . 597 



Intraformational Pebbles in the Richmond Group, at Winchester, Ohio. 



By August F. Foerste . 289 



Isostasy, On the Hypothesis of. By W. D. MacMillan . . . . 105 



Isostasy, Our Present Knowledge of, from Geodetic Evidence. By 



William Bowie 422 



Japan, On the Volcanoes of. By B. Koto. Review by Albert Johann- 

 sen 780 



Jaw of the Piltdown Man, The. By Gerret S. Miller, Jr. Review by 



H. R. B 59 6 



Jennison, William F. Gypsum Deposits of the Maritime Provinces. 



Review by W. B. W 100 



Johannsen, Albert. Petrological Abstracts and Reviews. 492, 587, 779 



. Review of Mineralization in the Contact Metamorphic Ore 



Deposits of the Ofuku Mine, Prov. Nagato, Japan, by Takeo 

 Kato 780 



■ — — ■ — . Review of Nephelite-Syenites of Haliburton County, Ontario, 



by Wilbur G. Foye 779 



— — ■ — . Review of On the Volcanoes of Japan, by B. Koto . . . 780 



. Review of Petrographic Evidence on the Origin of the Cata- 

 houla Sandstone of Texas, by Marcus I. Goldman .... 780 



. - Review of Petrological Notes on the Igneous Rocks of the 



Oki Islands, by S. Kozu 781 



. Review of Report of an Excursion to the Lizard, Cornwall, 



by J. S. Flett and J. B. Hill . . 779 



. Review of The Geology of the Lizard, by J. S. Flett . . . 779 



. Review of The Geology of the Lizard arid Meneage, by J. S. 



Flett and J. B. Hill . . . 779 



. Review of The Manhattan Schist of Southeastern New York 



State and Its Associated Igneous Rocks, by Charles Reinhard Fettke 593 

 Suggestions for a Quantitative Mineralogical Classification of 



Igneous Rocks 63 



Jones, Fayette A. Mineral Resources of New Mexico. Review by 



A. D. B 399 



Kato, Takeo. Mineralization in the Contact Metamorphic Ore 

 Deposits of the Ofuku Mine, Prov. Nagato, Japan. Review by 

 Albert Johannsen 780 



