CONTENTS OF VOLUME IV 
Lindgren, 373; Ueber das Norian oder Oberlaurentian yon Canada, 
by Frank D. Adams, 374; Relations of the Granite and Porphyry 
Areas in Southeastern Missouri, by Chas. R. Keyes, 375; Syenite- 
gneiss (Leopard Rock) from the Apatite Region of Ottawa County, 
Canada, by C. H. Gordon, 377. 
RECENT PUBLICATIONS - - = = = c = ; 2 = 
NUMBER IV. 
CLASSIFICATION OF MARINE TRIAS. James Perrin Smith - = = = 
THE GEOLOGY OF THE LITTLE Rocky MouNTAINS. Walter Harvey Reed 
and Louis V. Pirsson - - - - . - - - - 
SCHISTOSITY AND SLATY CLEAVAGE. George F. Becker - - - - 
STUDIES FOR STUDENTS: Deformation of Rocks. III. C. R. Van Hise, 
449; Large Scale Maps as Geographical Illustrations. W. M. Davis, 
484. 
EDITORIAL - - - - - - - - - - - 
REVIEWS: Expedicion Cientifica al Popocatapetl, by Jose G. Aguilera and 
Ezequiel Ordoitez (review by Oliver C. Farrington), 516; Stratigraphy 
of Kansas Coal Measures, by Erasmus Haworth; Classification of the 
Upper Paleozoic Rocks of Central Kansas, by Chas. S. Prosser ; 
Permian System of Kansas, by F. W. Cragin (review by Chas. R. 
Keyes), 520; Wissenschaftliche Ergebnisse der Finnischen Expedi- 
tionen nach der Halbinsel Kola, by Dr. W. Ramsay and others (review 
by D. P. \N.), 526. 
RECENT PUBLICATIONS : - - - = = < 2 - = 
NUMBER V. 
DECOMPOSITION OF ROCKs IN BRAZIL. Orville A. Derby - - - 
ITALIAN PETROLOGICAL SKETCHES.—I. THE BOLSENA REGION. Henry S. 
Washington - - - - = = 2 8 E E 4 
DRAINAGE MODIFICATIONS AND THEIR INTERPRETATION. Marius R. 
Campbell - - - : - = = z : 
GLACIAL STUDIES IN GREENLAND. IX. T.C. Chamberlin - - - 
STUDIES FOR STUDENTS: Deformation of Rocks, IV. C.R. Van Hise - 
EDITORIAL - = - = = = = = = - E - 
Reviews: Greenland Ice Fields and Life in the North Atlantic, with a new 
discussion of the causes of the Ice age, by G. Frederick Wright and War- 
ren Upham (review by T. C. C.), 632; Ice Work, Present and Past, by 
T. G. Bonney (review by T. C. C.), 636; General Relations of the 
Granitic Rocks in the Middle Atlantic Piedmont Plateau, by G. H. 
PAGE 
379 
514 
526 
529 
541 
567 
582 
593 
630 
