2 GEORGE V. SESSIONAL PAPER No. 25a A. 1912 



INDEX. 



A 



Page. 



Absarokose ■• •• 368 



Abyssal igneous injection 573-4, 705, 713, 777 



Accordance of summit levels 60S, 631ff 



Acid earth-shell 702, 780 



Adams, F. D 757 



Adams Lake series. . 191, 194 



Akamina Creek syncline 90 



Akerose 328,415 



Alaskose 355 



Alkaline igneous rocks, origin of 78S 



Alps, comparison of Cordillera with 17 



Altyn formation, Clarke range 58, 58, 59, 60 



, , columnar section of 56 



, MacDonald range 9S 



Altyn, Montana, section at •• 57 



Ami, H. M 3, 59, 111, 112, 113, 115 



Ammonium carbonate as a geological agent 644f£ 



Amygdules, calcitic, of Sheppard lava 80 



Analcite 412 



Analcitic rhomb-porphyry (shackanite) 411, 415 



Anarchist Mountain, formations of 389 



Anarchist series 389 



Ancycloceras remondi 48S 



Andes, comparison of Cordillera with 17 



Andesite 333, 399, 400, 439, 521, 529 



, origin of 782,786 



Andose 458, 534 



Andrews, E. C 754,767 



Andrussow, A 659 



Anomia 85 



Anorthosites, origin of 757,777 



Appekunny formation . . 66 



, columnar section of 67 



Arago geosynclinal 565 



Arkose, Cretaceous basal „ 433 



Ashnola gabbro 431,435 



Aspidium fredericksburgense 487,817 



Assimilation, abyssal . 246, 755, 777 



— , magmatic 246,247, 253, 300,731,756,777 



.marginal 244,731,756,777 



Assimilation-differentiation theory of igneous rocks 253, 477, 759, 778 



Asymmetry of peaks ' 588,592 



Athyris parvula 111,112 



vittata Ill 



Atrypa aspera 115, 116 



—reticularis 116 



Attwood group 378,382 



Atwood, W. W 580,602 



Aviculopecten 511,512 



841 

 25a — vol. iii — 56 



