REPORT OF THE CHIEF ASTRONOMER xxvii 



SESSIONAL PAPER No. 25a 



XXXII. Analyses of Castle Peak and Similkameen granodiorites . ... 493 



XXXIII. Analyses of granodiorites 539 



XXXIV. Correlation at the Forty-ninth Parallel 552 



XXXV. Correlations within the Western Geosynclinal Belt 557 



XXXVI. Geological events in provinces of the Western Geosynclinal 



Belt 561 



XXXVII. Principal events recorded in the Western Geosynclinal Belt as 



a whole 564 



XXXVIII. Calcium and magnesium in Bohemian rivers 650 



XXXIX. Analyses of Ottawa river 653 



XL. Calcium and magnesium in various rivers 654 



XLI.-XLII. Experimental results with ammonium carbonate 662 



XLIII. Calcium and magnesium in limestones of the geological 



periods 665 



XLIV. Average compositions calculated for the principal igneous-rock 



types 680 



XLV. Comparison of average analyses of granite, basalt, diorite, 



and andesite • 704 



XL VI. Comparison of average analyses of granites and ground-mass 



of augite andesite 705 



XLVII. Showing rates of thermal diffusivity in rock 738 



XL VIII. Specific gravities of rocks and glasses 742 



XLIX. Specific gravities of crystals and glasses 742 



L. Decrease in density, rock to glass at 20° C 743 



LI. Specific gravities of rocks and melts 743 



LII. Change of density of rocks with change of temperature. . . . 744 



LIII. Showing quantities of volatile matter in sediments 764 



LIV. Water in igneous rocks 764 



LV. Comparison of plutonic and effusive rocks 775 



APPENDIX 'A.' 

 Table of chemical analyses made for the report 793 



:p^.:rt ii r 



Containing seventeen geological maps, with structure sections (sheets 1 to 17), 

 and two sheets of photographic panoramas (sheets 18 and 19). 



