461 



PAGE 



Contact-alteration by diabase ... 217 



Contact-metamorphism 873 



Contact-minerals 240,381 



Contact-rocks, analyses of 380 



Contemporaneous veins, in dolerite 212 

 in ensta- 



tite-diorite 275 



in granite 318 



Cordierite 305, 383 



Cordierite-hornfels 375 



Cornubianite 385 



Corrosion of crystals, cause of ... 407 



Corsite 134 



Cortlandtite 82 



COSSA, chrome-diopside 89 



peridotites 80 



COTTA, classification of rocks ... 44 



CROSS, rutile in biotite 262 



Cryohydrate 393 



Crystallites, development of 13 



Crystals, mechanical deformation 



of, corrosion of, inclusions in 16 

 Crystallization, effect of on com- 

 position of mother-liquor ... 43 

 Cumulites 308 



D 



Dacite-glass 286 



Dacite 287 



DAMOUE, chromo-diopside 89 



geyser-water ... 411 



peridotites 79 



DANA, J. D., hornblendite and py- 



roxenite 71 



DARWIN, metamorphism 422 



DATHE, peridotites 79 



DAUBR^E, origin of zeolites 412 



relation between terres- 

 trial and extra-terres- 

 trial rocks 50 



DAVIES, T., Dimetian rocks 318 



rocks of Pembroke- 

 shire 222, 335 



gneissose rocks of Tal- 



benny 319 



DAVY, fluid inclusions 22 



Decomposition of igneous rocks 



46, 392, 413 



DBS CLOISEAUX, geyser-water ... 411 

 optical properties 



of felspars ... 142 



peridotites 79 



DE LA BECHE, contact-metamorph- 



ism 386 



DELESSE, globular structures in 



rocks 308 



Desmoisite 220 



Devitrification, effect of upon 



specific gravity 13 



- of artificial glasses 397 



of natural glasses 



293 842 

 Diabase 134, 192,' 237 



contact alteration pro- 



duced by 217 



dynamic metamorphosis 



of 216,230,233 



Diabase-porphyrite ... 134,221,248 



" Diabas-mandelstein " 209, 230 



Diallage 160 



DILLER, fulgurite 13 



Dimetian granite 318 



Diorite 133, 253, 264 



classification of 254 



dynamic metamorphosis of 277 



Dipyre 383 



Ditroite 359 



DOELTER, phonolite 361 



pyroxene 155 



pyroxenite 77 



Dolerite 136, 192, 245 



general characters of ... 181 

 - effect of granite upon ... 234 

 passage into hornblende- 

 schist 198, 241 



DOWNES, mica-trap 352 



DRASCHE, serpentine 109 



Dunite 79 



"Dunstone" 230 



Durocher's theory 44 



DUTTON, classification of rocks ... 65 



Dykes 195,200 



Dynamic metamorphism 416 



E 



Elseolite-syenite 358 



Elaeolite 363 



Elvanite 291, 333 



Enstatite of acid rocks 804 



of basic rocks 136 



of intermediate rocks . . . 261 



of ultra-basic rocks 87, 118 



Enstatite-andesite 278 



Enstatite-diabase 222,225 



Enstatite-diorite 257,272 



Enstatite-dolerite 187,190,192 



Enstatite-porphyrite 227 



Enstatite-syenite 293 



Epidiorite ... 135,198, 217, 232, 235, 

 237, 240, 242, 245 



Epidote, in saussurite 149 



ERDMANN, AXEL, peridotites 79 



E SHARK, norite 133 



Eucrite ... , ,.. 134 



