w EEKS.] 
PETROLOGY, AND MINERALOGY FOR 1892-1900. 
307 
Petrology— Con tinned. 
List of rocks dt scribt d — < !< >ntinued. 
Arko.se, Barlow ami Ferrier, 252. 
Arkose, Winehell and Grant, 6376. 
Augen-gneiss, Brooks, 615. 
Augen-gneiss, Luquer and Ries, 3598. • 
Angen-gneiss, Mezger, 3978. 
Augen-gneiss, Raymond, 4560. 
Augite-andesite, Lord, 3572. 
Augite-andesite, Merrill, G. P., 3951. 
Augite-andesite, Washington, 5870. 
Augite-diorite, Cross, 1185. 
Angite-mica-gneiss, Emmons, Cross, and 
Eldridge, 1707. 
Augite-picrite-porphyrite, Ferrier, 1813. 
Augite-porphyrite, Bascom, 276. 
Augite-porphyrite, Ferrier, 1813. 
Augite-porphyrite, Matthew, W. D., 3798. 
Augite-porphyrite, Merrill, G. I'., 3951. 
Augite-porphyrite, Williams, 6154. 
Augite-porphyry, Turner, 5467. 
Augite-syenite, Ferrier, 1813. 
Augite-syenite, Lindgren, 3515. 
Augite-syenite, Sears, 4904. 
Augite-syenite, Weed and Pirsson, 5936. 
Augite-syenite-gneiss, Cushing, 1246. 
Augite-syenite-porphyry, Cross, 1190. 
Augite-teschenite, Fairbanks, 1753. 
Augite-vogesite, Weed and Pirsson, 5935. 
Augitic tuff, Turner, 5457. 
Banakite, Cushing, 1246. 
Banakite, [ddings, 2833, 2847. 
Basalt. Bayley, 313. 
Basalt, Becker, 345. 
Basalt, Bergeat, 423, 
Basalt, Cross, 1185, L188. 
Basalt, var. limburgite, Cross. 1191. 
Basalt, Darton and Keith, 1327. 
Basalt, Diller, L507, L508. 
Basalt, Emmons, Cross, and Eldridge, L707. 
Basalt, Fairbanks, 1753. 
Basalt, Ferrier, 1813. 
Basalt, Hague, 2236. 
Basalt, Hills. 2599. 
Basalt, Hovey, 2765. 
Basalt, Iddings, 2821, 2830, 2845, 2849. 
Basalt, Kemp, 2993. 
Basalt, Lawson, 3416. 
Basalt, Lindgren, 3515, 3540. 
Basalt, Lord, 3572, 3573. 
Basalt, Merrill, G. P., 3951. 
Basalt, Ordonez, 4144. 
Basalt, Ransome, 4532. 
Basalt, Teall, 5361. 
Basalt, Turner, 5432, 5465, 5467, 5471. 
Basalt, Turner and Ransome, 5470, 5485. 
Basalt, Van Hise and Bayley, 5701. 
Basalt, Weed, 5945, 5946. 
Basalt, Weed and Pirsson, 5935. 
Basalt, Williams, 6155. 
Basalt, Winehell and Grant, 6376. 
Basalt tuff, Diller, 1507. 
Belugyte, Spurr, 5185. 
Beresite, Spurr, 5182. 
Biotite-bearing hornblende-granite, Diller, 
1507. 
Biotite-epidote gneiss, Williams, 6159. 
Petrology— Continued. 
List of rocks described— Continued. 
Biotite-epidote-schist, Watson, 5888. 
Biotite-gneiss, Brooks, 615. 
Biotite-gneiss, Clements, 1014. 
Biotite-gneiss, Diller, 1507. 
Biotite-granite, Clements, 1014. 
Biotite-granite, Clements and Smyth, 1017. 
Biotite-granite, Diller, 1507. 
Biotite-granite, Turner, 5479, 5481. 
Biotite granite, Van Hise and Bayley, 5704. 
Biotite-hornblende-granite, Turner, 5432. 
Biotite schist, Winehell and Grant, 6376. 
Biotite-tinguaite, Eakle, 1587. 
Biotite tinguaite dike rock, Sears, 4904b. 
Bostonite, Kemp and Marsters, 2978. 
Breeeia, Bascom, 276. 
Breccia, Cross, 1190. 
Breccia, Diller, 1507. 
Breccia, Lawson, 3416. 
Breccia, < >rdoflez, 4141. 
Breccia, Weed and Pirsson, 5935. 
Calcareous sandstone, Kemp, 2993. 
Camptonite, Bascom. 285. 
Camptonite, Diller, 1507. 
Camptonite, Kemp and Marsters, 2978. 
Camptonite, Lord, 3571. 
Camptonite, Marsters, 3726, 3727. 
Camptonite, Ries, 4622. 
Camptonite, Washington, 5876, 5879. 
Camptonite, Winehell and Grant, 6376. 
Cancrinite, Barlow . 247. 
Cellular basalt, Diller. L507. 
Chalk. Diller, 1507. 
Chert, Diller. L507. 
Chert, Hovey, 2764, 2764a. 
Chert, Lawson, 3416. 
Chiastolite schist, Diller. L507. 
Chiastolite-schist, Turner. 5465. 
Chlorite-schist, Brooks, 615. 
Chlorite schist, Winehell and Grant, 6376. 
Chloritic SChist, Ferrier, 1813. 
Chlorine schist, Turner, 5465. 
Clay, Diller, 1507. 
Clay, Kemp, 2993. 
Claystone, Diller. L507. 
Claystones, Nichols, W94. 
Coal, Diller, 1507. 
Concretions, Diller, 1507. 
Concretions. Weston. 6023. 
Conglomerate, Diller, 1507. 
Coquina, Diller, 1507. 
Cordierite gneiss, Winehell and Grant, 6376. 
Cordierite norite, Winehell, 6277. 
Cortlandite, elements, 1014. 
Cortlandite, Diller, 1507. 
Cortlandite, Emerson, 1677. 
Dacite, Bergeat, 423. 
Dacite, Cross, 1191. 
Dacite, Diller, 1507, 1508. 
Dacite, Ferrier, 1813. 
Dacite, Iddings, 2823,2824,2846. 
Dacite, Irving, 2868. 
Dacite, Kemp, 2993. 
Dacite, Lindgren, 3515. 
Dacite, Smith, 5062. 
Dacite, Turner, 5457. 
