138 
BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 135. 
Petrology— Continued. 
Vermont. 
Basaltic bowlders from Vermont, Hovey, 292. 
Virginia. 
Harpers Ferry folio, Keith, 321. 
Miseellan eous discussions. 
Distribution of ancient volcanic rocks, Wil- 
liams, G.H.,G37. 
Formation of pegmatite veins, Brcigger, 39. 
Summary of progress in mineralogy and pe- 
trography, Bay ley, 17a. 
Volcanite, Hobbs, 277. 
Rocks described. 
Actinoliteniagnetite schist, Elftman, 1G9. 
Amphibolite, Lindgren, 363. 
Amphibolite, Turner, 564. 
Aniphobilite schist, Lane, 350. 
Andesite, Bergeat, 24. 
Andesite, Cross, 108. 
Andesite, Keith, 321. 
Andesite, Turner, 564. 
Anorthosyte, Elftman, 169. 
Basalt, Bergeat, 24. 
Basalt, Cross, 109. 
Basalt, Hovey, 292. 
Basalt, Iddings, 306. 
Basalt, Eansome, 471. 
Basalt, Turner, 564. 
Biotite-hornblende-granite, Turner, 564. 
Chert, Hovey, 291. 
Daoite, Bergeat, 24. 
Diabase, Cross, 108. 
Diabase, Elftman, 169. 
Diabase, Grant, 223. 
Diabase, Keith, 321. 
Diabase, Lawson, 355. 
Diabase, Patton, 438. 
Diabase, Eansome, 471. 
Diabase, Smyth, C. H., jr., 525. 
Diabase, Todd, 559. 
Diabase, Turner, 564. 
Diorite, Cross, 109. 
Diorite, Culver, 115. 
Diorite, Grimsley, 229. 
Diorite, Todd, 559. 
Diorite, Turner, 564. 
Fourchite, Eansome, 472. 
Gabbro, Bay ley, 17. 
Gabbro, Elftman, 169. 
Gabbro, Grant, 223. 
Gabbro, Mattbew, W. D., 407, 408. 
Gabbro. Smyth, C. H., jr., 524. 
Gabbro, Turner, 564. 
Gneiss, Smyth, C. H., jr., 524. 
Granite, Cross, 109, 110. 
Granite, Culver, 115. 
Granite, Elftman, 169. 
Granite, Grant, 223. 
Granite, Grimsley, 229. 
Granite, Kemp, 327. 
Granite, Lawson, 352. 
Granite, Matthew, W. D., 408. 
Granite, Todd, 559. 
Granite-diorite, Matthew, W. D., 407. 
Granite-gneiss, Grimsley, 229. 
Granite-porphyry, Turner, 564. 
Petrology — Continued. 
Jiorks described— Continued. 
Granodiorite, Lindgren, 363. 
Granodiorite, Turner, 564. 
Hornblende picrite, Patton, 438. 
Hornblende porphyrite, Grant, 223. 
Hornblende schist, Lane, 350. 
Lamprophyre, Lane, 350. 
Leucite-bearing rock, Kemp, 328. 
Lherzolite-serpentine, Palache, 436. 
Limestone, Dale, 122. 
Nepheline syenite, Adams, 1. 
Nbrite, Turner, 564. 
Novaculite, Eutley, 482. 
Oolite rock, Hovey, 290. 
Peridotite, Turner, 564. 
Phonolite, Cross, 108. 
Phonolite, Pirsson, 456. 
Phonolite, Todd, 559. 
Porphyrite, Cross, 109. 
Porphyrite, Turner, 564. 
Pyroxene iock,Westgate, 619. 
Pyroxenite, Turner, 564. 
Quartz-diabase, Lane, 350. 
Quartz-porphyry, Keith, 321. 
Quartz-porphyry, Turner, 564. 
Quartz rock, Westgate, 619. 
Quartzite, Eutley, 482. 
Ehyolite, Cross, 108, 109. 
Ehyolite, Bergeat, 24. 
Ehyolite, Todd, 559. 
Ehyolite, Turner, 564. 
Schist, Dale, 122. 
Schist, Keith, 321. 
Serpentine, Eansome, 472. 
Soda-rhyolite, Palache, 435. 
Staurolitic mica schist, Grimsley, 229. 
Syenite, Cross, 108. 
Trachyte, Cross, 108. 
Trachyte, Bergeat, 24. 
Trachyte, Todd, 559. 
Physiographic geology. 
Alluvial river terraces, Dodge, 156. 
Catoctin belt, Keith, 322. 
Cenozoic geology of the middlo Atlantic slope, 
Darton,133. 
Climatology and physical features of Mary- 
laud, Clark, 71. 
Geological and topographical features about 
Atlanta, Purington, 468. 
Geology of Albany County, Darton, 129. 
Geology of Carmelo Bay, Lawson, 352. 
Geology of parts of Texas, Indian Territory, 
and Arkansas, Hill, 271. 
Geology of South Dakota, Todd, 559. 
Geology of Ulster County, Darton, 130. 
Geology of Washington and vicinity, McGee, 
etc., 387. 
Geomorphology of southern Appalachians, 
Hayes and Campbell, 264. 
Granite and porphyry region of Missouri, 
Lonsdale, 367. 
Great Plains of Colorado and Kansas, Em- 
mons, 181. 
Outlets of the St. John Eiver, Matthew, G. F., 
405. 
