WEEKS.] 
PETROLOGY, AND MINERALOGY FOR 1892-1900. 
45 
Carboniferous (including Permian)— Continued. 
Great Basin region. 
Age of limestone strata and occurrence of 
gold, Blake, 450. 
Geology of Mercur mining district, Utah, 
Emmons, 1704. 
Section in Congress Canyon, Freeh, 1891. 
Walnut Canyon, Hughes, 2801. 
sit rra Nevada and Pacific Coast region. 
Auriferous conglomerate of Jurrassic age, 
Lindgren, 3524. 
Auriferous slates of the Sierra Nevada, Smith, 
J. P., 5042. 
Big Trees folio, California, Turner and Ran- 
some, 5485. 
Bidwell Bar folio, Turner, 5471. 
Colfax folio, Lindgren, 3547. 
Downieville folio. Turner, 5467. 
Geological notes on the Sierra Nevada, Tur- 
ner, 5453. 
Geology of Taylorsville, Diller, 1496. 
Granitic rocks of Pyramid Peak district, 
Lindgren, 3535. 
Jackson folio, Turner, 5451. 
Lassen Peak folio, California, Diller, 1502a. 
Marine fossils from Coal Measures of Arkan- 
sas, Smith, 5046. 
Mesozoic and Paleozoic in Shasta County, 
Fairbanks, 1745. 
Metamorphic series of Shasta County, Smith, 
.1.1'., 5041. 
Mother Lode district folio, California, Ran- 
some, 4543. 
Nevada City special folio, Lindgren, 3529. 
Placerville folio, Lindgren and Turner 
Pyramid Peak folio, Lindgren, 3530. 
Smartsville folio, Lindgren and Turner. 
Central America. 
Geological waterways across Central America, 
Spencer, 5159. 
Mexico. 
Geology of Mexico, Bain, 189. 
Geology of Sonora, Mexico, Dumblc, 1573. 
Yucatan. 
Geology of Yucatan, Sapper, 4793. 
Chemical analyses. », ' 
Absarokite, Clarke and Hillebrand, 925. 
Absarokite, [ddings, 2847. 
Absarokite, Weed and Pirsson,5938. 
Acmite-traehyte, Washington, 5872. 
Actinolite-magnetite schist, Clarke and Hil- 
lebrand, 925. 
Adamellite, Weed, 5948. 
Adinole, Clements, 1016. 
Adular, Merrill, 3955. 
Adularia, Winchell, 6368. 
JEgirite-trachyte, Washington, 5872. 
Akerite, Gushing, 1246. 
Akerite, Washington, 5873, 5877. 
Albertite, Taff, 5291. 
Albite, Diller, 1507. 
Alnoite, Smyth, 5091. 
Altaite, Hoffmann, 2659a. 
Alunite rock, Cross and Spencer, 1206. 
Amphibole, Turner, 5481. 
Chemical analyses— Continued. 
Amphibole-monchiquite, Washington, 5880. 
Amphibole schist, Turner, 5465. 
Amphibolite, Clarke and Hillebrand, 925. 
Amphibolite, Kemp, 2993. 
Amphibolite, Lewis, 3507. 
Analcite, Clarke and Hillebrand, 925. 
Analcite, Clarke and Steiger, 933. 
Analcite, Pirsson, 4394. 
Analcite-basalt, Cross, 1197. 
Analcite-basalt dike, Pirsson, 4 ids. 
Analcite rock, Coleman, 1012. 
Andesite, Becker, 345. 
Andesite, Clarke and Hillebrand, 925. 
Andesite, Cross, 1191. 
Andesite, Iddings, 2845. 
Andesite, Kemp, 2993. 
Andesite, Ransome, 4540. 
Andesite, Smith, 5062. 
Andesite, Smith, 5059-5062. 
Andesite, Smith, 5032. 
Andesite, Tower and Smith, 5445. 
Andesitic tuff, Diller, 1507. 
Andradite, Harrington, 2297. 
Anhydrite, N'ico], 4097. 
Ankerite, Rogers, 4652. 
Anorthite, Hillebrand, 2585. 
Anorthite, Pratt, 4436. 
Anorthosite, Coleman, 1032. 
Anorthosite, Miller, 4011. 
Anthophyllite, Pratt, 4439. 
Anthophyllite, Pratt, 4136. 
Anihraxolite, Ellis, 1639. 
Antimony ocher, Hoffmann, 2659. 
Apatite, Merrill (95 >. 
Aplite, Clarke and Hillebrand, 925. 
Aplite, Iddings, 2845. 
Aplite, Lord, 3574. 
Aplite, Turner, 5466. 
Aplite, Washington, 6875, 5877. 
Aplite, Wed, .Vtis. 
AplitiC, granite, Weed and Pirsson, 5935. 
Aporhyolite, Clarke and Hillebrand, 925. 
Aporhyolite, Diller, 1507. 
Artesian water, Norton, 4122. 
Asphalt, Sadtler, 472in. 
Asphalt, Vaughan, •".721;. 
Augite, Emmons, Cross, and Eldridge, 1707. 
Augite, Watson, 5891. 
Augite-andesite, Clarke and Hillebrand, 925. 
Augite-andesite, Ransome, 4540. 
Augite-diorite, Cross, 1191. 
Augite-latite, Ransome, 4540. 
Augite mica diorite, Weed and Pirsson, 5935. 
Augite-mica syenite, Emmons, Cross, and 
Eldridge, 1707. 
Augite-porphyrite, Lord, 3571. 
Augite-syenite, Lindgren, 3531. 
Augite-syenite-gneiss, Cushing, 1246. 
Augite-vogesite, Clarke and Hillebrand, 925. 
Augite-vogesite, Weed and Pirsson, 5935. 
Baddeckite, Hoffman, 2660, 2662. 
Banakite, Clarke and Hillebrand, 925. 
Banakite, Cushing, 1246. 
Banakite, Iddings, 2^47. 
"Chemical analyses given in Bull. No. 168, U. S. Geological Survey, "Analyses of rocks from the labo- 
ratory of the United States Geological Survey, 1880-1899," by F. W. Clarke, are not contained in this list. 
*>This list of chemical analyses is for the years 1897 to 1900, include. 
