210 
INDEX TO NORTH AMERICAN GEOLOGY, 
[BULL. 271. 
Petrology— Continued. 
Canada. 
Abitibi region, Kay, 1. 
Geology and petrography of Skefford Moun- 
tain, Dresser, 1. 
Geology of Brome Mountain, Dresser, 2. 
Lamprophyres of the Rossland mining dis- 
trict, Barber, 1. 
Nephelinerock from Ontario, Adams (F. D), 1. 
Nickel and copper deposits of Sudbury, Bar- 
low, 1. 
Petrography of rock samples from British 
Columbia, Robertson, 4. 
Pyroxenitcs of the Grenville scries in Ottawa 
County, Canada, Gordon, 2. 
Stratigraphy and igneous rocks of Alaska, 
Emerson (B. K.), 1. 
Colorado. 
Greenstone scliist> in the San Juan Moun- 
tains, Howe, l . 
Grt < nland. 
pocks from cast coast of Greenland, Nor- 
denskjold, l. 
Rocks of Nugsuaks Peninsula, Phalen, l. 
Guatt mala. 
Alta Verapaz, Sapper, L. 
Hawaiian Islands. 
Trachyte in Hawaii, < !ross W .), 2. 
Idaho. 
Geological reconnaissance across the Hitter- 
root Range and Clearwater Mountains, 
Lindgren, 2. 
Iowa. 
Analysis of dolomite rock, Knighl (N.), 2. 
Dolomites of eastern Iowa, Knighl (N.), 1. 
Maryland. 
struct nre of the Piedmont Plateau, Ma then s, 
1. 
Massachusetts. 
Alkalisycnit von Beverly. Wrighl I F. E.), 2. 
Calcite-prehnite cement rock from theHol- 
yoke Range, Emerson (B. K.), 1. 
Geology of the Weston aqueduct, Crosby, 3. 
Rocks of the Weston aqueduct, Warren, l. 
Mexico. 
Geology of the San Jose 1 district, Fin lay (G. l. . 
1. 
Geology of western Mexico, Farrington, 2. 
Michigan. 
Menominee districl of Michigan, Bayley, 1. 
Mi urn sota. 
Spherulitic texture in the Archean green- 
stones of Minnesota, Clements, 1. 
Montana. 
Geological reconnaissance across the Hitter- 
root Range and Clearwater Mountains. 
Lindgren, 2. 
Nt vada. 
Geology of region of Walker River, smith 
(D.T.),1. 
Nt w Hampshirt . 
Geology of Monadnock Mountain, perry, p 
Nt w York. 
Exposure Of serpentine at Syracuse, KraUS, 
1. 
Geology of the City of New York, Gratacap, 2. 
Geology of the Hudson Valley, Dale, 3. 
, 
Petrology— Continued. 
North Carolina. 
Granites of North Carolina, Watson (T. L.) 
5,8. 
Leopardite, Watson (T. L.), 3. 
Orbicular gabhro-diorite from Davie County, 
Watson (T. L.), 4. 
Oklahoma. 
Geology of the Wichita Mountains, Gould, 5. 
Oregon. 
Eclogites in California, Holway, 1. 
Philippine Islands. 
Volcanoes and seismic centers of the Philip* 
pine Archipelago, Maso, 1. 
South Dakota. 
Newly discovered rock at Sioux Falls, Todd, 
Tt :ras. 
Geologie und Petrographie der Apache Moun 
tains, ( isann, 1. 
Quartz-feldspar-porphyry from Llano, Id 
dings, 2. 
IV rmont. 
Serpentine bell of Lamoille and < uleanscoim 
ties, Marsters, 1. 
I irginia. 
Occurrence of unakite, Phalen, 2. 
Washington. 
Geological reconnaissance across theCascadi 
Range, Smith and Calkins, 1. 
West Indies. 
I Me vulcanischen Kleinen Antillen und di 
Ausbriiche der Jahre 1902 und 1908, Saf- 
per, f>. 
l.a Montague Pelee et ses eruptions, Laerob 
1. 
Massive-SOlid volcanic eruptions, Russell, 
Vulcanisehe Asche vom Vulcan Souf 
Klein, 1. 
Wisconsin. 
Baraboo iron-bearing district of Wisccj 
Wcidman, 3. 
Occurrence of fa ya lite in Wisconsin, Wei 
man, 1. 
Wyoming. 
Copper deposits of the Encampmenl did 
Spencer (A. C), 2. 
Gent ml . 
Analyses of igneous rocks, Washington, 1. 
Analyses of rocks, Clarke, 1. 
Beziehungen zwischen der Petrographie u 
angrehzenden Wissenschaftcn, Zirkel, 1 « 
Bibliography and index of North Amerk 
geology, paleontology, petrology, and m i 
era logy for 1903, Weeks, 1. 
Classification of sedimentary rocks, Grabai 
Eutectics in rock magmas, Lane, 5. 
Geophysical investigations suggested, A<1» i 
(F. D.),2. 
Handbook of rocks, Kemp, 4. 
Manual of the chemical analysis of roi • 
Washington, 2. 
Microscopic-petrographical methods, Wri 
(F. E.),l. 
Paramorphic alteration of pyroxene toll i 
blende, Gordon, 1. 
Ramosite not a mineral, Luquer, 2. 
Treatise on metamorphism, Van Hise, 1. 
; 
