Classification of Igneous Rocks. 
103 
1907-8.] 
— continued. 
■ — 
Q. Journ., 1901, p. 36. 
Zeitsch. d. d. geol. Gesell., pt. i., 1867-68, xx., p.328. 
Rhyolitic rock, tuffaceous. 
Quartz porphyry. 
Westmoreland. 
Toscana. 
Hatch, Petrology , p. 113 (Sollas). 
Granite. 
Aughreni. 
C. R. Keyes, 15, A.P.U.S.G.S., p. 697, 1895. 
Biotite granite. 
Maryland. 
H. W. Turner, J.G. , vii., p. 143, 1889. 
Biotite granite. 
Amador Co. 
J. H. Sears, B.M.G.Z. , xvi., p. 170, 1890. 
Keratophyre. 
Massachusetts. 
N. Jahrb., 1905, vol. i., p. 254. 
Hyp. dacite. 
Yellowstone Park. 
N. Jahrb ., 1900, vol. ii., p. 221. 
Felsite porphyry. 
Gorgviker. 
L. Milch, Z.D.G.G., L.I. , p. 69, 1899. 
Quartz trachyte andesite. 
Sumatra. 
N. Jahrb., 1901, supp. 14, p, 38. 
Judd. Roy. Soc., Krakatoa report, pt. i., p. 32. 
Porphyroid. 
Harz. 
Hyperst. aug. andesite. 
Krakatoa. 
N. Jahrb., 1893, vol. ii., p. 100. 
Quartz porphyry. 
Miihlental. 
Q. Journ., 1891, p. 278. 
N. Jahrb., 1905, vol. i., p. 254. 
Granite. 
Sliapfell. 
Hyp. dacite. 
Yellowstone Park. 
J. S. Diller, B.U.S.G.S., 148, p. 195, 1897. 
Hornbl. andesite. 
California. 
N. Jahrb., 1892, vol. ii., p. 413. 
Quartz porphyry. 
Saar Nahe. 
N. Jahrb., 1892, vol. ii., p. 413. 
Quartz porphyry. 
Munster a/St. 
N. Jahrb., 1893, vol. i., p. 285. 
Liparite. 
Cabo de Gata. 
Q. Journ., 1900, p. 679. 
Felsite (brown, compact). 
Co. Waterford. 
H. Loretz, Jb. Pr. G.L.A., ix. p. 295, 1889. 
Quartz porphyry. 
Baden. 
Duparc, Pearce, and Ritter, M. Soc. Phys. Gen., 
Tourmaline granite. 
Algeria. 
xxxiii., No. 2, p. 18, 1900. 
W. H. Weed, B.U.S.G.S., 168, p. 119, 1900. 
Quartz porphyry. 
Montana. 
N. Jahrb., 1906, vol. i. 
Normal granite. 
Campo, Elba. 
Q. Journ., 1906, p. 107. 
Quartz felsite. 
S. America. 
Darton and Keith, A.G.S., vi., p. 307, 1898. 
Felsophyre. 
Virginia. 
Q. Journ., 1891, p. 276 (Cohen). 
Q. Journ., 1901, p. lxxxiii. 
Granitite. 
Shapfell. 
Quartz felsite (Waller’s 
analysis). 
Cheviots. 
N. Jahrb., 1901, ii., p. 62. 
Orthoclase porphyry. 
Teiske, Finland. 
N. Jahrb, 1901, vol. ii., p. 240. 
Granodiorite. 
Silverlake, Eldorado. 
W. Cross, 14, A.R.U.S.G.S. , p. 227, 1894. 
Quartz porphyrite. 
Colorado. 
W. H. Weed, J.G. , vii., p. 739, 1809. 
Granite. 
Montana. 
N. Jalirb., 1904, v@l. i., p. 65. 
Granite. 
Steiermark. 
JSF. Jahrb., 1892, vol. i., p. 326. 
A. Schmidt, cf. N.J., 1889, i., p. 95. 
Porphyry, schistose. 
Michigan. 
Porphyry. 
Miinstertal. 
N. Jahrb., 1895, vol. ii., p. 100. 
Kersantite. 
Balme. 
W. Cross, Telluride folio U.S., U.S.G.S., p. 6, 
Quartz monzonite. 
Colorado. 
1899. 
N. Jahrb., 1892, vol. ii., p. 413. 
Quartz porphyry. 
Kreutznach. 
H. Berghell, Finl. G. XJnd. BL, 23, p. 18, 1892. 
Microcline granite. 
Finland. 
N. Jahrb., 1904, vol. i., p. 70. 
Granulite adds too high. 
Aiguilles Rouges. 
