Classification of Igneous Eocks. 
95 
1907-8.] 
— continued. 
N. Jahrb., 1903, vol. i., p. 430. 
Rhyolite. 
Aroostock area. 
Q. Journ ., 1899, p. 467. 
J. P. Iddings, M.U.S.G.S. , xxxii., p. 426, 
Rhyolite. 
Mt. Sheridan, California. 
Rhyolite. 
Yellowstone Park. 
1899. 
N. Jahrb., 1901, vol. ii., p. 244. 
Granite rock. 
Fox River. 
G. W. Card, Rec. G.S.N.S.W ., iv., p. 116, 1895. 
Trachyte. 
N. S. Wales. 
N. Jahrb., 1901, vol. ii., p. 244. 
Rhyolite gneiss. 
Fox River. 
Q. Journ., 1883, p. 297. 
Hatch, Petrology, p. 129. 
Felsitic tuff. 
St Davids. 
Pitch stone. 
Arran. 
Q. Journ., 1893, p. 545. 
Pitch-stone porphyry. 
Arran. 
Teall’s Br. Petrology, 1888, p. 348. 
Rhyolite. 
Tardree, Antrim. 
N. Jahrb., 1893, vol. ii., p. 100. 
Quartz porphyry. 
Alvensleben. 
N. Jahrb., 1905, vol. ii., p. 57. 
Quartz porphyry. 
Bohemia. 
N. Jahrb., 1905, vol. i.. p. 247. 
Liparite, mean of 1 and 2. 
Somali. 
Q. Journ., 1899, p. 765. 
Felsite, nodular. 
Co. Waterford. 
N. Jahrb., 1901, vol. ii., p. 62. 
Leptite. 
Suoniemi, Finland. 
Prestwich, vol. i., p. 41 (Durocher). 
Felsite. 
Brittany. 
T. H. Holland, Mem. G.S.I., xxviii., p. 142, 
Charnockite. 
Mt. Thomas. 
1900. 
(T. H. Holland). 
Charnockite. 
Madras. 
Whitman Cross, Table XIII. 
Comendite. 
Sardinia. 
Roth’s Beitrdge z. Petrog., 1869, p. 51. 
Eurite. 
Moena, Tyrol. 
Prestwich, i., p. 37. 
Rhyolite. 
Hungary. 
N. Jahrb., 1904, vol. ii., p. 223. 
Quartz-diorite porphyrite. 
Montenegro. 
N. Jahrb., 1903, vol. i., p. 430. 
Trachyte (resembl. bos- 
tonite). 
Aroostock. 
Q. Journ., 1883, p. 297. 
Felsitic tuff. 
St Davids. 
L. Ricciardi, Atti. Ac. Gioen. Gatan., xviii. (18), 
Porphyry. 
Piedmont. 
1885. 
N. Jahrb., 1905, vol. i., p. 247. 
Liparite. 
Somali Desert. 
A. Geikie, p. 140. 
Pitch stone, average. 
Hatch, Petrology , p. 138. 
Soda rhyolite. 
Wicklow. 
N. Jahrb., 1906, vol i. 
Alkali granite. 
Campa, Elba. 
N. Jahrb., 1900, vol. i., p. 224. 
Granitite. 
Kullen. 
Q. Journ., 1895, p. 319. 
J. E. Spnrr, A.G., xxv., p. 231, 1900. 
Pumice. 
Challenger Expedition. 
Alaskite. 
Alaska. 
H. 0. Lang, Nyt. Mag., xxx., p. 40, 1886. 
Quartz porphyry. 
Thuringerwald. 
W. Lindgren, B.U.S.G.S., 150, p. 151, 1898. 
Rhyolite obsidian. 
California. 
N. Jahrb., 1904, vol. ii., p. 407. 
Quartz porphyry. 
N. Hampshire. 
N. Jahrb., 1905, vol. ii., p. 234. 
Liparite. 
John Day Basin. 
