Classification of Igneous Eocks. 
99 
1907 - 8 .] 
— continued. 
G. T. Prior, Min. Mag. xii., p. 262, 1900. 
Grorudite. 
Abyssinia. 
Q. Journ ., 1902, p. 666. 
Rhyolite obsidian. 
Medicine Lake. 
Q. Journ., 1902, p. 666. 
Granular felsite. 
Co. Wicklow. 
N. Jahrb., 1905, vol. i., p. 437. 
C. Barrois, Guide, Exc. viii., Gong. G., vii., p. 
Quartz costonite. 
Madagascar. 
Aplite. 
Brittany. 
21, 1900. 
N. Jahrb., 1900, vol. ii., p. 221. 
Felsite porphyry. 
Storholmen. 
N. Jahrb., 1905, vol. i., p. 247. 
A. Geikie, p. 157, third edit. 
Liparite, mean of 6 and 7. 
Granite, mean of twelve 
localities. 
Somali Desert. 
N. Jahrb., 1895, vol. ii., p. 82. 
Porphyry. 
Leinster. 
N. Jahrb., 1901, suppl. 14, p. 39. 
Quartz keratophyre. 
Harz. 
Q. Journ., 1856, p. 199. 
Roth’s Beitrdge z. Petrog., 1869, p. xlvi. 
Granite. 
Newry, Co. Down. 
Granite. 
Syene, Egypt. 
U. S. Grant, 21, A.E.G.Nh.S. Minn., p. 43, 
Granite. 
Minnesota. 
1893. 
Q. Journ., 1901, p. 36. 
Rhyolitic rock, tuffaceous. 
Westmoreland. 
Duparc, Pearce, and Ritter, M. Soc. Ph. Genev. 
Dacite. 
Algeria. 
xxxiii., No. 2, p. 59, 1900. 
N. Jahrb., 1900, vol. i., p. 27. 
Granite, reduced to 100. 
Bairischer Wald. 
Q. Journ., 1877, p. 457. 
Rhyolite (perlitic). 
Wrekin. 
N. Jahrb., 1901, vol. ii., p. 233. 
Granite. 
Querigut, Pyrenees. 
Q. Journ., 1875, p. 335. 
Eurite (fine-grained Elvan). 
Cornwall. 
Q. Journ., 1902, p. 170. 
K. Murakozy, F.K., xxii., p. 54, 1892. 
Granite. 
Chywoon, Cornwall. 
Rhyolite. 
Hungary. 
Q. Journ., 1880, p. 8. 
Granite. 
Lamorna, Cornwall. 
Merrill, p. 132. 
Granite. 
N. Carolina. 
N. Jahrb., 1905, vol. ii., p. 382. 
Granitite. 
Brix. 
W. Cross, B. U.S.G.S., 148, p. 179, 1897. 
Rhyolite. 
Colorado. 
E. Haworth, A.P.Mo.G.S., viii., p. 181, 1895. 
Granite. 
Minnesota. 
C. W. Schmidt, Z.D.G.G., xxxvii., p. 744, 1885. 
Liparite. 
Iceland. 
N. Jahrb., 1905, vol. i., p. 247. 
Liparite. 
Somali Desert. 
N. Jahrb., 1893, vol. i., p. 285. 
Andesite. 
Cabo de Gata. 
N. Jahrb., 1906, vol. i., p. 375. 
Granite. 
Campo, Elba. 
Q. Journ., 1902, p. 666. 
Duparc and Mrazec, M. Soc. Phys. Gen., xxxiii., 
Rhyolite. 
Euganean Hills, Italy. 
Quartz porphyry. 
Mont Blanc. 
No. 1, p. 107, 1898. 
N. Jahrb., 1901, vol. ii., p. 59. 
Pegmatite. 
Silfpickarehald. 
