106 Proceedings of the Royal Society of Edinburgh. [Sess. 
List of 1000 Rocks 
Group. 
Si0 2 
Ti0 2 . 
P 2 0 6 
H 2 0. 
A1 2 0 3 . 
Fe,Oj 
,. FeO. 
MgO. 
CaO. 
Na 2 0. 
k 2 o. 
Total. 
Sp.Gr. 
16 
a a b b b b 
62-4 
2-0 
20-2 
53 
•9 
1*1 
3*9 
5*8 
101*6 
2-601 
57-9 
24 
19-1 
2-5 
1-1 
1*2 
6*6 ‘ 
9*2 
100*0 
57-0 
2-9 
16-7 
2-5 
2*0 
1*4 
11*7 
100*2 
2*68 
563 
•5 
•8 
2-7 
•3 
7*8 
5*7 
99*9 
55-1 
1-1 
23*3 
3 3 
1*5 
6*8 
8*9 
99*8 
535 
1-4 
243 
11 
1-2 
•1 
*8 
8*6 
89 
99*9 
6 rocks 
57-0 
•1 
1-9 
21 -2 
1-7 
2-4 
’ 5 
1*2 
5*8 
.8*4 
100*2 
2*60 
±2 
5 
±2-5 
1*6 
| 
M3 
2*1 
±9*3 
17 
a b 
« a a 
75*5 
1*4 
96 
1-7 
4-3 
1-3 
1*0 
51 
*6 
100*4 
72-3 
1-8 
9-0 
6'3 
1-1 
•o 
1*9 
5*8 
1*5 
99*8 
2*66 
72-2 
•9 
13-8 
1-5 
2'0 
1-1 
3*5 
4*4 
*4 
100*3 
71-6 
1-0? 
10-5 
3-9 
2-2 
5-4 
2*7 
1*9 
*8 
100*0 
70-4 
(1-8) 
•3 
7-9 
7-0 
3-0 
*5 
*3 | 
4*1 
4*5 
100*6 
•8 
63 
1*4 
■9 
*8 
7*7 
2*5 
100*0 
(2-9) 
12-3 
4-7 
1*7 
6*7 
2*0 
100*8 
•6 
134 
4-8 
1-6 
5*1 
3*3 
1*8 
99*9 
68-0 
•3 
161 
4'4 
•5 
5*9 
4*3 
*5 
1000 
67-8 
•5 
■2 
1-0 
14-0 
5-2 
1-0 
4*3 
5*2 
1*2 
100*3 
2*71 
64-9 
•4 
•2 
30 
14-3 
5'7 
2-0 
5*5 
3*5 
*9 
100*4 
2*87 
11 rocks 
70*2 
■3 -1 
1-2 
11-6 
38 
2-4 
1-4 
3*0 
41 1-5 
100*2 
2*76 
±2-1 
±2-6 
' * 
1-7 
2*2 
1*9 
±10*5 
18 
a b a 
aab 
69-1 
163 
3-7 
1-4 
l'l 
5*1 
2*9 
1*1 
100*7 
2*46 
679 
*9 
•2 
■7 
122 
4-2 
30 
1-2 
2*0 
3*8 
4*5 
100*5 
669 
■2 
15-2 
65 
2-4 
3*7 
3*3 
*9 
99*1 
2*72 
•6 
■2 
•6 
15-2 
2*7 
1-8 
1-6 
3*7 
3*1 
4*5 
100*8 
66*7 
•4 
•1 
•9 
16-1 
1-5 
2-5 
1*7 
3*4 
2*7 
100*6 
663 
]•] 
14-3 
5-5 
•3 
2-4 
4*6 
3*9 
1*6 
100*0 
2*65 1 
65-9 
•8 
•2 
36 
13-7 
•5 
5-7 
2-3 
3*0 
2*8 
1*6 
100*3 
65-9 
•8 
14-9 
1-8 
31 
2*9 
2*1 
4*2 
100*8 
2*90 
65-2 
1-1 
15-6 
2-1 
3-7 
2*4 
6*7 
2*5 
1*5 
100*8 
65*1 
■3 
2-6 
162 
3-3 
•9 
1*8 
4*3 
3*4 
2*4 
100*2 
2*57 
63-9 
•6 
"1 
1*9 
15-8 
1-9 
2-8 
2*1 
4*8 
3*3 
3*1 
100*3 
63*9 
•7 
•2 
1-2 
15‘8 
2-1 
2-7 
2*1 
4*1 
2*8 
4*3 
99-9 
63-6 
2-9 
12-4 
6-4 
2-2 
1*3 
4*2 
4*9 
1*8 
2*52 
62-2 
2-3 
156 
5-3 
1-4 
2*6 
6*6 
2*5 
1*6 
100-0 
2*57 
62*0 
4-6 
15-2 
2-1 
2-0 
3*2 
5*5 
3*2 
1*7 
993 
61-0 
1-2 
•3 
5-4 
139 
1*6 
3-7 
1*6 
4*0 
2*8 
4*2 
99*8 
2*63 
16 rocks 
651 
•4 -1 
1-8 
14-9 
2*8 
2-7 
20 
4*5 
3*2 
2*6 
100*2 
2*64 
±ri 
±ro 
i*o 
±] 
L'2 
±1*2 
(±5*5) 
1907-8.] Classification of Igneous Rocks. 107 
1 — continued. 
Zirkel, Petrog., ed. 1, Bd. ii., p. 178. 
Zeitsch. d. d. geol. Gesell., pt. ii., xix., p. 477. 
N. Jahrb., 1901, suppl. 14, p. 38. 
Whitman Cross, TaTfle XIV. 
N. Jahrb., 1892, vol. ii., p. 146. 
H.S. Washington, J.G., ix., p. 667, 1901. 
Trachyte. 
Pumice. 
Keratophyre. 
Miascite. 
Phonolite (tinguaite). 
Foyaite. 
Hessen. 
Krufter Ofen. 
Harz. 
Mt. Lobatchio, Siberia. 
Sierra de Tingua. 
Arkansas. 
Q. Joum ., 1884, p. 528. 
Q. Joum., 1900, p. 686. 
H. W. Turner, 14, A.R. U.S.G.S. , ii.,p. 484, 1894. 
Q. Joum., 1891, p. 82. 
R. Jahrb., 1905, vol. i., p. 437. 
Whitman Cross, Table XIII. 
Prestwich, i., p. 37. 
R. Jahrb., 1902, vol. ii., p. 390. 
W. C. Day, 19, A.R. U.S.G.S., vi. (2), p. 214, 1898. 
Q. Joum., 1879, p. 56. 
Dimetian. 
Felsite porphyry. 
Quartz porphyrite. 
Porphyroid. 
Aeg. riebeck granite. 
Pantellerite. 
Pumice. 
Dacite (andesite). 
Granite. 
Granite. 
Pembrokeshire. 
Knock Mahon, Waterford. 
California. 
Charnwood Forest. 
Madagascar. 
Pantellaria. 
Santorin. 
Kasbek, Russia. 
Delaware. 
Ontario. 
R. Jahrb., 1904, voL ii., p. 223. 
Diorite porphyrite. 
Montenegro. 
Q. Joum., 1884, p. 445. 
N. Jahrb., 1904. vol. i., p. 393. 
Roth, Zeitsch. d. d. geol. Gesell., 1864, p. 257. 
iV. Jahrb., 1901, vol. i., p. 242. 
N. Jahrb., 1901, vol. ii., p. 240. 
Doelter, Tscherm. Mitt. (Jahrb. d. a. Reichs .), 
1873, p. 92. 
G- P. Becker, 18, A.R.U.S.G.S., in., p. 45, 1898. 
H. Traube, N.J., 1890, i„ p. 218. 
jV. Jahrb., 1901, vol. ii., p. 62. 
H. Lenk, Btr. G. Mex., ii., p. 132, 1899. 
R- Jahrb., 1901, vol. ii., p. 240. 
Whitman Cross, p. 223. 
H- Ziegenspeck, In. Diss. Jena, p. 46, 1883. 
f. Jahrb., 1893, vol. i., p. 285. 
R Jahrb., 1900, vol. i., p. 393. 
R. Jahrb., 1892, vol. ii., p. 413. 
Andesite. 
Granite. 
Tonalite. 
Quartz monzonite. 
Granodiorite. 
Dacite. 
Diorite. 
Porphyritoid. 
Trachyte. 
Granodiorite. 
Granite. 
Augite andesite. 
Dacite. 
Amphib.- andesite. 
Porphyry. 
Izu San, Japan. 
Lovstakken. 
Tyrol. 
Yosemite YaUey. 
Nevada City. 
Transylvania. 
Alaska. 
Silesia. 
Finland. 
Mexico. 
California. 
Butte, Montana. 
Patagonia. 
Cabo de Gata. 
Dubowka. 
Oberkirclien. 
