114 Proceedings of tlie Eoyal Society of Edinburgh. [Se 
List of 1000 Rocks 
Group. 
Si0 2 . 
TiO s . 
PjO s - 
h 2 o. 
AlA. 
FegOg. 
FeO. 
MgO. 
CaO. 
Na 2 0. 
k 2 o. 
Total. 
Sp.Gr. 
i'-'-i 
•5 
32 
33 
4-9 
4-3 
31 
100*1 
2-4 
2-7 
31 
5'8 
4-1 
1‘7 
99-8 
20 
2*3 
3-7 
5-0 
4-5 
100-1 
1-3 
17-0 
1*7 
2-9 
3-7 
39 
1-3 
100-4 
2-8 
4-6 
2-7 
4-3 
38 
100-2 
17‘0 
29 
23 
33 
6-4 
36 
2-4 
100-4 
2-5*9 
3 0 
35 
32 
5-8 
39 
1*7 
2-77 
170 
1-5 
3-4 
3-8 
5-4 
3-4 
2-0 
99-1 
2-58 
15 5 
2-5 
2-0 
36 
6-8 
4-5 
1-3 
99-5 
160 
1*1 
5-4 
5-0 
37 
11 
99-5 
•4 
18-5 
1-8 
39 
31 
6-4 
4-3 
1*3 
998 
18-0 
31 
2-5 
1-4 
6-8 
4-0 
2-7 
100-2 
57-9 
•8 
•2 
2*9 
17*2 
50 
1-5 
2*8 
6-7 
3-2 
23 
100-6 
2*6.8 
56-9 
•8 
•1 
4.4 
14-9 
2-3 
32 
3-8 
8-8 
34 
2-2 
100-4 
16 rocks 
60-7 
•4 -1 
1*6 
16-4 
2-0 
32 
31 
5-8 
4-3 
2-4 
100-1 
2-65 
±1 
1 
=n 
•1 
±; 
1*2 
±1 
^59 
26 
a b 6 
a a 6 
61'9 
ri 
13-2 
36 
2-3 
4-6 
3-5 
2-7 
6-1 
99-0 
60-3 
*1 
1-7 
15-8 
5-4 
•9 
5-1 
4-7 
4-1 
1*8 
99-9 
60-3 
•7 
18-4 
25 
2-9 
33 
5 5 
30 
3-1 
999 
1-6 
12-1 
106 
52 
4*5 
3-8 
10 
98-6 
59-8 
•7 
1-3 
17*3 
36 
1-2 
3-9 
5 0 
5-1 
100-1 
2*70 
18-2 
65 
6-8 
2*0 
•6 
5 3 
595 
•9 
•3 
■8 
17-2 
2-1 
46 
2-7 
66 
3-5 
23 
100-2 
59-4 
1-4 
•6 
16-7 
2-5 
35 
4-2 
37 
5 0 
1000 
2*61 
58-5 
■7 
•3 
2-2 
16-3 
| 2-1 
3 7 
39 
31 
4-1 
99-5 
580 
55 
12-5 
71 
53 
3-8 
33 
4-8 
100-2 
2*67 
573 
•7 
2-7 
15-7 
4-5 
3-5 
43 
5-4 
40 
1*9 
1000 
56-9 
•8 
•2 
•5 
18*8 
2-1 
43 
4-4 
7-5 
3-9 
•8 
100-2 
568 
1-1 
■4 
1-4 
169 
3 6 
2-9 
3-4 
66 
32 
35 
99-9 
2-67 
56-4 
2-1 
1*3 
12-9 
2-4 
35 
4-1 
7-8 
56-2 
1-4 
•2 
5-4 
17-2 
2-8 
10* 
4-9 
1-8 
4’3 
4-8 
100-2 
2*56 
55 6 
•8 
2-9 
10-7 
2*0 
5-8 
4-6 
1-5 
7 5 
2-67 
. 54-2 
2-7 
2-1 
10-2 
3-5 
•7 
66 
5-0 
1-2 
11-9 
100-2 
2-70 
50-2 
2-3 
1-9 
3 4 
11-3 
33 
1-9 
7-1 
7-4 
1-4 
9-8 
100-0 
2-78 
18 rocks 
57-8 
It 
•3 
| 2-0 
15-1 
3*5 
2-8 
4-6 
4-8 
30 
5-1 
99-8 
2-67 
i-4 
±2-5 
* 
ro 
= 1-9 
1*9 
±8-7 
27 
abb 
aba 
63 0 
•2 
•2 
14-3 
2-8 
5-3 
1-3 
2*7 
4-9 
6-4 
100-9 
2-73 
62-1 
20 
18'0 
36 
•7 
3*6 
6 5 
4-1 
100-6 
610 
1-1 
16-6 
3-6 
3*4 
•1 
3*3 
5-9 
5-2 
100-1 
Classification of Igneous Eocks. 
115 
1907-8.] 
— continued. 
N. Jahrb., 1902, vol. ii., p. 390. 
N. Jahrb., 1905, vol. i., p. 254. 
N. Jahrb., 1903, vol. i., p. 432. 
J. S. Diller, B.U.S.G.S., 148, p. 190, 1897. 
N. Jahrb., 1902, vol. ii., p. 236. 
Q. Joum., 1893, p. 141. 
N. Jahrb., 1905, vol. i., p. 108. 
Q. Journ., 1893, p. 141. 
N. Jahrb., 1900, vol. i., p. 393. 
N. Jahrb., 1905, vol. ii., p. 234. 
N. Jahrb., 1905, vol. i., p. 254. 
W. Cross, 14 A.R.U.S.G.S., ii., p. 227, 1894. 
Weiss and Grebe, Erl. G. Kte. Pr. Bl. Lebach, 
p. 34, 1889. 
N. Jahrb., 1893, vol. ii., p. 339. 
Andesite dacite. 
Hyp. andesite. 
Aug. hornbl. syenite. 
Hornbl. andesite. 
Bronzite andesite. 
Anamesite (andesite). 
Quartz norite. 
Anamesite. 
Amph. andesite. 
Quartz basalt. 
Hyp. andesite. 
Augite diorite. 
Bronzite porphyrite. 
Quartz basalt. 
Tsclieri, Kussia. 
Yellowstone Park. 
Montana. 
California. 
Tibet. 
Capraja, Italy. 
Penmaemnawr. 
Mariupol. 
John Day Basin. 
Wizard, Yellowstone Park. 
Colorado. 
Prussia. 
Mytilene. 
Whitman Cross, Table XII. 
X. H. Winchell, 21, A.R.G., Nh. S. Minn., 
p. 55, 1893. 
N. Jahrb., 1902, vol. ii., p. 390. 
Q. Joum., 1897, p. 45. 
W. Cross, B. U.S.G.S., 168, p. 162, 1900. 
Q. Joum., 1900, p. 689. 
N. Jahrb., 1901, voL ii., p. 240. 
N. Jahrb., 1900, vol. i., p. 71. 
N. Jahrb., 1900, voL i. p. 75. 
Zeitsch. d. d.geol. Gesell., pt. i., 1867-68, xx.,p.331. 
N. Jahrb., 1900, vol. ii., p. 221. 
N. Jahrb., 1905, vol. i., p. 254. 
N. Jahrb., 1900, vol. i., p. 71. 
N. Jahrb., 1901, vol. i., p. 225. 
K. A. Lossen, Jb. Pr. G.L.A., x., p. 290, 1892. 
N. Jahrb., 1903, vol. i., p. 414. 
W. Cross, A.J.S., iv., p. 130, 1897. 
Whitman Cross, Table XII. 
Pyroxene granitite. 
Porphyrite. 
Andesite. 
Volcanic breccia. 
Syenite. 
GJranodiorite. 
Augite latite (lava). 
Mica diorite. 
Augite porphyry. 
Syenite porphyry. 
Basalt. 
Augite latite (lava). 
Mica trachyte. 
Mesokeratophyre. 
Minette. 
Orendite. 
Wyomingite. 
Laveline, Vogesen. 
Minnesota. 
Biota, Kasbek. 
Canada (also 18 and 25). 
Colorado. 
Bun Mahon. 
Donner Pass. 
Sierra Nevada. 
Michigan. 
Svasken. 
Anna Creek, Yellowstone 
Park.^ 
Sierra Nevada. 
Italy. 
Saar-Nahe. 
Student, Bohemia. 
Wyoming. 
Leucite hills, Wyoming. 
N. Jahrb., 1902, vol. ii., p. 399. 
Du pare and Mrazee, Mem. Soc. Phys. Gen., 
xxxiii., No. 1, p. 48, 1898. 
David, Smeeth, and Schofield, V.B. Soc. N.S. TV., 
xxix., p. 473, 1895. 
Umtekite (alkali syenite). 
Protogine. 
Trachyte. 
Beverley, Mass. 
Mt. Blanc. 
Antarctic Continent. 
