146 Proceedings of the Royal Society of Edinburgh. [Sess. 
List of 1000 Rocks 
Group. 
Si0 2 . 
Ti0 2 . P 2 0 6 . 
h 2 o. 
AI2O3. 
FeA 
FeO. 
MgO. 
CaO. 
Na^O. 
k 2 o. 
Total. 
5p.Gr. 
59 
4 9 
7-0 
236 
6-0 
1-3 
■8 
99-1 
38-8 
•9 
99 
6-8 
8-8 
2-0 
26-3 
39 
•8 
26 
100-8 
12 rocks 
41'6 
•4 -1 
4-7 
92 
55 8’0 
22-0 
6-8 
1-1 -8 
100-1 
3-16 
± i -6 
±1-5 
±2*3 
±2-2 
±1-0 
±8-6 
60 
1) b b 
a 6 6 
40-0 
4 3 
83 
20 
120 
2V ‘6 
4-2 
■7 
•3 
99-8 
2-99 
5-7 
4-9 
4-8 
11-9 
29-2 
4-2 
99 -G 
2-93 
5-1 
5 0 
89 
8*0 
269 
•4 
•5 
98-6 
31-8 
25 
1-4 
156 
14-3 
331 
•9 
99-6 
4 rocks 
37-0 
•2 
4-3 
4-9 
7-8 
11-8 
29-3 
3-8 
•3 
■2 
99-4 
3-00 
±3-8 
±1-8 
±£ 
>■4 
' ± 
•5 
■5 
±12-0 
61 
HHss 
51-3 
136 
•5 
8-5 
12*7 
12-4 
1-4 
•3 
100-8 
50-4 
1-0 
8-7 
11 
6-5 
17-6 
11-6 
3-0 
•5 
100-3 
501 
2*6 
6-9 
2-1 
5-3 
162 
16‘7 
•7 
100-6 
3-09 
50-0 
1*3 
15-4 
67 
10-0 
14-9 
1-8 
•3 
100-4 
491 
•2 
8-5 
6- 
20'8 
129 
1-7 
■6 
100-1 
48-4 
•7 '5 
2-8 
11-6 
4-1 
36 
126 
8-1 
4-1 
3-2 
99-9 
47-0 
1-5 *2 
(•6) 
10‘0 
10 
10'5 
11-5 
14-5 
32 
■3 
100-3 
■8 1-5 
1-3 
10-0 
35 
8-5 
9-7 
13*2 
1-8 
3*8 
100-9 
46-6 
•4 
9-5 
3-4 
9*1 
13-5 
15-8 
1-7 
100-0 
46-2 
3-4 
139 
53 
1-8 
11-6 
15-7 
1*1 
•3 
99-2 
45-5 
•2 -4 
(•2) 
19-3 
•5 
4-2 
10-1 
16-7 
23 
•6 
100-0 
43-4 
6-7 
94 
8-9 
10-4 
15-4 
1-5 
3-2 
98-8 
42-3 
1-5 
25 
12-7 
10-6 
127 
13-0 
2-7 
•9 
98-9 
36-5 
(5-2) 
3 4 
8-2 
8-3 
73 
8-2 
18-9 
2-1 
ri 
99-2 
14 rocks 
46-7 
■7 -2 
1^7 
11-3 
3-4 
5-7 
12*7 
143 
2-1 1-1 
100-0 
3-09 
±1-9 
±2-7 
± 
2-5 
±2-5 
± 
1-3 
±10-9 
62 
6 6 6 6 a 6 
47-3 
•8 '6 
2-1 
11-2 
2-9 
5-9 
16-0 
7*3 
1-9 
3-8 
99-9 
473 
16-9 
1-6 
2*7 
21-0 
8-6 
1*2 
•4 
99-9 
47-1 
17-0 
1-6 
36 
199 
92 
*5 
•3 
100-0 
44-4 
17-6 
1-4 
3-9 
151 
160 
•8 
•1 
100-0 
43-8 
23 *5 
1*0 
10-9 
3 - 5 
10-1 
12-8 
13-8 
22 
•3 
101-2 
42-4 
1-8 1-0 
1'8 
12-3 
3-9 
13-1 
12-7 
2-7 
1-0 
100-0 
423 
1-2 
15-4 
2-7 
60 
193 
12-0 
■2 
100-1 
41-4 
•3 
1-1 
9-8 
3-3 
5-2 
13-4 
1*6 
7-4 
100-1 
2 : 7«; 
40-8 
■3 
5-2 
11-9 
10*4 
14-2 
18-4 
101-2 
38-7 
6-9 
10-2 
6-3 
6-1 
18-6 
10-4 
1-5 
1*6 
100-3 
38 3 
1-6 '2 
5-4 
9-8 
4-3 
6-4 
17-4 
103 
2-9 
2-1 
99-2 
2-99 
1907-8.] Classification of Igneous Rocks. 147 
I —continued. 
Q. Jowm., 1883, p. 257. 
N. Jahrb., 1893, vol. ii., p. 347. 
Picrite. 
Picrite porphyrite. 
Solile. 
Arkansas. 
N. Jahrb., 1903-4, suppl., p. 292. 
N. Jahrb., 1903-4, suppl., p. 292. 
Q. Journ., 1883, p. 257. 
N. Jahrb., 1902, vol. it, p. 387. 
Picrite. 
Picrite. 
Picrite. 
Dunite. 
W ommelshausen. 
Sckwarzen Steinen. 
Scbwarzenstein. 
Ural 
N. Jahrb., 1892, vol ii., p. 427. 
G. F. Becker, M. U.S.G.S., xiil, p. 101, 1888. 
N. Jahrb., 1904, vol. i., p. 49. 
Lasaulx, Elemente d. Petrog., p. 312. 
N. Jahrb., 1895, vol. ii., p. 267. 
N. Jahrb., 1903, vol. i., p. 432. 
N. Jahrb., 1904, vol ii., p. 399 
Whitman Cross, Table XII. 
N. Jahrb., 1902, vol. ii., p. 387. 
R. Lepsius, G. v. Attika. Berl . , 1893, p. 98. 
N. Jahrb., 1904, vol. ii., p. 399. 
L. Brugnatelli, B. Com. G. Ital., xiv., p. 318, 
1883. 
N. Jahrb., 1903-4, suppl. 18, p. 465. 
N. Jahrb., 1893, voL ii., p. 347. 
Hyp. diabase. 
Pseudo-diorite. 
Gabbro. 
Gabbro. 
Lberzolite. 
Analcime basalt. 
Eclogite. 
Shonkinite. 
Olivine gabbro (mean of 2). 
Gabbro. 
Olivine gabbro. 
Melilite pyroxene rock. 
Limburgite. 
Elaeolite syenite. 
Culpeper County. 
California. 
Student. 
Buchan. 
Tuc d’Ess. 
Montana. 
Holsenoe, Norway. 
Square Butte, Mont. 
Ural. 
Greece. 
Skeie, Norway. 
Italy. 
Elsass. 
Arkansas. 
Hague and Jagger, B. U.S.G.S., 168, p. 97, 1901. 
JnM., 1903, vol. i., p. 417. 
N- Jahrb., 1903, vol. i., p. 417. 
"■ Jahr K 1903, vol. )., p. 417. 
C. v John, Jb. OJt.A. Wien, xlvi., p. 284, 1896. 
Whitman Cross, p. 171. 
"• Jahrb., 1903, vol. i., p. 417. 
U. Kosenhusch, Sb. Berl. Acail., 1899, p. 113. 
"• Jal ‘rb., 1902, vol. ii., p. 388. 
Q- Jowrm., 1883, p. 257. 
"• Jahr K 1902, vol. ii., p. 401. 
Leucite absarokite 
Arikgite. 
Arifcgite. 
Arifcgite. 
Dolerite. 
Neplielite basanite. 
Arifegite. 
Euctolite. 
Koswite pyroxenite (mean 
of 2). 
Picrite. 
Limburgite. 
Yellowstone Park. 
Llierz, France. 
Lherz, France. 
Llierz, France. 
Cape Verde Islands. 
Colfax Co., N. Mexico. 
Lherz, France. 
Umbria. 
Ural. 
Sckonau. 
Cabo Frio, Brazil. 
