138 Proceedings of the Royal Society of Edinburgh. [Sess. 
List of 1000 Rocks 
Group. 
Si0 2 . 
TiO,. 
P 2 0 6 
H 2 0. 
ai 2 o 3 . 
Fe 2 0 3 - 
FeO. 
MgO. 
CaO. 
NaA 
k 2 o. 
Total. 
Sp.Gr. 
50 
b 6 a 
541 
a a b 
7-9 
12-9 
16-6 
6-2 
■4 
1-2 
99-4 
3-30 
50-9 
■1 
13-2 
11 
9-7 
131 
10-2 
1-2 
•3 
99*7 
3-10 
50-6 
•8 
•3 
•9 
79 
1-4 
150 
18-6 
34 
10 
1001 
50-0 
11-7 
2-4 
10*6 
12-8 
11-2 
1-6 
•2 
100-6 
49'6 
•2 
5-0 
13'5 
4-7 
10-7 | 
9-2 
6-2 
100-6 
2-72 
4-2 
37 
9-5 
9-5 
8-5 
2 0 
1-6 
100-4 
2-92 
45-9 
•6 
151 
1-9 
11-5 
14-8 
89 
1-9 
•2 
100-8 
*4 
•2 
13-4 
7*3 
6*6 
11-5 
10-3 
2-2 
•2 
99-9 
42-8 
4-0 
8-7 
18-9 
101 
12-3 
2-3 
•6 
1000 
2-83 
6-2 
109 
3-4 
101 
16-3 
91 
1 
2-88 
42-4 
•5 
*6 
4-4 
13-4 
6-4 
6-5 
11-0 
111 
2-8 
•5 
99-6 
2-96 
71 
2-4 
94 
15*0 
21-4 
3-3 
99-9 
40-6 
4-2 
(5-0) 
12-5 
5-5 
9-5 
90 
10-8 
2*5 
1-2 
100-8 
3 4 
12-8 
4-0 
10-4 
11-9 
10-4 
2-7 
•8 
99-5 
14 rocks 
46-0 
■8 
1 
2-9 
11-2 
3-7 
11-2 
13-3 
8-7 
1-6 
•5 
100-1 
2-96 
±2-2 
±2-5 
±2-3 
1-8 
±5 
±9-7 
51 
b b a 
aba 
536 
139 
15-7 
3-4 
81 
53 
100-7 
3-02 
51‘8 
15*/ 
8*5 
7-3 
5*0 
9-6 
2-2 
1-0 
100-9 
51-1 
51-0 
2-4 
10-9 
12-8 
21-9 
171 
2-4 
5*2 
10-3 
61 
3- 7 
4- 2 
1-2 
102-0 
100-0 
(2-56) 
50 '6 
1-8 
141 
160 
51 
9-2 
2-2 
10 
1000 
50-0 
1*3 
•6 
2*0 
140 
14-2 
60 
100 
35 
•3 
1000 
49-8 
2-6 
12-7 
34 
11-4 
4.4 
8*7 
5-2 
100-7 
2*91 
49-3 
1-6 
14-5 
161 
57 
91 
3-0 
1-2 
100-6 
49-1 
•8 
•8 
6-8 
12-6 
32 
2-5 
1-3 
99-5 
49 1 
48-4 
■6 
1-3 
•5 
•3 
10 
12*0 
15-5 
6*2 
4-8 
79 
7-8 
7- 6 
8- 2 
106 
3*9 
30 
2-0 
1-0 
100-4 
100-2 
(2-33) 
2-97 
1*4 
13-9 
96 
4-2 
6-8 
9 ! 
3-5 
1*0 
99-7 
313 
47 ‘5 
21 
12-5 
81 
7.4 
8-4 
101 
3-9 
3-02 
46-9 
•9 
1-2 
11-8 
11*7 
4-6 
6 6 
10-7 
3-7 
•4 
98 0 
44-8 
5-3 
•3 
(1-2) 
12-5 | 
4-6 
13-2 
5-4 
10-2 
2*5 
10 
100-7 
3-09 
4.4 
m l 
35 
12-2 
91 
11-4 
2-7 
•8 
100-0 
1 
16 rocks 
491 
•9 1 
1-3 
13-3 
6-8 
92 
5-8 
9-4 
3’4 
•9 
100-2 
3-02 
±1- 
±11 
±T 
■5 
±2-2 
±•8 
±6-9 
(2*45) 
52 
b b a 
abb 
48*2 I 
4-3 
161 
36 
12-8 
7-6 
10-0 
? 
? 
98-3 
16-6 
41 
8*8 
94 
8-2 
2-2 
•7 
99-8 
2’99 
62 
13 ‘5 
11-8 
45 
11-6 
4-8 
2-3 
(2-56) 
1907-8.] Classification of Igneous Rooks. 139 
— continued . 
G. P. Merrill, Pr. U.S. Nat. Mus ., xvii., p. 
662, 1895. 
N. Jahrb., 1892, vol. ii., p. 427. 
B. K. Emerson, B. U.S.G.S. , 148, p. 77, 1897. 
Q. Journ., 1895, p. 318. 
N. Jahrb., 1893, p. 287. 
Q. Journ., 1883, p. 296. 
Q. Journ., 1883, p. 257. 
L. v. John, Jb. G.R.A. Wien, xlvi., p. 291, 
1896. 
Rosenbusch, loc. cit., p. 54. 
Q. Journ., 1883, p. 256. 
Geol. Gesellscliaft, vol. lvi., p. 18. 
N. Jahrb., 1903-4, suppl., p. 292. 
W. C. Brogger, Q.J.G.S.L. , p. 26, 1894. 
Hatch, Petrology, p. 203. 
Websterite. 
01. hyp. diabase. 
Wehrlite. 
Basic glass. 
Diabase. 
Basic tuff. 
Picrite. 
Basalt. 
Limburgite. 
Hombl. picrite. 
Basalt. 
Picrite (partly serpen- 
tinised). 
Camptonite. 
Augitite. 
Montana. 
Culpeper Co., Virginia, 
Massachusetts. 
Challenger Expedition, 297. 
Bavenna. 
St Davids. 
Ottenschlag. 
Limburg. 
Siebengebirge. 
Nanzenbach. 
Norway. 
Garlton Hills. 
T. H. Holland. 
A. H. Phillips, A.J.S., xlvii., p. 473, 1894. 
Q. Journ., 1884, p. 450. 
A r . Jahrb., 1906, suppl., p. 314. 
Rutley, p. 255. 
A. Geikie, p. 149. 
Q. Jn irn., 1904, p. 481 (Teall). 
U. Jahrb., 1901, vol. ii., p. 62. 
N. Jahrb., 1901, vol. i., p. 72. 
A. Jahrb., 1900, vol. ii., p. 232. 
W. Cross, B. U.S.G.S., 168, p. 171, 1900. 
17. Jahrb., 1905, vol. ii., p. 62. 
P. Giacomelli, Soc. Alp. Tridmt., xix., p. 410, 
1894. 
N- Jahrb., 1903-4, suppl., 18 p. 466. 
j. F. Kemp, >18, A.R. V.S.O.S., iii., p. 407, 1899. 
Merrill, p. 223. 
Norite. 
Basalt, stalagmite. 
Basalt. 
Diabase, intrusive. 
Dolerite, average. 
Dolerite, average. 
Dolerite. 
Uralite porphyry. 
Basalt. 
Basalt lava (vitrophyric). 
Plagioclase basalt. 
Amphibolite. 
Basalt. 
Basalt. 
Gabbro. 
Basalt. 
Madras. 
Hawaii. 
Funabara, Japan. 
Hartenrod. 
Tammerfors, Finland. 
Cape Weissenfels, Sweden. 
Puebla, Mexico. 
New Mexico. 
Uinbau8en. 
Tyrol. 
Schliichtern. 
New York. 
Bohemia. 
P. Jahrb., 1904, vol. i., p. 69. 
Q- Journ., 1883, p. 303. 
N. Jahrb., 1906, vol. ii., p. 310. 
Eclogite, light green. 
Diabase. 
Diabase glass. 
Aiguilles Rouges. 
ClegyT Foig, St Davids. 
Homertshausen. 
