Proceedings of the Royal Society of Edinburgh. [Sess. 
List of 1000 Rocks 
Group. 
SiOj, 
Ti0 2 . P 2 0 6 
HjO. 
A1 2 0 3 . 
Fe 2 0,. 
FcO. 
MgO. 
Cao. 
Na 2 0. 
k 2 o. 
Total. 
Sp.Gr. 
11 
710 
•5 
1-7 
15-4 
•7 
•7 
•2 
■4 
32 ' 
62 
100-0 
709 
1-5 
16-4 
■4 
•3 
4-5 
5-5 
100-1 
707 
■6 
15-2 
3'8 
33 
4-7 
2-3 
101-0 
2-67? 
70-5 
•5 
16-0 
•8 
1-8 
•8 
2-6 
3*8 
36 
100-3 
70-4 
■2 -1 
•5 
15-5 
10 
1-3 
30 
2‘8 
5-1 
100-3 
70-2 
•1 
2-2 
150 
?,-o 
•2 
•3 
5-0 
5 0 
100-4 
70-1 
•5 *1 
•3 
15-2 
1*1 
•7 
2-4 
5-2 
2-6 
100-0 
•3 
2*3 
130 
2-3 
1-9 
•2 
1-2 
3-1 
5-8 
99-8 | 
•8 
15-2 
1*7 
•6 
•9 
2-0 . 
5-1 
4-5 
100-3 
2-4 
151 
31 
11 
2-1 
3’8 
4-2 
1009 
2*54 
•8 
161 
2-6 
11 
3-2 
4’0 
1-8 
100-0 
2-65? 
690 
•3 
1-3 
16-1 
2-5 
1-0 
•4 
1-3 
5-4 
33 
100-5 
2-66 
ro? 
15-5 
2-5 
1-0 
2-1 
4-7 
37 
100-0 
682 
•5 -1 
•5 
15'6 
2*3 
1-0 
2*8 
5-2 
2-5 
99-7 
679 
•2 -1 
1-3 
17-3 
2-4 
•3 
•7 
30 
5-1 
1-7 
100-1 
65-0 
•5 -1 
43 
13-7 
•4 
2-2 
•8 
4-4 
3 7 
4-8 
100-1 
2 ‘62 
646 
•3 -1 
5-6 
136 
1-2 
1-2 
•7 
5-1 
35 
4*1 
100-0 
2-59 
29 rocks 
70-2 
•2 
1*2 
14-8 
1-7 -9 
•6 
1-8 
4-5 
4-3 
100-2 
±1*1 
a b b 
±•9 
^•7 
* 
VS 
' H 
LO 
±5-0 
2-63 
(2-40) 
12 
a a b 
71-2 
1-1 
13-4 
1-4 
1*3 
•5 
•3 
2-0 
9-8 
100-9 
71-0 
1-5 
14-2 
■8 
•7 
1-1 
*7 
96 
99-6 
2 "61 
70-8 
•2 
•9 
15-8 
1*3 
34 
6-7 
100-6 
2-60 
70-4 
•7 
16-2 
2-5 
•9 
2-1 
3-5 
4*3 
100-3 
70-0 
•2 -1 
1-7 
15-1 
•4 
11 
•6 
1-6 
2-7 
6-4 
100-1 
69’9 
•2 
•6 
15-7 
4-7 
'9 
1-8 
43 
3-2 
101-3 
2*69 
69-6 
1*6 
13-7 
2-0 
2-4 
•3 
16 
3-6 
5-2 
100-0 
2-60 
•3 -1 
1-0 
15-5 
1-7 
1-3 
•4 
1-3 
4-5 
4-7 
68-6 
•8? 
• 16"2 
2-3 
•5 
1-0 
2*4 
41 
4-1 
ioo-o 
67-9 
37 
15-7 
30 
1-5 
1-4 
1-5 
5-6 
100-3 
67-4 
•5 
15-6 
3-1 
•6 
1-9 
2-5 
71 
98-7 
67*4 
•6 -1 
155 
1-8 
2-2 
1*1 
3-6 
3-5 
3-7 
100-2 
673 
•3 
2-4 
15-8 
1*9 
2-2 
•7 
2-4 
3-8 
36 
100-1 
67-1 
•5 -2 
•7 
150 
1'6 
2-3 
1*7 
35 
2-8 
999 
67-0 
1-0 
16-1 
4-7 
1-2 
1-2 
31 
2-0 
4-6 
100-9 
66-7 
31 
16-7 
2-1 
■9 
1-2 
1-4 
2-5 
5-2 
99-7 
66‘6 
2-8 
15'1 
•7 
31 
1-4 
1-5 
2-0 
6*7 
99-9 
1*2 
15-3 
5-4 
2-6 
•9 
2-8 
4-6 
99-1 
65-7 
•7 3 
•6 
15-3 
2’5 
1-6 
1-6 
2-7 
36 
4-6 
99-5 
2*72 
62-2 
•5 *2 
5-9 
14-7 
3*8 
•4 
1*9 
2-9 
2-8 
5-0 
100-4 
2-63 
20 rocks 
68-1 
•2 *2 
1-6 
15-3 
2-4 1-1 
1*1 
1-8 
2-9 
5*5^ 
100-1 
2-66 
±1*4 
±•6 
±■9 
VO 
±] 
.0 
±4-9 
13 
a ail a a 
71-6 | 
1 
12-8 
•1 
1-5 
3-8 
9-7 
99-7 
70-3 
1 
•7 
163 
■8 
•2 
3-7 
5-9 
4*2 
99-1 
Classification of Igneous Rocks. 
103 
L 907 — 8.] 
continued. 
Q. /front., 1901, p. 36. 
Zeitsch. d. d. geol. Gesell, pt. i., 1867-68, xx., p.328. 
Hatcli, Petrology , p. 113 (Sollas). 
C E Keyes, 15, A.R.U.S.G.S., p. 697, 1895. 
H. W. Turner, J.G., vii., p. 143, 1889. 
,T H. Sears, xvi., p. 170, 1890. 
N. Jahrb., 1905, vol. i., p. 254. 
N. Jakrb., 1900, vol. ii., p. 221. 
L. Milch, Z.D.G.G., L.I., p. 69, 1899. 
N. Jahrb., 1901, supp. 14, p, 38. 
Judd Roy. Soc., Kralcatoa report, pt. i., p. 32. 
A r . Jahrb., 1893, vol. ii., p. 100. 
Q. /front., 1891, p. 278. 
N. Jahrb., 1905, vol. i., p. 254. 
J. S. Diller, B.U.S.G.S., 148, p. 195, 1897. 
N. Jahrb., 1892, vol. ii, p. 413. 
N. Jahrb., 1892, vol. ii., p. 413. 
Rhyolitic rock, tuffaceous. 
Quartz porphyry. 
Biotite granite. 
Biotite granite. 
Keratophyre. 
Hyp. dacite. 
Felsite porphyry. 
Quartz trachyte andesite. 
Porphyroid. 
Hyperst. aug. andesite. 
Quartz porphyry. 
Granite. 
Hyp. dacite. 
Hornbl. andesite. 
Quartz porphyry. 
Quartz porphyry. 
Westmoreland. 
Toscana. 
Aughreni. 
Maryland. 
Amador Co. 
Massachusetts. 
Yellowstone Park. 
Gorgviker. 
Sumatra. 
Harz. 
Krakatoa. 
Miihlental. 
Shapfell. 
Yellowstone Park. 
California. 
Saar Nahe. 
Munster a/St. 
N. Jahrb., 1893, vol. i., p. 285. 
Q. Join 11., 1900, p. 679. 
H. Loretz, Jb. Pr. G.L.A., ix. p. 295, 1889. 
Duparc, Pearce, and Ritter, M. Soc. Phys. Gen., 
xxxiii., No. 2, p. 18, 1900. 
W. H. Weed, B.U.S.G.S. , 168, p. 119, 1900. 
N. Jahrb., 1906, vol. i. 
Q. Joum., 1906, p. 107. 
Dartonand Keith, A.G.S., vi., p. 307, 1898. 
Q. Joum., 1891, p. 276 (Cohen). 
Q. Joum., 1901, p. lxxxiii. 
N. Jahrb., 1901, ii., p. 62. 
N. Jahrb, 1901, vol. ii., p. 240. 
W. Cross, 14, A.R.U.S.G.S., p. 227, 1894. 
W. H. Weed, J.G., vii., p. 739, 1809. 
N. Jahrb., 1904, vel. i., p. 65. 
N. Jahrb., 1892, vol. i., p. 326. 
A. Schmidt, cf. N.J., 1889, i., p. 95. 
iV. Jahrb., 1895, vol. ii., p. 100. 
W. Cross, Telluride folio U.S., U.S.G.S., p. 6, 
1899. 
A r . Jahrb., 1892, vol. ii., p. 413. 
Liparite. 
Felsite (brown, compact). 
Quartz porphyry. 
Tourmaline granite. 
Quartz porphyry. 
Normal granite. 
Quartz felsite. 
Felsophyre. 
Granitite. 
Quartz felsite (Waller’s 
analysis). 
Orthoclase porphyry. 
Granodiorite. 
Quartz porphyrite. 
Granite. 
Granite. 
Porphyry, schistose. 
Porphyry. 
Kersautite. 
Quartz monzonite. 
Quartz porphyry. 
Cabo de Gata. 
Co. Waterford. 
Baden. 
Algeria. 
Montana. 
Campo, Elba. 
S. America. 
Virginia. 
Shapfell. 
Cheviots. 
Teiske, Finland. 
Silverlake, Eldorado. 
Colorado. 
Montana. 
Steiermark. 
Michigan. 
Munstertal. 
Balme. 
Colorado. 
Kreutznach. 
H. Bergliell, Finl. G. Und. Bl., 23, p. 18, 1892. 
N. Jahrb., 1904, vol. i., p. 70. 
Microcline granite. 
Granulite adds too high. 
Finland. 
Aiguilles Rouges. 
