122 Proceedings of the Royal Society of Edinburgh. [Sess. 
List of 1000 Rocks 
Group. 
SiO„. 
Ti0 2 . 
P 2 0 6 . 
H,0. 
A1 2 0 3 . 
Fe 2 0„. 
FeO. 
MgO. 
CaO. 
Na 2 0. 
K 2 0. 
Total. 
Sp.Gr. 
33 
53 4 
51 
11-5 
8-4 
(4*9) 
2-6 
13*2 
■7 
*6 
100-4 
2-74 
51-3 
1*4 
(2-D) 
15 5 
32 
71 
4-4 
9*2 
3-S 
1-2 
100-0 
2-92 
25 rocks 
576 
•4 
■2 
1-7 
161 
49 
3*7 
37 
7*4 
30 
1-4 
100-1 
2-79 
±i*i 
±1*4 
±1*6 
! ±: 
1-4 
±'*9 
±6-4 
34 
b a a 
a a b 
59-7 
2-1 
162 
1*9 
8*6 
2-7 
4-8 I 
1*0 
3*1 
100-3 
57-4 
•8 
16*9 
2-5 
5-2 
5 5 
7*3 
33 
1-9 
100-7 
57-4 
*7 
15-7 
2*1 
5*2 
8-8 
4*9 
3*1 
1-5 
99-9 
2-83 
56-8 
1*5 
16*7 
38 
4*6 
6*4 
3-4 
2-8 
99-9 
2-66 
•2 
18-8 
•2 
70 
5-6 
2-3 
100-0 
2-88 
56-4 
1*1 
2-3 
16-8 
33 
7*1 
3*5 
5-6 
1-2 
3*1 
100-4 
2-63 
I'M 
16*1 
4-9 
4-4 
4-6 
3*0 
2*4 
99-9 
2-74 
56-0 
•7 
12-5 
*5 
15*9 
6-1 
4*2 
20 
*7 
99-3 
55-8 
ri 
•2 
1*3 
17-1 
4-1 
3*8 
5-1 
7*4 
2-9 
1-7 
100-4 
55-4 
1-2 
16*8 
9*3 
5-2 
7*6 
3*6 
1-4 
100-5 
54-0 
1*3 
13*9 
15*4 
3*8 
9*8 
1-1 
100*0 
2-90? 
54-0 
•9 
*1 
16*7 
1*4 
7*7 
5-7 
8*8 
3-0 
‘7 
99-7 
53-8 
1-7 
*3 
1'8 
15*8 
6*9 
4-3 
5-6 
7*7 
30 
*7 
101-5 
2*91 
53-5 
2-4 
13*4 
16*7 
3*1 
10-9 
100 0 
52-8 
2*1 
•5 
1-0 
12-5 
9*1 
4-5 
8-1 
2*6 
2 - 4 
99-6 
52-4 
1-1 
13*6 
2-7 
10*1 
5-5 
10*0 
2-3 
•4 
100-0 
52-2 
1*4 
■5 
•3 
14-6 
108 
3*2 
50 
8*7 
1*8 
*6 
99*1 
52-2 
2-1 
•1 
1-1 
12-2 
10*1 
2-9 
5-5 
7*1 
3*8 
2-2 
99-3 
51-3 
1-5 
12-0 
5-7 
9*7 
*6 
1-4 
99-8 
2-95 
51-2 
'2-4 
*3 
1*6 
14-1 
4-6 
8 9 
8-3 
2-6 
1*3 
2-98 
50-7 
2*8 
2 0 
14-1 
8*3 
4-6 
6*6 
7*7 
2-7 
1-2 
100-7 
49-8 
30 
1*4 
14-1 
14-9 
*1 
5*6 
9*4 
1*7 
100-0 
49-6 
2-3 
•3 
3*6 
15-1 
1*7 
7*3 
4-2 
•9 
100-3 
49-0 
2-8 
3*3 
15-3 
2-6 
8-2 
4-9 
8*2 
2-5 
2-6 
99-4 
24 rocks 
53-9 1 
•9 
■3 
1*5 
15-3 
5 0 
6*4 
5-1 
7-7 
2-4 
1*5 
1000 
783 
±1-6 
±1*5 
^~±2- 
■4 
±] 
L*3 
±rs 
±8*0 
35 
b a a 
a b a 
57-2 
161 
13*0 
2*2 
5-8 
3*9 
1*8 
100-0 
2-80 
570 
•3 
2*3 
146 
9*2 
4*9 
1*6 
4-6 
4-9 
*8 
100-3 
56-8 
1*4 
•4 
•4 
14-3 
5-8 
9*5 
1*6 
1*7 
100-6 
302 
567 
*7 
169 
4-1 
63 
4-6 
7-2 
4-6 
■6 
101-7 
562 
2*2 
ri 
*8 
9 9 
1*8 
5*4 
2-8 
2-8 
100*0 
558 
2-4 
16-0 
12-5 
2-2 
7*1 
2-2 
1*9 
100*1 
2*70 
55-7 
23 
17*5 
5 2 
4*7 
29 
6*7 
2-4 
2-1 
99-5 
538 
3*3 
18-4 
8*3 
5-6 
3*2 
7*0 
1*2 
100-8 
53-7 
1*6 
18-2 
10-6 
5*2 
6*7 
2-7 
1*0 
99-6 
525 
1*3 
*3 
1*2 
155 
9*8 
2-6 
7*3 
3*3 
1-8 
100-5 
2*83 
52-4 
*2 
2*3 
15-1 
2-3 
10*1 
5*4 
7*3 
4-0 
•9 
100-0 1 
2-97 
Classification of Igneous Rocks. 
123 
1907 - 8 .]. 
— continued. 
Q. Journ ., 1904, p. 481. 
Zeitsch. d. d. geol. Gesell., xix. part ii., p. 340. 
Palagonite tuff. 
Anamesite (mean of 2). 
Pontesford Hill. 
Dietesheim, Hessen. 
C. Klein, Sb. Berl. Akad., 1888, p. 113. 
J. P. Iddings, 12, A.R.U.S.G.S., i., p. 627, 
1891. 
G. F. Becker, M.U.S.G.S. , xiii., p. 159, 1888. 
Q. Journ., 1893, p. 141. 
W. Cross, B.U.S.G.S., 148, p. 159, 1897. 
C. Klein, Sb. Berl. Akad., p. 119, 1888. 
W. Cross, B.U.S.G.S., i., p. 26, 1883. 
A. Hamberg, G.F.F., xxi., p. 523, 1899. 
J. P. Iddings, 12, A.R.U.S.G.S., i., p. 648, 
1891. 
C. v. John, Jb. Wien. G.R.A., xxxviii., p. 350, 
1888. 
Roth’s Beitrdge zur Petrog ., 1873, p. xlvi. 
Q. Journ., 1905, p. 589. 
N. Jakrb., 1892, vol. i., p. 278. 
J. Siemiradzki, N.J., 1886, ii., p. 176. 
N. Jahrb., 1904. 
W. H. Hobbs, B.U.S.G.S., 168, p. 35, 1900. 
N. Jahrb., 1903-4, suppl. 18, p. 467. 
N. Jahrb., 1903-4, suppl. 18, p. 467. 
Q, Journ., 1884, p. 235. 
Q. Journ., 1884, p. 654. 
N. Jahrb., 1903-4, suppl. 18, p. 467. 
Q. Journ., 1884, p. 654. 
iV. Jahrb., 1903, vol. i., p. 430. 
Hatch, Petrology , p. 179. 
Leucite phonolite. 
Pyroxene porpbyrite. 
Basalt. 
Anamesite. 
Porphyry. 
Augite andesite. 
Hyp. andesite. 
Hyp. andesite. 
Pyroxene andesite. 
Augite diorite. 
Olivine basalt. 
Hypersthene gabbro. 
Plagioclase basalt. 
Dolerite. 
Olivine basalt. 
Dolerite Sckliichtem. 
Dolerite Schliichtern. 
Basaltic dyke. 
Dolerite -without olivine. 
Dolerite. 
Diabase. 
Diabase. 
Dolerite. 
L. Bolsena, Italy. 
Yellowstone Park. 
California. 
Capraja. 
Colorado. 
Italy. 
Colorado. 
Spitzbergen. 
Yellowstone Park. 
Hungary. 
Java. 
Pennsylvania. 
Buhl, near Cassel. 
West Indies. 
Breitfiirst. 
Connecticut. 
Ofleiden. 
Ofleiden. 
Helt. 
Whinsill, Durham. 
Ofleiden. 
Eisfjord. 
Avoostock. 
A. Geikie, p. 167, third edit. 
At Jahrb., 1904, vol. ii., p. 223. 
A T . Jahrb., 1901, vol. i., p. 245. 
Q. Journ., 1905, p. 589. 
A. H. Brooks, B‘U.S.B.S., 168, p. 55, 1900. 
Q. Journ., 1893, p. 545. 
Hatch, Petrology, p. 147. 
N. Jahrb., 1902, vol. ii., p. 237. 
J. J. H. Teal], Q.J.G.S., xl., p. 240, 1884. 
A. N. Winched, A.B., xxvi., p. 293, 1897. 
W. C. Day, 18, A.B.U.S.a.U., v„ p. 958, 1897. 
Augite andesite, average. 
Diorite porphyrite. 
Trap. 
Hypersthene norite. 
Quartz gabbro. 
Augite andesite. 
Diorite. 
Apoandesite. 
Diabase. 
Orthoclase gabbro. 
Diabase. 
Montenegro. 
Rocky Hill. 
Tyrol. 
Georgia. 
Arrau. 
Charnwood Forest. 
Neposet Valley, Mass. 
Bellingham, England. 
Minnesota. 
Connecticut. 
