la Atomic Volume of some Minerals. 243 
i 
: A. B. 0 
: ’ 1. Andalusite, 962°5 1925 41°85 
2. Spodumene, 32167 1693 43°47 
1, Leucopyrite—As, a single atom, 17847 see 89°24 
& As, a double atom, ie ‘ 59°49 
2. Mispickel —As, a single atom, 333 ‘ 666 
As, a double atom, a Ag 555 
8. White iron pyrites, (as above,) loTee ss 52°52 
4. Olivenite, 829°%4 = «187-12 51-42 
5. Libethenite, 80848 13474 5053 
1. Arragonite, 116°10’, 216° 108 43-2 
2. White lead ore, 117918’, 253 1265 50°6 
3 Strontianite, 117°19/ 252 126 50°54 
4 Witherite, 118°30/, 2864 143°2 57°3 
5. Nitrate of potash, 119°, 652°5 826°2 81°56 
6. Bournonite, 115°16’ 8223°3 5; ay 975 
1. Copper glance, 19°36), 174° ca Ses 
1. Brittle silver ore, 1771 a 110°7 
4. Crystallization dimetric. 
1, Scheelite, Sr rag of lime,) 301°6 150°8 503 
2. Tungstate of lead, 8559 =177°9 59°3 
3. F 967°5 1382 57-0 
1. Zircon, 87038 18515 4115 
2. Rutile, ine Pr, 40°7 
3. Tin ore, : 134-4 Ba 44°8 
1. Scapolite, 17294 «1921 
2. Meionite, 15582 194'8 55°65 
3. Wernerite, 1909 =: 190°9 516 
4. Dipyre, 2816 «2011 55-21 
5. “eden 2133 194° 52 
6. Werneri 13711 196° 52-7 
7. Gehlenite iecanaianiiy analysis), 25053 1566 5118 
I. aa 84816 14136 4464 
1. A 134-0 44°66 
2. ea. cnielavies 2613 130°65 
5. Crystallization monometric. 
: 1. Leucite, 3348 2388 «= 6308 
2. Analcime, 40577 20288 62:48 
j 3. Haiiyne, 29022 2073 59°23 
4.N 2738-36 2282 63°68 
5. Sodalite—Sp. gr.—=2-29, 2682: 244: 68°77 
Sp. gr.—=2'37, —_ 
Conclusions from the ake nae facts. 
I. The law of Isomorphism, in view of the facts detailed, has 
Sreatly widened limits. It includes the received law—Like or 
homologous compounds of isomorphous elements are isomorph- 
