[I9I4.] 



164 



Ootheca. — Nathovst, A, G., 4. 



Opal. — Lacvoix, A., 9. 



Opercule. — Jukovski, E. 



OpercuUna. ■ — Checchia - Rispoli, G. : 



Ratten, L., 2 ; Smith, AV. 0. 

 Op/i/f/cofi'o?*.— Williston, S. W., 2. 

 Ophiaraclina. — Speucer, W. K., 2. 

 Ophiceras. — Dieiier, C. 

 Ophwderma.—Sc\).'6w^oxi, 3. 

 Oplniu-ida, Carboniferous. — Schondorf, 



F., 2 ; Schucliert, C. ; Sollas, I. B. J. 



, Palaeozoic. — Spencer, W. K., 2. 



, Triassic— Schondorf, F., 3. 



Opliryaster. — Spencer, W. K. 

 OploncBScJina. — Cockerell, T. D. A., 2. 

 Oppelia. — Douville, R., 3. 

 Oppeliidae, classification of. — Douville, 



R., 2&3. • 

 Oppmana district (Scania). — Sandegren, 



R. 



Ora Banda (W. Austr.).— Jutson, J. T. 

 Oran (Arprentina). — Carles, E. de. 

 Orange Free State. — Penny, F. W. ; 



Rudge, W. A. 1). ; Shand, S. J., 4. 

 Orhiculoidea. — Clarke, J. i\r. 

 Orhitoides. — Cotter, G. de P. 

 Orhitolites.—^miili, W. D. 

 Ordovician, Esthonia. — Born, A. 



, Gal\va^^ — Gardiner, C. I. 



■ , Iowa. — Slocum, A. W. 



, Loire-Inferieure.- — Kerforne, F., 4. 



, Newfoundland. — Van Ingen, G. 



, New York — Cushing. H'. P. 



, Ontario.— Raymond, P. E., 10. 



, Ottawa.— Kindle, E. M., 5. 



, Pembrokeshire. — -Elles, G. L. 



, Quebec— Raymond, P. E., 6 & 10. 



, Shan^States.— La Tonche, T. H. D. 



, Yunnan. — Brown, J. C, 2. 



igneous rocks. — Cox, A. H. 



, shelly & graptolitic faunas of. — 



Elles, G:L.,2. 

 Ordoyician-Silurian boundary. — Ulrich, 



E. 0., 2. 



' Ore,' the term.— Goodchild, W. H. 



Ore-bearing currents, mine-water com- 

 position and. — Lane, A. C, 4. 



Ore-bearing rocks, Sweden. — Sjogren, 

 H., 2. 



Ore-deposits, Altai. — Mayer, G. 



, Arizona. — Douglas, James. 



, British Columbia. — Le Roy, 



O. E. ; Malloch, G. S., 2. 



, Colorado — Moore, C. J. 



, Idaho. — Umplebj^, J. B. 



, Japan. — Kato, T., 2. 



, Lake - Superior region, — 



Machatschek, F., 2. 



, Montana. — Ray, J. C. 



, New South Wales. — Donald- 

 son, R. J. 



, Noya Scotia. — Malcolm, W. 



, Philippine Is. — Fanning, P. 



R. 



, Portugal.— Bello, A. d'O. 



. Russia. — Stickney, A. W. 



, Siberia. — Weigel, 0. 



Ore-deposits, Silesia. — Berg, G. ; Sachs, 

 A., 1 & 2. 



, Utah.— Butler, ]]. S., 2 ; Van 



Horn, F. R., 2. 



Washington.— Bancroft, H. 



, Western Australia. — Feldt- 



mann, F. R. 



, Wyoming. — Hewett, D. F. 



, classification of. — -Crook, T ; 



Hatch, F. H., 1 & 2. 



, depth and. — Kemp, J. P., 2. 



■ — — , electric actiyity in. — Wells, 



R. C. 



, genesis of. — Earle, R. B. ; 



Hatch, F. H., 3; Lawson, A. C, 3; 

 Knopf, A., 2; Mennell, F. P. 



, mineral composition of pri- 

 mary. — Emmons, W. H. 



, origin of contact-metamor- 



phic. — Lindgren, W. 



, origin of primary & secon- 

 dary. — Krusch, P. 



— , formation of oxidized. — For- 



mor, L. L. 



, persistence in depth. — Mac- 



laron, M. 



, superficial diffusion in. — 



Penrose, R. A. ¥.,JiI. 



■, types of. — Kendall, J. D. 



. See also Secondary enrich- 

 ment. 



Ore - deposition by meteoric waters. — 



Lawson, A. C, 4. 

 Oregon (U.S.A.).— Arnold. R.,2; Diller, 



J.S., 2; Margerie, E. de; Shufeldt, 



R. W. 



Orenburg (Russia). — Kracheninnikov, 



H. M., 1 & 2. 

 Orindan Formation, California. — Mer- 



riam, J. C, 4. 

 Oriskany Beds. Maine. — Pirsson, L. V., 



3. 



Sandstone, Ontario. — Kindle, E. 



M., 2. 



Ornamental stones, Quebec. — Parks, W. 

 A. 



Orne (Normandy).— Bigot, A., 5 & 9 ; 



Lignier, 0., 5. 

 Orne R. (France).— Bigot, A., 2. 

 Ornithischia. — Huene, F. yon. 5 & 10. 

 OrnitliocJieirns. — Hooley, R. W. 

 Ornithostoma. — Bogholubov, N. N. 

 Oruithosuelius. — Huene, F. von. 6. 

 Or^A is.-Asselbergs, E. ; Fuchs, A.; 



Liebrecht, F.; Mansuy, H., 1 & 3 ; 



PiEckelraann, W. ; Pruvost, P., 4 ; 



Quiring, H., 2. 

 Orthite. — Zambonini, F. 

 Orthnceras. — Foerste, A. F. ; Liebrecht, 



F. ; Mansuy, H. ; Smith, J. P. 

 Orthncrinus. — Schmidt, W. E. 

 Orfhodesma. — Foerste, A, F. 

 Orthnmylacris. — Pruvost, P., 6. 

 Orthnnema. — Mansuy. H., 2. 

 Orthoiwta. — ^ransuv, H., 3. 

 Ortltophrac/mina . — Checchia - Rispoli, 



G. ; Rutten, L., 2. 



