[1915-19-] 



474 



Olry, A., Obit. — See Gosselet, J., 

 2 ; & Zeiller, C. R., 1. 



Olten (Switzerland). — Stingelin, T. 



Oltenia (Roumania). — Ionescu-Arge- 

 toaia, I. P. 



Oltinotherium. — Repelin, J., 10. 



Omalaxis. — Marshall, P., 8 . 



Omeo (Victoria). — Dunn, E. J., 14. 



Omineca mining dist. (B.C.). — Gallo- 

 way, J. D., 2. 



Omomys. — Gregory, W. K., 5; 

 Matthew, W. D., 14. 



Omphalocyclus. — Douville, H., 22. 



Omphalotrochus. — Chapman, F., 6. 



Onaping dist. (Ontario). — Collins, 

 W. H., 6. 



Oncograptus. — Hall, T. S., 1 ; Harris, 

 W. J. 



Oncomelania.- — Annandale, N., 1. 

 Oncouscecia. — Canu, F., 9. 

 Onega, Lake (Russia). — Eskola, P., 

 3. 



Onekakara (N.Z.).— Marshall, P., 10. 



Onet (Sweden). — Froedin, G., 7. 



Oniscia. — Martin, K. 



Ontario, Prov. (Canada). — Coleman, 

 A. P., 1 & 8; Collins, W. H., 1-7: 

 Cooke, H. C, 5 & 6 ; Foerste, A. F. 

 1 ; Foye, W. G., 1-3; Hume, G. S. 

 Johnston, W. A., 1-4 & 6-8 

 Kindle, E. M., 7 & 15; Miller 

 W. G., 3-6; Quirke, T. T., 1 

 Stansfield, J., 1-3; Stauffer, C. R. 



1 & 2; Tanton, T. L., 3, 4 & 6 

 Uglow, W. L., 2; Williams, M. Y., 

 2-12; Wilson, M. E., 8 & 9. 



, clays. — Keele, J., 4 & 5. 



, minerals & ore deposits. — • 



Bateman, A. M., 1 ; Burrows, A. G., 

 1-5 ; Goodchild, W. H., 6; Graham, 

 R. P. D., 3; Hopkins, P. E., 1-6; 

 Johnson, H. H. ; Knight, C. W., 

 1-3 ; MacDonald, J. A. ; Newnam, 

 W. E. ; Parsons, A. L., 1-5; Reid, 

 J. A.; Tyrrell, J. B., 2; see also 

 Ontario, 1-5. 



, oil & gas fields. — Malcolm, W., 



1 ; Mickle, G. R. 



■ — — , radioactive minerals. — Brunton, 

 S. 



, road materials. — Clark, K. A. ; 



Reinecke, L., 3, 4 & 6-8. 

 , sand & gravel deposits. — 



Ledoux, A., 9. 

 , Lake.— Kindle, E. M., 1 & 2; 



Mather, K. F., 2; Spencer, J. W., 



2 & 3. 



Onychocella. — Faura, M. 

 Onychocrinus. — Wright, J., fil., 2. 

 Ooceras. — Parks, W. A., 2. 

 Oolite, Belgium. — Dorlodot, L. de. 



, Gotland.— Munthe, H., 3. 



, Normandy. — Nicolesco, C, 1 & 



2. 



, Oxfordshire.— Waif ord, E. A., 4. 



, Spain. — Sampelayo, H. 



grains, in tipper Lias, Lincoln- 

 shire. — Preston, H. 



Oolite, peculiar form of, Pennyl- 



vania. — Wherry, E. T., 7. 



. See also Jurassic, &c. 



Oolites, formation of. — Bucher. 



W. H., 2; Cayeux, L., 1; Van 



Tuyl, F. M., 5. 

 , organic, in Ordovician. — Van 



Tuyl, F. M., 7. 



-, Pliocene.— Wieland, G. R., 2. 



, in shale. — Tarr, W. A., 5. 



Oolitic texture, origin of.— Brown, 



T. C, 1. 

 Ooliticia. — Cossmann, M., 5. 

 Oostrombus. — Savornin, J., 1. 

 Opabinia. — Walcott, C. D., 11. 

 Opal, Madagascar. — Lacroix, A., 5. 

 , New South Wales.— Newton. 



R. B., 2. 



, S. Australia. — See South 



Australia, 8. 



Opaque minerals, microscopical de- 

 termination of. — Murdoch, J. 



Operculina. — Chapman, F., 1 ; 

 Douville, H., 20 & 22 ; Yabe, H., 

 6. 



Ophiacodon. — Broom, R., 3. 

 Ophioderma & Ophioglypha. — Clark, 



W. B., 3. 

 Ophioglossum. — Antevs, E., 2. 

 Ophiolepis. — Embrey, G., 1 ; Hor- 



wood, A. R., 1 ; Lanquine, A. 

 Ophiolithic rocks, Liguria. — Preller, 



C. S. du R., 10 & 11. 

 Ophiopsis. — Woodward, A. S., 27. 

 Ophites, Pyrenees. — Lacroix, A., 31 & 



51. 



Ophiuridse, Rhfetic. — Lanquine, A. 

 Ophryastites. — Cockerell, T. D. A., 19. 

 Ophthalmosaurus. — Andrews, C. W., 

 1. 



Opis. — Cossmann, M., 5 ; Spitz, A., 1 ; 



Waring, C. A. 

 Opisaster. — Fourtau, R., 6. 

 Oppelia. — Douville, R. 

 Oppenheimer, L., Obit. — See Anon., 



68. 



Optic axes, limit of error in. — 



Panebianco, H. 

 , in monoclinic felspars. — 



Kozu, S., 6. 

 Orcanthus. — Eastman, C. R., 2. 

 Oran (Algeria).— Dalloni, M., 5, 8 & 



11; Joleaud, L., 8; Rey, F. 

 Orange Free State. — Shand, S. J., 3 



& 5. 



Orangedale (Nova Scotia). — Hayes, 

 A. O., 3. 



Orbicella.— Vaughan, T. W., 12; 

 Yabe, H., 7. 



Orbicular granite, Co. Donegal. — 

 Cole, G. A. J., 7. 



Orbiculina. — Cushman, J. A., 1. 



Orbiculoidea. — Bolton, H., 1 ; Bran- 

 son, E. B., 3 & 5; Hede, J. E., 2 

 Mansuy, H., 1 ; Reed, F. R. C, 4 

 Weller, S., 1 ; Williams, H. S., 2 

 Williams, M. Y., 4. 



Orbitoidea. — Douville, H., 7, 8 & 16 



