181 



[1920-1922] 



Silica, United States. — 0, United 



States, 5, 6, 8. 



, refractories. — 0, Scott, A. 



, spherulitic. — 1, Randoin, — . 



. See also Flint, Quartz, &c. 



Silica-brick. — 0, Thomas, Herbert, 



H., 2 ; United States, 8 ; 1, Holm- 



quist, P. J., 2 ; 2, Scott, A., 1, 2. 

 -rock, Great Britain. — 0, Lamp- 



lugh, G. W., 35 ; Thomas, Herbert 



H, 2. 



saturation, igneous rocks. — 0, 



Thomson, J. A., 4. 

 Silicate-melts. — 1, Bowen, N. L. ; 



2, Bceke, H. E. 



rocks.— 0, Hillebrand, W. F. 



, metasomatism in. — 1, 



Goldschmidt, V. M. ; 2, Gold - 



schmidt, V. M., 12, 13. 

 . See also Calc-silicate- 



rocks & Lime-silicate-rocks. 

 Silicates, alumina. — 1, Gans, R. ; 



Schneiderhcehn, H. ; 2, Granger, 



P., 2. 



, analyses. — 1, Jakob, J. ; 2, 



Gossner, B. ; Tschermak, G., 2. 



, barium. — 2, Eskola, P. 



, iron. — 0, Hackl, O., 7 ; 2, 



Kretschmer, F., 4. 



, nickel. — 2, Dittler, E., 5. 



, soils &. — 1, Gans. R., 2. 



, Sonstadt's solution &. — 2, 



Walker, T. L. 



, strontium. — 2, Eskola, P. 



, synthetic. — 1, Kcenigsberger, 



2. 



. See also Hydrosilicates, Sul- 

 phide-silicate-melts, &c. 

 Silicincation, talc-schists. — 0, Wal- 



ther, K. 

 Silicified wood. See Wood. 

 Sihcispongiae. — 0 & 1, Stefani, C. de ; 



2, Stefani, C. de, 2. 

 Sillimanite. — 0, Shannon, E. V., 12 ; 



Spencer, L. J., 2 ; 2, Anten, J. ; 



Lacroix, A., 3 ; Shannon, E. V., 5. 



See also Fibrolite. 



schists. See Schists. 



Sills, Devon. — 1, Shannon, W. G. St. 



J. ; 2, Shannon, W. G. St. J., 2. 



, Edinburgh. — 0, Allan, R. 



, Montana. — 2, Kemp, J. F., 7. 



Silphidae. — 2, Jeannel, R. 

 Silt— 2, Chatley, H., 2. 



, Euphrates R. — 0, Stevens, H. 



, Fenland. — 0, Hardy, F. 



, Valais. — 1, Boissier, R. 



, in reservoir lakes. — 1, Anon., 



26. 



Silurian. — 1, Jones, O. T. 



, Algeria. — 2, Ehrmann, F., 2. 



, Anglesey. — 0, Greenly, E. 



, Belgium. — 0, Fourmarier, P., 



12 ; 1, Fourmarier, P., 10 ; 



Stainier, X., 6 ; 2, Salee,A. ; 

 , Bohemia. — 0, Nowak, E. ; 



Woldfich, J., 2 ; 2, Kodym, O. 



Perner, J., 2, 3 ; Petrascheck, W., 



3- 



Silurian, Bristol area — 1, Reynolds, S. 

 H. 



, British Columbia. — 2, Shepard, 



F. P. 



, Cardiff area. — 0, Cox, A. H., 1, 



2. 



, Denbighshire. — 0, Wills, L. J., 



1, 2 ; 1, Wills, L. J., 2 ; 2, Wills, 

 L. J. 



, Europe. — 0, Grabau, A. W., 9. 



, France (N.W.). — 0, Stouvenot, 



A. ; 1, Couffon, O. ; Milon, Y. ; 



2, Kerforne, F. J., 3. 



, French Indo-China. — 0, Man- 



suy, H., 8 ; 2, Mansuy, H., 12. 

 , Germany. — 0, Steuer, A., 4, 6 ; 



1, Ahlburg, J., 4 ; Denckmann, A., 

 4- 



, Gloucestershire. — 1, Gardiner, 



C. I., 1, 2. 



, Gotland.— 1 & 2, Hede, J. E. 



, Greenland. — 1 & 2, Koch, L. 



, Merioneth. — 2, Wills, L. J. 



, N.-W. Territories. — 1, Hume, 



G. S. ; Kindle, E. M., 4. 



, Norway. — 2, Kiasr, J., 6, 7. 



, Pembrokeshire. — 1, Dixon, E. 



E. L. 



, Quebec. — 2, Twenhofel, W. H. 



, Queensland. — 0, Dunstan, B. 



, Shropshire. — 1, Stamp, L. D. 



, Spain. — 1, Perez-Cossio, L. ; 



2, Sampelayo, P. H. 



, Styria. — 1, Heritsch, F., 3. 



, United States. — 0, Butts, C. ; 



Fcerste, A. F., 7 ; Grabau, A. W., 

 9 ; Hills, T. M. ; Shaw, E. W., 5 5 

 2, Jillson, W. R., 7 ; St. Clair, S., 2. 



, Victoria. — 1, Junner, N. R. ; 



2, Chapman, F., 7. 



, Wales (N.).— 2, Elles, G. L., 3. 



, Westmorland. — 1, Butterfield, 



J. A. 



, Worcestershire. — 1, King, W. 



W. 



. See also Cambro-Silurian, 



Downtonian, &c. 



Silurian- Devonian boundary. — 0, 

 Stamp, L. D. ; 1, Stamp, L. D., 3 ; 

 2, Leriche, M., 6 ; Stamp, L. D., 4. 



Siluridae. — 0, Priem, F. ; 2, Peyer, B. 



Siluro-Cambrian, Belgium. — 1, Four- 

 marier, P. See also Cambro- 

 Silurian. 



Silver. — 0, Emmons, W. H. ; 1, 

 Schlossmacher, K., 2 ; 2, Beutell, 

 A., 4 ; Braly, A. ; Hills, R. C, 2 ; 

 Schultze, E., 4. 



, Alaska. — 0, Bateman, A. M., 2; 



United States, 4, 5, 8 ; 1, Chapin, 

 T., 2 ; United States, 5, 8 ; 2, 

 United States, 10. 



, Alps (E.). — 2, Canaval, JR. 



, Bolivia. — 0, Davy, W. M. ; 1, 



Singewald, J. T., fil. 



, British Columbia. — 0, Ban- 

 croft, M. F. ; Camsell, C., 2 ; 

 1, Cairnes, C. E. ; Schofield, S. J., 

 2 ; 2, Dolmage, V. ; Hanson, G. 



