486 



INDEX. 



Rocks — 

 Corundum-bearing rock from Mon- 

 tana, 421. 

 Leucite rocks in Wyoming, 115. 

 Madupite, 129. 

 Orendite, Wyoming, 123. 

 Wyomingite, 120. 



s 



Scudder, S. H., North American 



Orthoptera, 250. 

 Secondary undulations registered on 



tide gauges, Denison, 82. 

 Smyth, C. H. Jr., pseudomorphs 



from New York, 309. 

 Spark discharges, Warburg, 474. 

 Specific heat, determination by the 



method of mixtures, Wadsworth, 



265. 

 Stars, spectra of certain, Yogel and 



Wilsing, 475. 

 South Africa Geological Society, vol. 



II, 78. 



Temperatures, underground, at great 

 depths, Hallock, 76. 



Tide gauge observations, 82. 



Tin deposits, Temescal, So. Califor- 

 nia, 39. 



Trowbridge, J., electrical discharges 

 in air, 190 ; oscillatory discharge of 

 a large accumulator, 194. 



u 



United States Geological Survey, pub- 

 lications, 155, 392. 



Van Tieghem, new system of classifi- 

 cation of phaenogamia, 79. 



Van't Hoff, Doppelsalzen, etc., 68. 



Vaughan, T. W., outlying areas of 

 the Comanche series, 43. 



w 



Wadsworth, F. L. O., determination 

 of specific heat by the method of 

 mixtures, 265. 



Walker, C. F., titration of sodium 

 thiosulphate with iodic acid, 235. 



Wave-length, effect of pressure on, 

 Humphreys, 392. 



Webster, A. G. , Theory of Electricity 

 and Magnetism, 72. 



Wells, H. L., translation of Frese- 

 nius's Qualitative Analysis, 473. 



Wieland, G. R., Currituck Sound, 

 Virginia and North Carolina, 76 ; 

 depth of peat in the Dismal Swamp, 

 76 ; eopaleozoic hot springs and sil- 

 iceous oolite, 262. 



Wright, L. , Induction Coil in practi- 

 cal work, 324. 



Zoological Bulletin, 83. 



