INDEX 



349 



Sphygmoscope, new 286 



Spontaneous generation 266 



Statistics of soda manufacture 170 



Steam hammer, an eight-toil 118 



" boilers 112 



Steering gear 110 



Stone implements of Western Africa 333 



Stones, preservation of 68,69 



St. Louis bridge, effects of com- 

 pressed air on men employed on.. 281 



Stoking, mechanical 23 



Street-paving Ill 



Storms announced by telegraph 316 



Strontium, preparation of. 199 



Strychnia , 173 



" reagent for 205 



Submergence of American conti- 

 nent 254 



Sublimation of sesquichloride of 



gold 201 



Suez canal 73 



Sugar refineries, diffusion in 102 



'* refining process 101 



Sulphate of lead, solubility of 165 



Sulphur, action of light on 165 



" in coal gas, estimation of. .173 

 Sulphuretted hydrogen,formatiou of.203 



Sun, photographing the 308 



Supersatumtion 133 



Surface geology of basin of Great 



Lakes 237 



Survey of Isthmus of Darien 74 



Suspension bridge at Pittsburg, Pa. 46 



Synthesis of indigo 211 



" hydroxylamine 209 



Tertiary deposits of Australia 224 



Telegraph, storms announced by 316 



Guattari atmospheric... 84 



Telegraphy, ocean 87 



Tellier ice-machine 99 



Thames, new tunnel under 50 



Thallium, preservation of. 200 



Thermometers, deep sea 137 



Thickness of glaciers 219 



Tissues, air in 271 



Traction engine, elastic tires for. ... 38 



Tramway, single rail 115 



Tramway, wire rope 40 



Transformation of cast iron 54 



Transportation of fresh meats and 

 fruits 125 



Transformation of fatty acids into 



alcohols 210 



Transit instrument, the new Cam- 

 bridge 314 



Trinkerite 203 



Tunnel, Hoosac, central shaft , 76 



Mont Cenis 117 



Under the Thames 50 



Twist drills, recent improvements in 60 

 Tyudall, Prof. 267 



Underground lines, asphalte tubes 



for 88 



railway, Broadway 48 

 United States, physical geography of 341 



Utilization of sewage 187 



" waste nitrous fumes.. 206 

 Utilizing waste threads Ill 



Valley of the Rio Grande 243 



" Amazon 243 



Velocity of sound 134 



Ventilation of coal mines 115 



" " Royal Albert hall of 



arts and sciences... C2 



Volcano fish 300 



Volumetric estimation of copper. . . .204 

 Vowel sounds, fixed notes character- 

 istic of. 135 



Walls, coating for outside 68 



Watering streets by chemicals 109 



Water pipes, preservation of cast 



iron 67 



Wealden, age of 250 



Weldon's chlorine proof 166 



White Mountains, geology of. 230 



glaciers of 231 



Windward great-circle sailing 82 



Window, new 122 



Winnecke's comet, light of 315 



Wire rope tramway at Brighton, 



Eng 40 



Wood, photography on 102 



Young, Prof., report on eclipse xvi 



Zinc and calcium, alloy of. 199 



" as a building material 108 



Zolluer, Prof. xil 



