INDEX 



353 



Sounds of telegraph wires J 157 



Solubility ot carbonate of calcium.. 216 



" indigo 1 207 



" sulphur 201 



Solar atmosphere, chemical analysis 



of 331 



Source of volcanic action 234 



Solar rotation, use of thermometer 



in determining • .327 



Spectra of gases 217 



Spectrum analysis 21C 



" of lightning 331 



*' of the aurora, zodiacal 



light 326 



Spectroscope, Zollner's reversion.. . .323 



Steel rails, their durability 30 



Stoves, cast-iron 67 



Steel-capped rails 32 



Stereoscope, the American 88 



Steam carriages, Fairlie 35 



Stock, li^ht roiling 36 



Straits ot 3Iagellan, recent surveys in 



the... 338 



Stone period, implements of the. ...340 



Stratification of guano 306 



Strengthening and rendering woven 



tissues impermeable to water... 129 

 Stewart and Tait's experiments on 



the heating of bodies 172 



Steel rails, improved traction upon. 28 



Steam generators 132 



" heat on hay 134 



" power on canals 61 



Stratography of the Palaeozoic rocks 



of Vermont 239 



Stream, the Gulf 259 



Strata, water bearing 260 



Steel-headed rails 55 



Stone, cement for 130 



Supersaturation 212 



Surface changes in Maine 249 



Sulphurous acid for dissolving bones.226 

 Substance homologous with Borneo 



camphor 219 



Suez Canal 62 



" passage through the 61 



Sun, distance of the 325 



" observations on the protuber- 

 ances of the 322 



Suspension Bridge over the Missouri 



River 47 



Surveys, recent in the Straits of 



Magellan 338 



System of Moncrieff .112 



Sutro tunnel 57 



Summary of improvements in the 



mechanic arts, etc 128 



Tanned cotton 129 



Tannin in horse-chestnut leaves.... 231 



Teleiconography 68 



Tests for steel fails 32 



Temperatures, researches on materi- 

 als fit for resisting very high.... 81 



Telegraph wires, sounds of. 157 



" wave time of electric. . . . 156 

 Temperature of sea water at great 



depths 188 



Textile fabrics, treating 133 



Tests for sugar 230 



*' phosphorus 230 



Tests for alcohol 230 



" nitrates 229 



" Prussian blue 229 



" hydrocyanic acid 229 



" wool 231 



Terra cotta clay, large deposit of 258 



Temperature of the blood vs. respi- 

 ration 274 



Tempers comet 325 



Telegraph lines and flie Aurora Bo- 



realis 151 



" Ocean 109 



Telegraphs, French military 109 



" French Atlantic 102 



Teroxide of thallium 198 



Telegraph, Indo-European 107 



" enterprise 108 



Thermo-electric pile, new 147 



Thermometer, use of in determin- 

 ing period of solar rotation 327 



Tides , the 188 



Tinning by moist way 224 



Time-table, Pacific Railroad 15 



Tin in the State of Maine 264 



Tomlinson's theory of boiling 212 



Topaz 227 



Torquay water 3Iain, hydraulic 



scraping of 134 



Trade routes between Northern In- 

 dia and Central Asia 337 



Trade, influence of, on cholera 301 



Transfusion of blood 299 



Transmission of gases through col- 

 loid substances 189 



Transparent paper 135 



Trend of the Rocky Mountains 252 



Transits of Venus 328 



Traction, resistance of roads to 54 



Treating textile fabrics 133 



Tusks of tho mammoth 300 



Tubercle, inoculabUity of 300 



Turacine 204 



Tungstate of Barium 225 



Tunnel, new Thames 56 



'♦ proposed under the British 



Channel 58 



" the Sutro 57 



" MontCenis 57 



Tubes, cast-iron 130 



Twiliglit and Photography 144 



Tyndall's theory of comets 328 



" discovery 136 



" on blue color of the sky.... 138 



Uniformity of weights and coins. . . . 70 



Unhcalthfulness of iron stoves 272 



Uranium 225 



Urea, formation of. 2J5 



Uranus, lightof 330 



Utilization of chrome alum 200 



Vapors, action of light upon 143 



Vancouver's Islaud, natives of 303 



Vaccination 275 



Velocity of electric currents 154 



Vegetable electromotors 166 



Velocity of insects' wings during 



flight 307 



Vertebrates, development. . . 304 



Vertebrate remains in Nebraska — 254 

 Venus, transits of .328 



