876 



INDEX 



Quaternary deposits 259 



Quincy railroad bridge 45 



Quinoidiae, auimal 323 



Kaces, human, t5pes of 322 



" native, of Abyssinia . . . 321 

 " nomad of Russia .... 318 



Radiation vs. surface 183 



Rail of Bessemer steel 37 



Railroad, Pacific 38 



Railway, elevated 37 



" MontCenis 38 



" underground 39 



Railways, street 36 



Rattlesnake poison 306 



Refraction, double, theory of . . 133 



" index of .' 134 



Refuse, animal, treatment of , . 72 



" leather, use of 73 



Regelation, temperature of . . . 183 

 Reptile, marine, new fossil . . . 317 



Respiration vs. food 283 



Retarded ebullition 130 



Rhaedine 230 



Road locomotives 62 



Road-making 35 



Rock sculptures 364 



Roof, large 58 



Rose, attar of 209 



Rubber, bromo-iodized 101 



Rubidium 226 



Russia, nomad races of 318 



Russian America, geology of . . . 254 



Safes, fire proof 103 



Sandstones, chemical analysis of . 192 



Santonine 328 



Santorin, volcano of 267 



Schools, technical , . VI 



Scotland, stone circles of ... . 363 



Sculptures, rock 364 



Sea, discoloration of 315 



Seas, intercontinental 351 



Seaweed as food, 330 



" charcoal 208 



Seine, syphon under 50 



Sewage contamination vs. cholera 300 



. " utilization of 78 



Sexes of bees, production of . . . 334 



" of spiders 334 



Shadows, from transparent bodies 181 

 Showers, meteoric, in 1868, . . . 346 



Siamese twins 307 



Silicates, melting point of ... . 153 



Silver, chloride of 229 



Silvering mirrors 90 



Siredon, a larval form 314 



Skates, sterility among 333 



Sky, color of 348 



Snow, warmth of 349 



Solar engine, Ericsson's .... 64 

 Solar system, origin of .... xiii 

 Sound, transmission of 178 



*' velocity of, in tubes . . . 178 



" vibrations of, made visible . 180 

 Sounds, instrument for analyzing . 180 

 South America, late earthquake in 267 



Southport pier 43 



Species among diatoms 324 



Specific gravity vs. magnetism . . 163 



" " vs. weight .... 124 



Spectacle glasses, mica ..... 92 



Spectra of the nebula; . . . 343, 344 

 " " solar spots .... 343 

 " " st.ars .... 343,344 

 Spectroscope and the Bessemer 



process 14 



Spectrum analysis, facta in . . . 343 

 " of aurora borealis . . . 345 

 " ofcomet II., 1868 . . .342 



** reconstructed ISl 



Spiders, sexes of .334 



Splanchnoscope 297 



Sponge, for textile fabrics .... lul 



Stars, colors of 350 



" spectra of 343, 344 



" water on 345 



Steam, electricity ef 184 



Steam engine, Bailey's 71 



Steel billiard balls 100 



" casting of, under high pres- 

 sure 28 



" hardening of 30 



" manufacture of 16, 17, 21, 23, 30, 



106, 122 

 " mechanical properties of . . 13 



Sterility among skates 333 



St. Louis bridge 42 



Stone age in Japan 362 



" " " Switzerland .... 361 



" artificial 55 



" circles of Scotland .... 363 



*' preservation of 58 



Stonehenge 363 



Storer's process for making steel . 17 

 Storms, Atlantic, reaching the Med- 

 iterranean 347 



Street railways 36 



Street watering .... 86, 217, 328 



Strikes V 



Submarine drill 121 



Suez Canal 38, 39 



Sugar, bleaching of 104 



" making in Mauritius ... 84 



Sulphur, extraction of 218 



Sulphurized paper 95 



Sun, chemical rays of 132 



" total eclipse of 336 



" spots, color of 339 



" " segmentation of . . . 349 



" " spectra of 343 



Sun's heat, annual amount of . . 182 



" ray's, power of 182 



Surface vs. radiation 183 



Suspension bridge, at Nashville . 44 

 Swedish Arctic expedition . . ..366 

 Switzerland, stone a^e in ... . 361 

 Syphon under the Seine .... 60 



Technical Schools vi 



Tees tunnel 49 



Teeth of mammalia, homologies of 314 

 Telegraph cables, hempen ... 52 



'* insulation 166 



" musical 180 



" wire, American com- 

 pound 53 



*' double current . . . Vill 



Telegraphic feats 175 



Telegraphy, facts in 184 



Temperature of earth's crust . . 235 

 Tenacity of wire, efiect of galvanic 



current on 162 



Tertiary deposits of Victoria . . 249 



