408 



ANNUAL OF SCIENTIFIC DISCOVERY. 



Superior, lake, report on the geology 

 of the land district of, 



258 



Sweden, elevation of the coast of, 243 



SWIFT, CAPT. W. H., 



Switch, self-adjusting railroad, 29 



Syphon-filter, 64 



TALCOTT, CAPT. ANDREW, 143 



Telegraphic communication twenty 



years ago, thoughts on, 102 



Telegraph, electric, insulator for, 109 



" submarine, between Eng- 

 land and France, 104 

 " system of fire-alarms, 106 

 Telescopes, construction of mirrors for 



reflecting, 141 



improvements in, 143 



" new reflecting, 144 



" zenith, 143 



Tennessee, comparison of the strata of 

 the silurian basin with those of New 

 York, of the same age, 256 



TESCHMACHER, MR. I. T., 299, 308 



Thoughts on telegraphic communica- 

 tion twenty years ago, 102 

 Tide, flood, law of deposit of, 262 

 Toad, common, poison of, 

 Tobacco and its results, 326 

 Topaz, artificial, 290 

 Tracks and trails, existence of in the 



lower silurian, 314 



Tungsten, phosphuret of, 219 



TUOMEY, PROF. M., 281 



Type-composing and distributing ma- 

 chine, 



Uranus, new satellites of, 373 



Utah, mud volcanoes of, 285 



" salt lake of, 283 



Valve, Nasmyth's absolute safety, 25 



Vegetable physiology, 326 



Vegetables, history and nomenclature 



of some cultivated, 323 



Vegetables and plants, freezing of, 

 Vegetation, effects of on climate, 330 



Vesuvius, present condition of, 287 



Victoria Regia, 337 



VIRDIN, MR., 21 



Vitality of seeds, 325 



Volcanoes, mud in Utah, 385 



WARREN, DR. J. C., 319,320 



Washington, Mt., height of, 279 



Watches at the Great Exhibition, 15 



Water, air-bubbles formed in, 154 



" conduction of electricity 



through, 104 



" effects of pressure upon the 



freezing of, 150 



" improved apparatus for boring 



for, 61 



" origin of the sound formed in, 



agitated, 155 



" metre, Ericsson's, 61 



" metre, new, 60 



" well, alteration which it under- 

 goes, 216 

 Wave principle of marine architect- 

 ure, 30 

 WELLS, D. A., 175, 224, 246 

 Whale, habits and localities of, 349 

 Wheat, productivenes of, 325 

 Wheel, fan-paddle, 31 



" turbine, facts in relation to, 80 

 WHITTLESEY, MR. CHARLES, 360 



WHIPPLE, MR. J. A., 135 



Winds, geological agency of, 263 



WRIGHT, JOSEPH, 79 



WYMAN, DR. J., 351, 361, 369 



YANDELL, DR., 311 



Zeuxis, on the story of the painting by, 350 

 Zinc compound, not injurious to 



health, 

 effect upon iron, 

 " to coat iron with, 

 Zoophytes, actinoid, forms of, 



" structure and growth of, 

 Zodiacal light, 



180 

 177 

 179 

 342 

 340 

 380 



THE END. 





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