INDEX. 



35G- 



u 

 



Targets of wool, effects of shot on . 101 

 Telegraph, a meteorological indica- 

 tor 121 



" Atlantic 138 



Telegraphic construction, progress 



or 137 



Telegraphing by electro-magnetism, 1.'55 



Tellurium, ne\v source of 21<> 



" rcnueseee," iron-clad, action with, 88 

 Thallum, distribution of . . . . 210,217 



Thermograph, new 152 



TiJes, popular explanation of ... 1 is 



Tin, ancient sources of 344 



" " scrap," utilization of 71 



Tobacco and alcohol, effects of on 



health 234 



best method of smoking . 230 

 influence of in producing 



disease 232 



" physiological effects of . . 229 

 11 products of the combustion 



of 229 



Topography, application of photog- 

 raphy to 211 



Torpedo warfare 95 



Transparency 179 



Trout, color of 172 



Tunnel, Mt. Cenis 10 



Twilight, duration of 209 



United States, highest mountains in, 300 



Vapors, condensation on the surface 



of solids 103 



Vegetation, curious conditions of . 313 

 Ventilation and warmth 227 



Vibrations, heat, nature of .... 104 

 Vision, motions of the eye In . . . IM 



" Home peculiarities of . . . . 'M't 

 Vital force and contractility .... :;jo 

 Volcanoes and hot springs ..... w,<j 



Warfare by torpedoes 



novelties in 



Waste products, utilization of ... 



Water and lead pipes 



" boiled in paper vessels . . . 

 " boiling, researches on . . . . 



" consumption of 



" How ot through irregular 



tubes 



" temperature of under pres- 

 sure 



Weather indicated by the state of 



the telegraph 



Weights and measures, uniformity 



in 



Welding by hydraulic pressure . . 

 Wells, Artesian, of the Sahara . . . 

 Wood, action of sulphate of copper 



on 



" conversion into coal under 



9.1 



M 



70 



215 



pressure 

 new ornamental 

 " preservation of 

 Wool, compressed, for targets 

 Work and waste, bodily 

 Writing, recovery of defaced . 



07 

 275 

 131 



4 

 44 



305 



51 



309 



75 



51 



101 



200 



245 



Zinc coinage ............ 77 



" native ............ 309 



" waste of in galvanizing ... 70 



