354 



INDEX 



Veins containing organic remains.. 250 



Vermont, palaeozoic rocks of ~']9 



Venezuela, geology of. 'JG6 



Very durable cement for iron and 



stone 133 



Velocity of cannon balls 112 



Vitality of the sponge 30C 



Vibrations, electricity applied to 



registering 102 



Visual impressions — identity of in 



the animal kingdom 299 



Volcanic action, source of 234 



"Water-bearing strata near Norwich 



England 200 



"Wave time of the electric telegraph. 150 

 SVater, maximum point of the den- 

 sity of 188 



Water-proofing walls 123 



Well, the frozen 235 



Weights and coins, uniformity of... 70 

 Welding compound 22-1 



Welding copper .224 



Wheels, cur 27 



*' sliding of car 28 



" wooden 28 



" " 35 



White phosphorus 227 



Wines, preservation of. 203 



Wooden wheels 28 



Wood, conservation of . . 129 



'* drying of 129 



" gas from 97 



Woven tissues, strengthening and 

 rendering impermeable to water of 129 



Wool, test for 231 



Writing, ineradicable 135 



Zinc, painting 133 



Zinc, extraction of, from ores 225 



Zirconia light HI 



Zinc, painting l-"»3- 



Zollncr'6 reversion spectroscope. . . .323 



