INDEX. 
38 ? 
PAGE 
Solar Parallax from Meridian Ob- 
servations on Mars 80 
Sparodus 89 
Spectra of Gases, Harmonic Ratios 
in the 94 
Spectroscopes, Optical Power of. . . 92 
Sponges, Systematic Position of 
the 289 
Spring 264 
Starfish, Synthetic 192, 380 
Star Systems 168 
Steel, Hardening and Tempering of 248 
,, Magnets, action of Hollow, 
as compared with Solid 379 
Stone Age, remains of, near Tyre 357 
Sunspots and British Weather ... 236 
Supernatural in Nature, the 344 
Surveys, Connection of 191 
Synthetic Starfish 192, 380 
Systematic position of the Sponges 289 
Tabulate Corals 63 
Tannic Acid of Oak-bark 366 
Telegraphic Purposes, Dynamo- 
electric Machines for 186 
Telescopes, Resolving Power of ... 374 
Terrestrial Magnetism, Influence 
of, on the Atmosphere 186 
Tertiary Deposits, Classification 
of the 122 
Thermo-electric behaviour of Aque- 
ous Solutions with Mercurial 
Electrodes 184 
Thomson’s Galvanometers, Mea- 
surements by 184 
Threshold of Evolution, the 143 
Thulium 83 
Tin Chloride and Potassium Chlo- 
rate, remarkable behaviour of 366 
Titanomorphite 183 
Topophone, or Sound-place 186 
Toughened Glass 288 
PAGE 
Transit of Venus, Dec. 6, 1882 ... 267 
Tuning-forks, influence of Heat on 288 
Tyndall’s 4 Heat, a Mode of Mo- 
tion ’ 340 
Ultra-Nfptunian Planets ... 267, 363 
United States Geological Survey 
of the Territories, Report of the 346 
Units and Physical Constants ... 75 
Uranus 363 
Urquhart’s 4 Electric Light, its 
Products and Use ’ 258 
Vacuum Tube of Variable Re- 
sistance 373 
Vapour Density of the Halogens 275 
Variations from Mariotte’s Law... 288 
Velocity of Light, experimental 
determination of the 94 
Venus, Transit of, Dec. 6, 1882 ... 267 
Vesbium 173 
Voltaire’s Opinions regarding Geo- 
logy 310 
Wallich, Surgeon-Major, on the 
Threshold of Evolution 143 
Water, Electromotive Force in 
free jets of 283 
Wave-lengths of Heat-rays, mea- 
surement of 93 
Whitaker’s 4 Geological Record for 
1877’ 261 
,, 4 Geology of London 
and the Neighbourhood ’ 265 
Wilson’s 4 Introduction to the 
Study of Flowers ’ 341 
Winnecke’s Comet 270 
Zinc-Cakbon Battery 288 
Zoological Classification 257 
Zoology 95, 192, 289, 380 
„ New Zealand 261 
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