INDEX. 
467 
PAGS 
Siliceous Minerals, Formation of ... 204 I 
,, Stalactites 92 
Silkworms’ Eggs, Good and Bad ... 343 
Silurian System of Bohemia 97 ! 
Silver Bath, to Keep it in Good ‘ 
Order 334 I 
Silvering of Mirrors 338 
Sirius, Motion of, in Space 308 I 
,, the Parallax of 84 I 
Skeleton of the Primates 122 
Skin, Pathology of the 212 1 
Slide Valves 99 
Smoke, Prevention of 107 I 
Snail’s Tongues, Preparation of for 
the Microscope 120 
Snake-bites as a Preventive of Hy- 
drophobia 440 
Snow-flake, The Science of a 46 
Soap-bubbles in Carbonic Acid 230 
Soap, Carbolic 326 
Sodic Carbonate, Manufacture of... 200 
Soils, Absorptive Action of 91 
Solar Eclipse, Great Total 417, 448 
Solidification, Contraction of Bodies 
during 337 
Soluble Mineral for Preserving Stone 107 
„ Silicates, Experiments on 
Animals with 211 
Solubility of Iodine in Organic Sub- 
stances 90 
Sonorous Waves, The Interference 
of, Kendered Visible 232 
Sorbonne, New Laboratory at the ... 91 
South African Mineralogy 107 
„ Sir James, The Late 85 
Specific Weight, Kelation of Mag- 
netism to 339 
Spectroscope, Metallurgical 228 
,, in Toxicology 115 
Spectrum Analysis of Comet II. 
(1868) 417 
„ of Potassium 453 
Spiral Vessels, Development of Cel- 
lular Tissue in 198 
Sponge, Fresh Water 1, 134 
Spongy Platinum, Cause of the Ig- 
niting Power of 450 
Sprengel Air-Pump 230 
Spring Buffers for Ships’ Cables ... 324 
Stalactites, Siliceous 92 
Starch in the Yolk of an Egg 341 
Star Finding 300 
Starfish, Circulatory Apparatus of 236 
Stars, First Magnitude 82 
„ of Seventh Magnitude, Spec- 
tra of 310 
“ Staiinch,” Gun-boat 323 
Steam Boilers, Gas for 324 
,, „ Liquid Fuel for 323 
„ Generation of 107 
Steel Bails 209 
„ Eopes 210 
PAGE 
Steel Solder for 106 
„ Spectrum, The Bessemer 114 
„ Strength of 99, 100 
Stereoscope, New 336 
Stereoscopic Binoculars 109 
Stirling’s Essays on “ Jerrold, Ten- 
nyson, and Macaulay” 187 
Stone Age, The 180, 321 
Stone, Soluble Mineral for Preserv- 
ing 107 
Storm-Glass, Meteorological Value 
of the 117 
Street-Lamps, Lighting by Electri- 
city 328 
Stresses in Braced Structures 322 
Strychnia Poisoning, Use of To- 
bacco in 328 
Structure of Tubipora 342 
Substances, Befraction-equivalents 
of 337 
Sulphate of Ammonia, Impure 427 
Sulphocyanide of Ammonium in 
Gas-mains 94 
Sulphur in the Smelting Dis- 
tricts 219 
Sulphruous Acid, Action of, on 
Silver Compounds 428 
Summer, Heat of the Past 445 
Sun, An Eclipse of the 81 
Sun-spot Visible to the Naked Eye 420 
Sun -views of the Earth 76 
Supporting Powers of Piles 209 
Suspected Changes on the Moon’s 
Surface 83 
Symons, G. J., on Bain 72 
Synoptic Weather Charts 445 
Synthesis of Neurine 324 
Syrup of Iodide of Iron, Preserva- 
tion of. 214 
Tactile Corpuscles 326 
Tadpoles, “Live-box,” for 108 
Tannic Acids, Chemistry of the ... 91 
Tannin, Conversion of Gallic Acid 
into 203 
Telescopes, Large 194 
Temperature of the Body in Convul- 
sions 215 
Tendons, Development of 211 
Terminology, A New 96 
Test Plate, Nobert’s 447 
Thallium, Preparation of 442 
Therapeutical Effects of Hydro- 
cyanic Acid 105 
Thermometer for the Window 117 
“ Thoughts of a Physician ” 303 
Timbs’ “ Year-book of Facts ” 189 
Time Occupied by Denudation in 
Scotland 204 
Tinting Microscopic Structures 106 
Tissues of Plants, Analysis of 
' the 196 
) Titanoferrite in Stafford 331 
