1872.] 
SCHELLEN, H., ‘‘ Spectrum Analysis ”’ 
(review), 247 
“Science Primers”’ (review), 377 
Scotch iron manufacture, 520 
Sea water, analysis of, 116 
Sectional paper for drawings, 123 
Sewage of Paris, 392 
— works, 107 
Shafts, sinking, 387, 394 
Ship, aérial, 457 
Silica, new mineralogical species, 389 
Silk, printing on, 542 
Silver, metallurgy of, 260 
Silvered glass specula, 117 
Simonyte, mineral, 261 
Singing-flames, 518 
Slag, removing from _ blast-furnace, 
820 
SmirH, R. AnGus, ‘Air and Rain” 
(review), 498 
Sodium, reduction of potassium by, 
II5 
** Solar Eclipse of Dec. 22, 1870, Ob- 
servations of’’ (review), 370 
Sound produced by heat, 4o1 
‘* Species, Origin of, by Natural Se- 
lection,” by C. DARwIN (review), 
374 . 
Speech, music of, 281 
‘Spectrum Analysis,” by H. SCHEL- 
LEN (review), 247 
Spectroscope, its imperfections and 
their remedy, 47 
Specula, silvered glass, 117 
SPENCER’S puddling furnace, 259 
‘* Spiritualism, report on, by the Com- 
mittee of the London Dialectical 
Society ” (review), 73 
Spontaneous generation, 135 
— combustion of a wooden beam, 
531 
Spring, thermal saline, in Cornwall, 
518 
““ Star Atlas,” by R. A. Procror (re- 
view), 378 
Stars, distance of fixed, 118 
Steam boilers, evaporative efficiency 
of, 401 
— jet, for exhaustion, 395 
— ventilator, 258 
Stellar motions, determination of, by 
spectroscope, 397 
STEwarT, B., ‘ Physics” (review), 
S77 
Stibnite, analysis of, 115 
STIRLING, J. H., ‘‘ As regards Proto- 
plasm ”’ (review), 502 
Stirlingite, 521 
SToneEy, F. S., ‘‘Constru@ion and 
Manufacture of Rifled Ordnance” 
(review) 363 
INDEX. 
oo5 
Sugar, milk, in vegetable juice, 116 
— action of water and heat upon, 530 
Sulphide of carbon, removal of from 
coal gas, 395 
Sulphur, action of on paraffin, 115 
— as a lubricating agent, 409 
Sulphuric acid from coal-gas, 124 
Sun, inductive aGtion of a cause of 
terrestrial magnetism, 276 
Sun’s temperature, 271 
Sun’s rotation, measuring velocity of, 
527 
Sutherlandshire coal, 517 
SuTTon, F., ‘* Volumetric Analysis ”’ 
(review), 92 
Symonps, J. A., 
(review), 81 
* Miscellanies ”’ 
ATE, R., ‘‘ Rudimentary Treatise 
on Geology”’ (review), 85 
Tin ore in New South Wales, 259 
Technology, progress in, 108, 277, 408 
Telegraph printing, 127 
Telegraphing with skyrockets, 169 
Telegraphy, early foreshadows of, 405 
— military, 407 
Temperature, influence of, and posi- 
tion of spectrum lines, 269 
— — of soils, 271 
— — sun’s, 271 
‘Thames, valley of, Geology of the,” 
by J. PHILLIPs (review), 368 
Thermo-electric battery with liquids, 
130 
TuHompson, G.. ‘‘ Discovery of a New 
World of Being” (review), 381 
Tuupicuum, J. L. W., ‘ Chemical 
Physiology ”’ (review), 380 
TopLey, W., geology of Straits of 
Dover, 208 
Torpedoes, 104, 392 
TREVITHICK, F., ‘‘ Life of Richard 
Trevithick ” (review), 507 
Tridymite, mineral, 262 
Trogerite, mineral, 262 
Times, J., ‘‘ Year-Book of Fas in 
Science and Art” (review), 384 
Tubes connected by gas-light joint, 540 
Tunnel, Clifton, 393 
— Mont Cenis, 106 
Turn-table, self centering, 399 
‘* Turning, patterns for,” by H. W. 
ELPHINSTONE (review), 502 
TYNDALL, J., ‘‘ Contributions to 
Molecular Physics in the Domain 
of Radiant Heat” (review), 504 
ANADIUM, mineral containing, 
IOI 
Varnish, black-brown for metallic 
objects, 110 
