1872.] 
Dovuatas, J., copper mines of Chili, 
159 
Dover, geology of Straits of, 208 
Drawings, copying, 128 
DrepceE, J., and W. H. Maw, ‘“ Mo- 
dern Examples of Road and 
Railway Bridges ’’ (review), 507 
Dryer for paints and varnishes, 408 
DrysDALeE, J., and J. W. Haywarp, 
*“ Health and Comfort in House 
Building,”’ (review), 503 
DupceEon, R. E., ‘‘ Mechanism of 
Accommodation for Near and 
Distant Vision”’ (review), 505 
Dust, microscopic examination of, 
118 
Dyeing veneer wood, 408 
Dyes known to ancients, IIo 
Dynamite, experiments with, 278 
ae ARTH?’S Crust,” by D. Page, 
(review), 377 
“ Eclipse, Solar, of Dec. 22, 1870, 
Observations of” (review), 370 
Electric bell, aneroid, 531 
— currents, induction of, 273 
— — from bending of metals, 273, 404 
— light in lighthouses, 274 
— probe, 275 
— spark, measurement of time of, 129 
“Electric Telegraph, Description of 
an,” by Sir F. RonaLps (review), 
82 
Electrical phenomena, atmospheric, 
129 
Electricity, condudtibility of liquids 
for, 276 
— progress in, 126, 273, 402, 531 
Electro-magnetic induction, 126 
Electroscope, curious effect observed 
in gold leaf, 533 
ELPHINSTONE, H. W., ‘ Patterns for 
Turning” (review), 502 
EMERSON, J., ‘‘ Treatise on the Man- 
ner of Testing Water-Wheels 
and Machinery ”’ (review), 506 
Enamel for copper cooking utensils, 
540 
Engineering, progress in, 102, 263, 
391, 522 
Erecting binocular microscope, 269, 
398 
Erector for microscope, 123 
Exhibition, Vienna, 526 
Explosive agents, 395 
— compounds, temperature of, de- 
tonation of, 272 
— substances used in mining, 99 
Fe: extraction and purification 
of animal, 112 
INDEX. 
947 
Faraday le&ure of the Chemical 
Society, 409 
Felspars, alteration of, 390 
— constitution of, 261 
— researches on, IOI 
FERRIE’S puddling furnace, 260 
Ferro-tungstine, 520 
Fibres, vegetable, microscopic exam- 
ination of, 399 
“Figure of the Earth, New Theory 
of,” by W. OaiLBy (review), 382 
Finois, F. J., ‘‘ Hypothesis”’ (review), 
595 
Flames, radiant power of, 123 
— singing, 518 
— vibrations of, 123 
FLemMiInG, G., ‘ Animal 
(review), 81 
Flight, natural and artificial, 27, 182, 
457 
Food, preparation of, 108 
“ Formulas, New, for the Loads and 
Deflections of Solid Beams and 
Girders,” by W. DOoNALDSON 
(review), 504 
Foundations, subaqueous, 393 
“Friction, ‘Treatise on the Theory 
of,” by J. H. JELLETT (review), 
Plagues ” 
3 
peo P., “Curve Tracing ” (review), 
378 
Puchvine alcoholic solution of, 527 
Fuel in blast-furnaces, economy of, 
389 © 
— pulverised, 104 
ALVANOMETERS, _ sensitive- 
ness of, 276 
Gas analysis, new apparatus for, 113 
— occluded in coal, 114 
— furnace, 272 
— patent, 105 
Gases evolved from Bessemer con- 
verter, 100 
— influence of pressure on spectra 
of, 521 
Geology of Straits of Dover, 208 
‘Geology, Treatise on,” by R. TaTE 
(review), 85 
Glass, ancient Jewish, analysis of, 113 
— printing on, 110 
— tubes, bending wide, 409 
Glue, liquid, 408 
Glucose, conversion of cane-sugar 
into, 116 
Glycerine, employment of in tanning, 
409 
Gold coinage, 224 
— colouration of glass by, 119 
— in New Caledonia, 259 
Goniometer, eye-piece, 270 
