55° 
““Ordnance rifled, Construction and 
Manufacture of,’’ by Capt. F. S. 
STONEY (review), 363 
‘Organic Philosophy” (review), 79 
ORMATHWAITE, Lord, ‘ Astronomy 
and Geology compared ” (review), 
374 
Out R. D., ‘‘ Debatable Land be- 
tween this World and the Next ”’ 
(review), 237 
“‘ Oxford and Valley of Thames, Geo- 
logy of,” by J. PHiLuirs (review), 
35 
Oxyhydrogen light, 119 
Ozone, generation of, 403 
AGE, D:, (othe Earthis, Crust” 
(review), 377 
Painting on tin-foil, 408 
Paraffin, action of sulphur on, 115 
— experiments on joint effect of pres- 
sure and heat upon, 530 
Panification, new process of, 110 
Paper at the International Exhibition, 
463 
Paris sewage, 392 
Patent gas, 105 
‘‘Pereira’s Elements of Materia 
Medica” (review), 372 
Perfume from Arabia, 411 
Petroleum, cleaning glass vessels 
from, III 
— for fuel, 108 
— testing, 537 
PHILuips, J., ‘*Geology of Oxford 
and Valley of the Thames ”’ (re- 
view), 368 
Phosphate of lime, 278 
— — from South of France, 102 
Phosphorescence produced by friction, 
128 
Phosphorus bronze, 112 
Photography as an aid to locksmiths, 
II 
Photographic latent image, new theory 
of, 118 
Photographs of microscopic objects, 
121 
“Physics,” by B. STEWART (review), 
3 
ss Pigaicn Elementary Treatise on”’ 
by E. ATKINSON (review), 83 
Physiological position of tobacco, 479 
Pigments known to ancients, IIo 
Pitticite, analysis of, ror 
Planet, new, 269 
Polarisation of eletricity, 275 
Potassium, reduction of by sodium, 
115 
Ponton, M., spectroscope, its imper- 
fections and their remedy, 47 
INDEX. 
[October, 
Portland breakwater, 525 
Powder, modern cannon, 58 
Printing on glass, I10 
— telegraph, 127 
Prisms, compound, I1g 
ProcrTor, R. A., *‘ A new Star Atlas ”’ 
(review), 378 
— construction of the heavens, 308 
— ‘‘Essays on Astronomy” (review), 
500 
— meteoric astronomy, 137 
Projectiles, medizval and modern 
compared, 333 
Pseudomorphism, instances of, 390 
Psychic force, 136 
Public health ad, 454 
Pucherite, new mineral, ror 
Puddling furnace, Danks’s, 259 
— — Newport, 388 
— machine, rotary, 387 
— mechanical, 99 
Pulverised fuel, ro4 
‘‘ Pyramid of Gizeh,” by A. F. D. 
WACKERBARTH (review), 85 
Pyro-plating, 536 
Pyrites, roasting, 261 
UEENSLAND, mineral resources 
of, 507 
ABBLE, rotating for puddling 
furnaces, 387 
Radiation of heat by flames, 123 
Railway projects, 264, 523 
Red blood corpuscles, experiments on 
the, 134 
Refrigerator, dynamic, 530 
Relay, telegraphic, 404 
Resin, fossil, ror 
Reversing rolling mills, 520 
“ Road and Railway Bridges, modern 
examples of,’ by W. H. Maw 
and J. DREDGE (review), 507 
Rock-boring, machine for, 519 
Rockets for night telegraphy, 119 
Roepperite, mineral, 521 
RoNnaLDs, Sir F., ‘‘ Description of an 
Electric Telegraph” (review), 82 
Roscoz, H. E., ‘* Chemistry” (re- 
view), 377 
Rubber-graphite paint, 538 
Se apparatus for mines, 
\ 258 
— lamp, 386 
Sand blast, 265 
Sanps, B. F., ‘‘ Observations of the 
Total Solar Eclipse of Dec. 22, 
1870” (review), 370 
Sansom, Dr., ‘‘ The Antiseptic Sys- 
tem” (review), 77 
