Palmer, W. G., catalytic activity
of copper, 44

Paris, world's market in, 119
Partington, J. R., periodic classifi-
cation of the elements, 304
Pascal, Paul, synthetic nitric

acid, 10

Patents, new, 300, 312
Patterson, T. S., slight modifica-

tion in Victor Meyer's vapour
density apparatus, 307
Peachey, S. J., new process for
vulcanising rubber, 5
Periodic classification of the
elements, 269
Perrier, J. and J. Bougault (See
Bougault, J.)
Petrunkevitch, Alexander,

Russia's contribution to
science, 32, 39, 56, 67
Philips, C. and H. Copaux (See
Copaux, H.)
Phosphorus, spectra of absorp-
tion of, for X rays, 268
Physical Society, 7, 202, 286
Pickering, S. F. and J. D.

Edwards (See Edwards, J. D.)
Pickering, W. J., gas manufac-
ture and chemical industry,
282

Pickles, Alwyn, distribution of

acetic acid between water
and charcoal, 49

effect of pressure on gas ab-
sorption, 1

velocity of sorbiton, 25
Poison, when is it not a poison?
37

Porter, Everett E. and Harry B.
Weiser (See Weiser, H. B.)
Portland cement and calcio
cyanamide, 323
Portsmouth Municipal College,

radio frequencies, 63
Pressure and temperature, rela-

tion between, at the same
level in the free atmosphere,

248

Price, A., Victor Meyer's appara-
tus, 249
Profiteering Acts, Central com-
mittee, 60

Profits, are they necessary?, 11

QUINOLINE.

aniline

from
stannichloride, 239
modification of Skraup's synthe-
sis, 205

RADIATION and convection

from heated surfaces, 8
in hydrogen and air explosions,
248

ionisation and excitation of, by
by electron impact in helium,
286

Radio frequencies, generation ot
large powers at, 63
Radio-active elements, constitu-
tion and structure, 243
Radiometer, modified form of,

126

Rain and

snow,

substances

dissolved in, 13
Ramaiah, Y. V. and M. V. N.

Swamy, new form of ozoniser
for laboratory work, 193
Rankine, A. O., proximity of
atoms in gaseous molecules,

272

similar ty between carbon
dioxide and nitrous oxide,
272

Rat extermination in the United
States, 167

Rayleigh, Lord, double refraction

and crystalline structure of
silica glass, 307
re-examination of the light
scattered by gases in respect
of polarisation, 42, 248
Redgrove, H. Stanley, "Bygone
Beliefs" (review), 46
Refractometer for determination
of liquid measures, 273
Relativity, 239, 277, 298
Research, scientific and industrial,

annual report of the commit-
tee of the Privy Council, 169
Richards, Theodore W. and

Norris F. Hall, melting points
and thermo-electric behaviour
of lead isotopes, 185
Richards, Theodore W. and

Jitsusaburo Sameshima, ato-
mic weight of lead from a
Japanese radio-active mineral

Richardson, L. F., convective

cooling and the theory of
dimensions, 9
Richardson, O. W., emission of

electrons under the influence
of chemical action, 272
Ridewood, W. G., calcification of
the vertebral centra in sharks
and rays, 262
Ringelmann, M., selecting oil
cakes, 323
Road transport progress, 179
Robertson, Sir R., physics and

chemistry of colloids and
their bearing on industrial
questions, 313

Robson, H. C., converting high-
grade matte in magnesite-
lined converters, 297

175

|

4

Soderbaum, H. G., The Letters
of Berzelius" (review), 22
Sodium hyposulphite and ful-
minate of mercury, reactions
between, 298

Sodium phosphide, 104, 177
Solutions, influence of ions on
osmotic pressure of, 64
Sorbiton, velocity of, 25
Southcombe, James E. and Henry

M. Wells. (See Wells, H. M.)
Spain, potash deposits in, 48
Spectra, arc, in vacuo, and spark,
in helium of various elements
43

of absorption of phosphorus for
X rays, 268

of luminous gases, effect of
concentration on, 308

of samples of mercury, copper,
zinc and thallium in the
extreme ultra-violet, 298
spark, of various elements in
helium in the extreme ultra-
violet, 43

Temperature and pressure, rela-
tionship between, at the same
level in the free atmosphere,
Thain, W. A., some applications
of electro-deposition in aero-
nautical engineering, 309
Thallium spectrum in the extreme
ultra-violet, 298
Theobromine estimation, 297
Thiel, A., an alleged allotropic
form of metallic lead, 287
Thomas, H. H., and A. F. Halli-
mond, a refractometer for the
determination of liquid mix-
tures, 273
Thomas, J. S. G., electrical hot-
wire inclinometer, 8
Thyroid-feeding and thyropara-
thyroidectomy, effect
upon
the pituitrin content of the
posterior lobe of the pituitary,
the cerebro-spinal fluid and
blood, 295
Tidal friction in shallow seas, 43
motion in the Irish Sea, 44
Tin, atomic weight, 3
estimating, volumetric methods

173

297

estimation of theobromine,

Tin antimony - copper
constitution and structure,
155
Titanium and its industrial appli- Wages and prices, future of, 226
cations, 287
Wahi, Wm. H. and Wm. T.
white industry, Norwegian, 306
Tomkinson, E. sodium phos-

phide, metallic hydrides, 177
Tomkinson, E. and G. Barker,
sodium phosphide, 104
Trade, the trend of, 11
Tram waggons, automatic count-
ing machine for checking, 296
Tree, Katoka, 322
Tungsten, 10

mining in China, 6

VALENCY and ionisation, 83

Vapour density apparatus, Victor
Meyer's, modification, 307
Vegetable tanning materials, true
tanning value of, 90
Vibrations of an elastic plate in

contact with water, 247
Vickers Limited, brass foundry
practice at, 153

Brannt. (See Brannt, W. T.)
Water and charcoal, distribution

of acetic acid between, 49
samples, apparatus for collect-
ing at great depths, 297
Waters, soft, of central New
York, 25
Waterhouse, E. F. and W. R.
Schoeller. (See Schoeller,
W.R.)
Wave-length determinations,

effect of asymmetry on, 308
Wax, Carnauba, 322
Weeks, H. B.,, brass foundry

practice at Messrs. Vickers,
Limited, 153
Weirum, H. F., magnesite and
Shell-making, 203
Weiser, Harry B. and Everett E.

Porter, spontaneous evapora-
tion, 80
Wells, Henry M. and James E.
Southcombe, lubrication and
the germ process, 133

nerite, 22

West, Gilbert D., modified form
of Crookes radiometer, 126
Whales, diatoms on the skin of,

45

Wheat, nitrogen and phosphoric
acid of, 262

Wilde-Barfield electric furnaces,
215

Williams, A.M., forces in surface
films, 273

Williams, H. G., ammonia-soda
process, 295
Wilson, E., measurement of low

magnetic susceptibility by an
instrument of a new type, 308
Wilson, John Arthur, hydration

as an explanation of neutral
salt effect, 74
Wilson, John Arthur and Erwin
J. Kern, true tanning value of
vegetable tanning materials,
90

Winslow, Alfred A., development
of kauri gum industry in
New Zealand, 52