Inturbine (New Trade Mark), 287.
Investigation into the analytical chemistry
of tantalum, 267.

Investigation of the air-flow pattern in the

wake of an aerofoil of finite span, 379.
Inventions, Trade increase and, 409.
Irish Free State patent laws, 153.
Irish glass, 396, 409.

Irregular astigmatism of the eye, 345.
Is radiation directed quanta?, 277.
Isomerism and oximes, 268.

Isomerism, Studies of dynamic, 361.
Italian foreign trade, 91.

JOINTLESS floors, 311.

Juritz. M.A., Retirement of Dr. Charles F.,
70.

KHEPERUM (New Trade Mark), 223.

Kinetics of the reaction and the light
absorption of wet and dry boron, 379.
379.

Kinetic Properties of a gas jet, The, 363.
Kinetic theory of surface films, 378.
Komo (New Trade Mark), 351.
Kyltah (New Trade Mark), 111.

Methods of analysis, Critical studies on, 65,
97, 113.

Mica, 142.

Mica discovery looks big, 152.
Mica in Canada, 198.

Micro-organisms damage leather, 247.

Mineral elements in animal nutrition, The,
257, 264.

Mineral elements in animal nutrition, 346.
Minerals in the arctic circle, 152.
Miners, Silicosis among, 353.

Mines and mineral deposits of Canada, 119.
Mining metallurgy, Some applications of
geology to, 119.

Monoazo and diazo dyes, 110.
Moon's surface, 177.

More notes on acocantherine, 40.
Motor fuel, Liquefaction of coal as, 264.
Muscular exercises, 313.

NAPHTHALINE derivatives, Prepara-

tions of some, 49.

Nazol (New Trade Mark), 351.

New method for preparing pure hydrogen,

407.

New steels and their properties, 181.
New zinc refinery in Canada, 105.
Nitragine (New Trade Mark), 79.
Nitrogen peroxide (New Patent), 230.
Non-inflammable compositions, 62.

OBSERVATIONS on spinal decerbrate

knee-jerks, 312.

Old Yorkshire glasshouses, 380.

Old readers of the Chemical News, 91.
Oldest chamber of commerce, 24.
Olefine oxides (New Patent), 174.

On the transformation temperature of
thallium, 89.

Organic compounds of arsenic, 358.
Organic derivatives of antimony, 93.
Origin of earthquakes, The depth of, 412.
Oxide films on copper at ordinary tempera-
tures, 268.

Oxidimetric estimation of tungsten, 260.
Ozone, Thermal decomposition of, 253.
PALM kernel oil and butter in margarine,

Determination of, 381.

Panama canal traffic, 409.

Patent laws in the Irish Free State, 153.
Pedestal rocks in stream channels, 230.
Periodical publications, 221.

Periodicities in weather, 204.

Peroxide of barium, A new, 268.

Petroleum spirit, The determination of un-

saturateds in, 316.

Pharmacists in the Army, 407.

Photo-active constituent in wet bromine,

379.

Photochemical reactions in liquids, 253.
Physical and chemical survey of the
national coal resources, 13.

Physical society of London, 16th annual
exhibition, 388.

Physicist in agriculture, 346.

Pig iron output increase in U.S.A., 262.
Pipe coverings, High temperature, 90.
Plant life, 281.

Portland cements, Materials and composi-
tion for, 15.

Potatoe culture, 349.

Potentine (New Trade Mark), 351.
Poultry farming, Canadian, 24.

Power losses in magnetic sheet material at
high flux density, 399.

Preparation of some naphthalene deriva-
tives, 49.

Preparation of metal picrates and trinitro-
benzoates, 210.

Prevention of coal dust explosions, 326.
Production of oxide films on copper, 268.
Productive capacity in Germany, 343.
Productivity of sulphuric acid by electroly-
sis, 385.

Progressive Japan, 281.

Prosperity of the United States, 327.
Prufitol, (New Trade Mark), 175.

Pulp and paper in Canada, 138.
Pulverised fuel, 7.

Pulverised fuel and low temperature car-
bonisation, 54.

Pure hydrogen, A new method of preparing,

407.

Purification of water, Quick lime and
hydrated lime for use in, 121.

Purifying oils and other liquids (New
Patent), 190.

QUANTA, Is radiation directed, 277.

Quartz, The structure of, 61.
Quede (New Trade Mark), 79.
Quicklime in the manufacture of sugar, 198.
Quicklime in purification of water, 121.
Quotations for chemicals for Egypt, 181.

RADIANT heat superheaters, 23.

Radiation directed quanta?, Is, 277.
Radioactive stimulants, French agricul-
tural, 406.

Railway centenary celebrations, 24.
Reclamation of gasoline used in dry clean-
ing, 163.

Refrigerators, Insulation for. 162.

Refuse fuels, 42.

Regefine (New Trade Mark), 175.

Relation between bismuth trisulphide and
hydrochloric acid, 294, 386.

Relation between heating value of gas and
its usefulness to the consumer, 278.
Relation between the velocity of photo-
chemical reactions, 220.

Roche (New Trade Mark), 223.
Rocks in stream channels, Pedestal, 230.
Roumanian radio-electric law, 91.
Royal Photographic Exhibition, 234.
Russio, Coal mining industry in, 216.

SAND lime bricks, 163.

Scientific research, 360.

Scientific research work in Demarara, 88.
Search for element 93, 273, 337.
Sedin (New Trade Mark), 206.

Seed corn kernels, Fungous infection of, 258.
Sensitometer, 354.

Separation of copper, Electrolytic, 225.
Silicosis among miners, 353.

Silver in the eastern states, U.S.A., 137. Slice cut out of hill that Stephenson bored, 40.

Smoke nuisance, 138.

Soaps, and the theory of colloids, 140. Sodium atoms driven through glass, 296. Sodium chloride, Manufacture of, 122. Sodium pentaborate, 351.

Solids, The chemistry of, 168, 250.

Some applications of geology to mining metallurgy, 119.

Specialists and libraries, 249.

Spiro compounds with reference to formation and stability, 259.

Spirometer method of studying the gaseous metabolism of man, 313.

Steam generation efficiency, 136.
Stella (New Trade Mark), 255.
Sterilisation of towns' water, 341.
Strontium, The structure of, 3.
Structure of cadmium, 290.

Structural isomerism and oximes, 268.

Superal (New Trade Mark), 111.

Surface tension theory of muscular contrac

tion, 313.

Suspended particles and Avogadro's number, The diffusion of, 187.

the polyacetic acids of

methane, 131.

Synthox, 127.

VAC

Sub-dividing glue, 126.

Sulphates in gun-cotton, The determination

of, 267.

Sulphur in sulphates by microbial action, Transformation of, 406.

Sulphuric acid from a quadruple mixture,

Use of liquid amalgams in volumetric analysis, 261.

ACUUM furnace, An improved form of electric, 412.

Valency, Studies of, 362.

Valency relations, 50, 87.

Value of chemistry in education, 69.
Value of exhibitions and fairs, 310.
Value of gas, 278.

Value of industrial research, 6.
Vaterite and u-calcium carbonate, 262.
Velocity of photochemical reactions, 220.
Viscosity of ammonia, 362.

Viscosity of glass, 61.

Optical Society,

Association of British Chemical Manufac-
turers, 72.

British Association for the Advancement of
Science, 153, 166,183, 201, 217, 234,
250, 267, 282, 346.

Chemical Society, 268, 361.

The spatial structure of cycloparaffins, by
W. A. Wightman, 59.

Echitamine, by J. A. Goodson and T. A.
Henry, 59-379.

Chemical, Metallurgical and Mining Society
of South Africa, 300, 382, 412.
Faraday Society, 13, 76, 188, 224, 253, 331,
412.

Geological Society of London, 93.
Institute of Chemistry, 269.

Prof. G. G. Henderson, Presidential
Address, 12.

Institute of Electrical Engineers, 286, 298,

364, 391.

Institute of Metals, 76, 108.

Institute of Mining and Metallurgy, 254,
303.

Institute of Petroleum Technology, 238,
316.

Institute of Physics, 346.

Junior Institution of Engineers, 330, 365.
Mineralogical Society, 75, 286, 329.

The changes in the form of the crystalline
lens in accommodation, 254, 299, 345.
Physical Society of London, 125, 269, 299,
330, 362, 393.

A magnetic bridge for testing straight
specimens, 26.

On mass and energy, 105.
Royal Agricultural Society, 108, 330, 413.
Royal Institution, 123, 140, 286, 303, 392.
Royal Microscopical Society, 75, 285.
Royal Society of Arts, 286, 302, 315, 360,
396, 409.

Sir John Cass Technical Institute, 182, 383.
Society of Glass Technology, 269, 315, 317.
Nature and constitution of glass, by

Prof. E. Turner, Prof. G. Tammann,
Sir W. Bragg, Vaughan A. Stott, and
others, 60, 254, 380.

Society of Public Analysts, 381, 394.
The Royal Society,

B-Ray spectra of thorium disintegration
products, by Sir E. Rutherford, 10.
Tensile tests of crystals of an aluminium-
zinc alloy.-Distribution of intensity in
the X-ray spectra.-High frequency
fatigue tests, 11.

Series of papers, 26, 302, 312, 328, 344,
360, 377, 391.

Pedestal Rocks in Stream Channels, 230.
Butler, J. A. V.:

The Seat of the Electromotive Force of
the Galvanic Cell, 346.

Carter, Thomas :

The Engineer, 364.

Cheney, Walter, L. :

Effect of Wear and Tear on the Magnetic
Properties and Tensile Strength of Steel
Wire, 325.

Collins, Hawksworth, B.A. (Camb.):
The Structure of Strontium, 3.
Active Hydrogen, 33.

The Structure of Zinc, 145.

The Structure of Magnesium, 212.
The Structure of Cadmium, 290.
The Structure of Manganese, 355.
The Structure of Tin, 403.

Congdon, Leon A. :

Zinc, 65, 81, 97, 113.

David, Prof. W. T.:

Ignition of Gases, 282.

Davis, Raymond :

A Non-Intermittent Sensitometer, 354.
Desch, Prof. Cecil H., D.Sc., F.R.S.:
Chemistry of Solids, 168, 183, 201, 217,

A Chemical Property of the Fourth
Dimension, 373.

Hanus, J., A. Julek, and J. Lukas :
Benzoylmethylglyoxime as a Precipitant
of Palladous Salts, 401.

Holland, Sir Thomas H., D.Sc. :

Scientific Research, 360.

Hunter, R. F., B.Sc. :

The Action of Halogens on Phosphorus
Pentasulphide, 38.

The Synthesis of Polyacetic Acids of
Methane, 131.

Spiro Compounds, 257.
Ingold, C. K. :

The Influence of Carbon Rings on the
Velocity of Reactions Involving their
Side Chains, 379.

Ishibashi, Masayoshi :

Electrolytic Reduction of Oximes, 386.
Johnson, N. K. :

A Study of the Vertical Gradient of Tem-
perature of the Atmosphere Near the
Ground, 187.

Juritz, Chas. F. M. A.:

Chemical Investigation in Regard to
Citrus, 309.

Krauz, Professor C. :

Decomposition of T.N.T. by the Action
of Sunlight, 193, 209, 226, 241.
Kotaro Honda :

On the Law of Depression of Freezing
Points in Metallic Alloys, 374.

Lamb, Prof. Horace, Sc.C., LL.D.:
Before British Association, 166.
Ledburn, E. B., D.Sc. :