Gross, I. W., theoretical investigation of electric-transmission systems and

short-circuit conditions, 531.

Groynes. See Mortar.

Gumaer, P. W., economic operation of electric ovens, 530.

Guns, ammunition and accessories, 540.

Gwyther, F. E.-Correspondence on Prevention of Malaria: Malaria in the
Punjab, 41; irrigation and drainage, 42.

Haarman, J. H. A., lateral stiffness of lattice-girder bridges, 490.-Standard
specifications for railway- and tramway-bridges in the Dutch East Indies, 491.
Hamer, W. H.-Correspondence on River Clyde and Glasgow Harbour : Quays,
164; handling of vessels in the river, 164; depth, 164.

Hammersley-Heenan, J.-" Concreting in Freezing Weather, and the Effect of
Frost upon Concrete": Reply to Correspondence: Difference between laboratory
experiments and practice, 287; use of hot water, 288; frozen concrete, 288.
Harbour- and coast-works, Denmark, details of, 494.

Improvement Works, Otago Harbour,' J. B. Mason (S.), 436.-
Wharves, 440; Rattray street wharf, 440; Kitchener street wharf, 440;
Victoria wharf, 441.-Reclamation, 442.-Harbour-entrance, 443.-Main
channel, 446.

Harding, W. J., obituary notice, 470.

Harrington, R. E. See Powell and Harrington.

Hartley, Sir C. A., memoir of, 464.

Hauser, K., mechanical appliances of the Munich market, 500.

Haynes, P. E., street-lighting in Chicago, 482.

Hebblethwaite, F. H.-Correspondence on Prevention of Malaria: Drainage-works
in the State of Rio de Janeiro, 48.

Hederstedt, H. B., obituary notice, 470.

Hellmund, R. E., advantages and limitations of railway-motor ventilation, 527.
Hermanns, H., German ball-bearing manufacture, 496.-Inspection in a German
ball-bearing factory, 496.-Recent Siemens-Martin steelworks, 517.

Highway department, organization of a large municipal, 491.

Hijmans, E., developments in machine-moulding, 499.

Hinderlider, M. C., rock-fill dam with unusual foundation problems, 492.
Hinkamp, C. N., submarine-improvements, 537.-Submarines and torpedoes, 537.
Hodge, L. P.-Correspondence on Prevention of Malaria: Preventive measures in
British Guiana, 50; tree-planting, 51; legislation, 51; rain-water tanks and
gutters, 52; quinine, 53.

Hogue, O. R., and A. O. Dicker, factory lighting, 481.

Hoist, Granite-Mountain, electric equipment for the, 500.

Hoisting-equipment, direct-current control for, in industrial plants, 526.
Holbrook, E. A., wood as fuel for small-boiler firing, 520.

Hollingworth, E. W.-Correspondence on River Clyde and Glasgow Harbour
Reinforced-concrete monolith shoe, 165.

Hoppers, controlling the outflow of heavy materials from, 499.

Houmöller, F., motor-craft for special services, 536.

Howard, E. E., Twelfth-Street trafficway viaduct, Kansas City, Missouri, 491.

Hubback, T. R.-Correspondence on Prevention of Malaria: Use of quinine, 54.

Hunter, W. H.-Correspondence on River Clyde and Glasgow Harbour: Rock-
removal, 165; design of dock- and quay-walls, 166; hydraulic cranes, 167;
sheds, 167; coal-hoists, 168.

Hydro-electric developments, Cedars, St. Lawrence river, 532.

installation in the Pyrenees to supply Barcelona and Catalonia, 531.
station at Capdella, Pyrenees, 531.

at Refrain on the Doubs, 531.

Hysteresis, elastic, experiments on, 517.

Ice-making as a by-product of central stations, 501.

Illuminants, colour of, 479.

Imlay, L. E., effect of moisture in the earth on temperature of underground
cables, 533.

Impact, notch-, tests and the law of similarity, 487.

Impregnating-tanks, large, for electric equipment, 530.
Induction, electric, general definition of, 524.

Industry, German, scientific aid in the strife with, 541.
Insulator-depreciation and effect on operator, 528.

--testing, provisional specification for, 528.

Insulators, bushings, leads and, effect of altitude on the spark-over voltages of, 528.
Internal-combustion engines at the Berne Exhibition, 1914, 502.
Iron and concrete, adhesion between, 489.

-, cast-, manufacture, recent developments in, 515.

conduits, deteriorating effect of wood concrete on, 515.

electrolytic, melted in vacuo, magnetic and other properties of, 515.
Isaachsen, E., absorption of water from the air by timber, 489.
Ives, H. E., physical photometry, 484.

and E. F. Kingsbury, choice of a group of observers for heterochro-
matic measurements, 485.-Method of correcting abnormal colour-vision and its
application to the Flicker-photometer, 485.

Janson, E. N., stresses in steam-balanced valve-gears, 538.

Jenkins, A. L., formulas for forced and shrunk fits, 497.

Johnson, J. E., jun., recent developments in cast-iron manufacture, 515.

T. R.-Discussion on Impact Coefficients for Railway Girders:
Australian experience, 235; transferred loading, 236.

Joint, universal, friction-losses in the, 497.

Jollyman, J. P., P. M. Downing and F. G. Baum, experience of the Pacific Gas
and Electric Company with the grounded neutral, 533.

Jones, H. E.-Discussion on Electrolysis: Chemical reactions in mild steel, 81.
L. A., colour of illuminants, 479.-New standard-light source, 483.

Jordan, C. W., recent advances in indoor gas-lighting, 482.

Juul, N. C., test-resistances for large electric generators, 528.

Kapff, von, tests of solid lubricants, 519.

Keep, G. A., new chloridizing-leaching practice, 514.

Kellog, L. O., the war and metals, 513.

Kennedy, W. P., working costs of commercial electric vehicles, 495.

Kennelly, A. E., R. W. Chadbourn and G. D. Edwards, approximate uniform
photometric point-source, 484.

Kent, W., classification of heating-value of American coals, 519.
Kingsbury, E. F. See Ives and Kingsbury.

Kirkpatrick, C. R. S.-Discussion on River Clyde and Glasgow Harbour: Sink-
ing of monoliths, 140; cost and design of No. 3 dock, 140; sheds, 141;
granary, 141; tidal regime, 141; dumb hoppers and steam-hoppers, 142.
Kittredge, G. W.—Correspondence on Impact Coefficients for Railway Girders:
Impact formulas and rules in use in America, 247.

Klingenberg, K. S., triangulation for economical surveys, 479.
Koopman, C. G. J. W., electric switch-control at Utrecht, 529.
J. F. H., mechanical manufacture of bottles, 497.

Kursteiner, L., water-power station at Refrain on the Doubs, 531.

Laboratory, mechanical-engineering, Delft University, 495.

Lamb, H. K.—“ A Rapid Method of Contouring Plans in the Field” (S.), 461.

M. R., Chilian nitrate industry, 518.

Lamp, arc-, photometry, the integrating sphere and, 484.

Lamps, gas-filled incandescent, photometry of, 483.

Incandescent headlights and projectors, 483.

-, switching-in circuit of, 529.

tungsten-filament, for the lighting of metal-working plants, present
practice in the use of, 481.

Larsen, A., telephone-disturbance its cause and remedy, 535.

La Touche, J. N. D.-Discussion on Impact Coefficients for Railway Girders:
Need for determination of impact questions in India, 233; life of girders, 234;
his measurements of stresses in girders, 234.

Lawson, A. J.-Discussion on Electrolysis: Efficiency of Board-of-Trade regula-
tions, 92; electrolysis in America, 93.

Le Chatelier, H., scientific aid in the strife with German industry, 541.
Leipold, A., Berlin east harbour, 494.

Leitch, D. C.—Correspondence on River Clyde and Glasgow Harbour: Area of
channel and basins, 168; quay-walls, 168; construction of dry docks, 169.
Leon, A., and R. Zidlicky, distribution of stress in perforated plates, 486.
Leslie, Sir Bradford.—Correspondence on Impact Coefficients for Railway Girders:
Action of moving loads on girders, 250; ballast, 251; local destructive effect
of impact, 251.

Library of The Institution, 298.

Light. Artificial daylight, its production and use, 480.

developments in the projection of, 484.

-, new standard, source, 483.

Planning for daylight and sunlight in buildings, 481.
Safeguarding the eyesight of school-children, 480.

Lighting, car-, problems, practical study of, 482.

Lindley, Sir W. H.-Discussion on Prevention of Malaria: Preventive measures

in connection with Baku water-supply, 27.

Lindquist, D., modern electric elevator and elevator-problems, 500.

Locomotive-headlight, 508.

heavy 2-10-2 type, 507.

Locomotives, electric, 507.

pulverized fuel for, 508.

suburban, for the Grand Trunk railway, 507.

towing-, electric, of the Panama Canal, 494.

Loeb, Leo, heat-transmission in feed-water heaters and tube-length, 502.
Lubricants, solid, tests of, 519.

Luckiesh, M., safeguarding the eyesight of school-children, 480.

and F. E. Cady, artificial daylight—its production and use, 480.
Luiggi, Luigi.—Correspondence on River Clyde and Glasgow Harbour : Dredging,
170; quay-walls, 170.

Lulofs, W., deteriorating effect of wood concrete on iron conduits, 515.

Lumber industry, electricity in the, 530.

Lyman, J., L. L. Perry and A. M. Rossman, protective reactors for feeder-
circuits of large city power-systems, 530.

Lymn, A. H., gas-producers with by-product recovery, 521.

Lyster, A. G.-Discussion on River Clyde and Glasgow Harbour: Future
problems in port construction, 142; size of ships and shipping-dues, 144.

McDaniel, A. S. See Rosa, Vinal and McDaniel.

MacDougall, A.-Discussion on Electrolysis: Effect of river-water on oil-tank
plates, 92.

McDowell, C. S., searchlights, 483.

Machine-moulding, developments in, 499.

Mackenzie, A. C.-Correspondence on Impact Coefficients for Railway Girders:
Comparison of Canadian and Indian railway conditions, 252.

McLain, R. H., industrial control in the foundry, 525.

Magnetic fields, reluctance of some irregular, 524.

Malaria. See Engineering.

Malcolmson, W. J. See Walker and Malcolmson.

Marine engineering, development of, in Germany, 535.

Market, Munich, mechanical appliances of the, 500.

Marks, L. B., and J. E. Woodwell, planning for daylight and sunlight in
buildings, 481.

L. S., clinkering of coal, 519.

Markwart, A. H., engineering problems of the Panama-Pacific exhibition, 487.
Martineau, Wm., obituary notice, 471.

Marvin, H. A., development of ore-concentration, 514.
Mason, J. B.-

1

Improvement Works, Otago Harbour" (S.), 436.

Sir Thos." The Improvement of the River Clyde and Harbour of
Glasgow, 1873-1914," 101.-Discussion: Clyde Trust engineer, 153; Clyde
purification, 153; river passenger-traffic, 154; goods rates and shipping dues,
155; dredging, 156; electric and hydraulic power, 157; cylinder-sinking, 158;
mass-concrete and block-work, 159; monoliths, 159; graving-docks, 160;
tides, 161; operation and cost of hoppers and dredgers, 162; sheds and
quays, 163; execution of the work, 164.-Correspondence: Quay-walls, 172,

173; river-traffic, 172; monolith-shoes, 172; rock-breaking, 173; coal-hoists,
173; river-channel, 173; graving-docks, 173; monoliths, 174; tidal regime,
174; depth, 174.

Mass-production, heat-treating equipment and methods for, 516.

Mathematical education of engineers in different countries, 485.

Mathematics. Practical method of solving integrals applied to the determination
of static moments and moments of inertia, 485.

Mathews, H. M., obituary notice, 471.

J. A., and H. J. Stagg, jun., factors in hardening tool-steel, 516.
Matthews, Sir Wm.-Discussion on River Clyde and Glasgow Harbour: Improve-
ment in the state of the river, 139; dredging, 139.

Mawson, R., making steam-headers and steam separators by the oxyacetylene
method, 518.

Mayer, E. C. See Bedell and Mayer.

Medals and premiums awarded for the Session 1913-14, 314.

Meeting, Annual General, 289.

Meetings of The Institution during the Session 1914–15, 297.

special general, for the alteration of By-laws, 320, 327.

Meik, C. S.-Discussion on River Clyde and Glasgow Harbour: Tides, 150;
hydraulic v. electric power, 151; sheds, 151; large vessels and harbour depths,
152.

Mesnager, A., rapid graphic method of calculating arches, 489.

Metal-spray processes in engineering and art, 517.

Metals, metastability of, allotropy as a cause of the, 512.

scrap-, non-ferrous, foundry use of, 513.

the war and, 513.

Meters, use of, on the Chicago and Milwaukee line, 530.

Meyer, A. F., computing run-off from rainfall and other physical data, 486.
Middleton, W. I., and C. L. Dawes, voltage-testing of cables, 533.

Mine-ventilation, study in, 512.

Minick, J. L., locomotive-headlight, 508.

Mining-blast, big, 512.

"Mo-Ler." See Mortar.

Momber, development of marine engineering in Germany, 535.

Mono-rail track at Genoa, 505.

Montijn, P. M., correct gear-ratio of tramcar-motor gear-wheels, 509.

Mortar. "Experiments upon Mortar, and Diatomaceous Earth as Puzzolana, in
Sea-Water; with special reference to Groynes in Denmark," A. Poulsen (S.),
409.-Groynes in Denmark, 409; details of groyne-construction, 412.-Com-
parative experiments upon mortar in sea-water, 414.-Diatomaceous earth for
use with cement as puzzolana, 415.

Motor-boat "Gallia," 536.

-coaches. New York municipal-car general equipment, 527.

-craft for special purposes, 536.

-cylinder lubrication, 519.

Motors, alternating-current, classification of, 526.

electric-traction, pressed-steel, 527.

Mounce, R. S., Southern locomotive-valve-gear, 508.

Münzinger, F., test of a 15-HP. Diesel engine, 503.

Murray, W. S., conditions affecting the success of main-line electrification,