occurrence of the radio-active minerals, the Author deals with some of the metals and other bodies found in these minerals, and gives reasons to support his suggestion that those bodies are among the ultimate disintegration products of the radio-active elements. His conclusion is that such products may include lead, bismuth, barium, the rare earths, hydrogen and argon. The evidence is especially strong that lead is the final product of radium.

W. C. H.

N.B.-Titles in italics refer to Original Papers, and those selected for printing
only are further distinguished by the suffix "(S.)". Abstracted Papers are not so
indicated.

Adam, R., transferred member, 327.

Aigret, C., flora of the plantations on the Belgian State railways, 445.

Air, compressed. Central compressed-air power-plant for heavy railroad con-
struction, 494.

D., B.Sc., elected associate member, 40.

H., elected associate member, 40.

J. T. N., B.E., transferred member, 39.

J. W., transferred member, 327.

Andrews, G. S. B., transferred member, 39.

Angel, R. J., transferred member, 39.

Appleyard, R.- -“ Measurement of Electrical Conductivity of Short Rods,” (S.), 389.
Ardern, E.-Correspondence on Elimination of Suspended Solids from Sewage :
Determination of colloidal matter by dialysis, 155; composition of the solids
retained in bacterial filter-beds, 155; experiments at Manchester on this point,
155; bacterial action in the purification of sewage, 156.

Argenti, E., transferred member, 39.

Ashley, H., transferred member, 39.

Axles." Fracture of Axles Originating in Drilled Holes," L. A. Legros, (S.)
349.

Baashuus, N., preliminary design of turbine installations, 471.
Bacon-Phillips, J. P. R. T. B., admitted student, 39.

Bailey, G. E., borax deposits of California, 478.

Baker, M. N.-Correspondence on Elimination of Suspended Solids from Sewage:
Retention-period for septic action, 156; present practice in regard to tank-
capacities in the United States, 157; land-treatment in American towns, 157;
"free-flow" filters preferable to contact-beds, 158; mechanical filters, 158;
absence of data for ascertaining the comparative costs of various methods of
treatment, 158.

Batley, C. J., transferred member, 39.

Becher, H., B. A., transferred member, 39.

Beg, M. A., admitted student, 39.

Bell, C. N., announcement of the death of, 328.-Memoir of, 401.

Benjamin, J. B., elected associate member, 40.

Berthier, A., fixation of atmospheric nitrogen by electrical processes, 494.
Bidder, M. McC., elected associate member, 328.

Biltze, Prof. W., and Dr. O. Kröhnke.-Correspondence on Elimination of Storm-
Water and of Suspended Solids from Sewage: Physics and chemistry of colloids,
159; value of surface action in the processes of purification, 161.

Binnie, Sir A. R., President.-Discussion on Heat-Economy in Factories: Opening
remarks, 31.-Discussion on Elimination of Storm-Water and of Suspended
Solids from Sewage: Opening remarks, 95.-Discussion on the Railway-Gauges
of India: Opening remarks, 215.

Blackett, J. W., memoir of, 415.

Blair, J. M., memoir of, 416.

Boiler-plate corrosion, 465.

Boilers, accidents to, in France in 1903, 466.

Boltwood, B. B., ultimate disintegration products of radio-active elements, 508.
Borax deposits of California, 478.

Bougeois, H., railway to Mecca, 422.

Boughey, Col. G. F. O.-Correspondence on the Railway-Gauges of India: Cost
of construction of light standard-gauge lines as exemplified by the Southern
Punjab railway, 283; cost of transhipment not sufficient to form an absolute
ground for carrying the metre-gauge lines into seaports, 284; special conditions
of Marmagao and Madras, 284.

Brake-shoes, tests of, 498.

---tests of the power of motors, 504.

Brandão, J., elected associate, 328.

Bräss, improved vans of the German Post-Office, 508.

Braune, H., influence of nitrogen on iron and steel, 482.

Bremner, C. E., transferred member, 39.

Brewster, E. H. G.-Discussion on Heat-Economy in Factories: Balance-sheet
method adopted by the Author first used by Sir Frederick Bramwell and
Sir William Anderson, 35.

Bridge, ferry, across the ship-canal at Duluth, Minnesota, 448.

New Westminster, over the Fraser river, British Columbia, 447.

Poughkeepsie, reinforcing the, 449.

suspension, long-span, stiffening-trusses of, 446.

-towers, Manhattan, design of the post base of the, 450.

Brodie, J. S.-Correspondence on the Elimination of Storm-Water from Sewerage
Systems: Use of gauges, 162; necessity of including in a discharge-formula
the inclination of the area and the rainfall immediately preceding the storm-
observations, 163.

Bruce, Sir G. B.-Discussion on the Railway-Gauges of India: Difference in cost
of the narrow and the broad gauge, 227; conversion to the standard gauge the
proper course for India, 228.

Brunton, J. F.-Correspondence on the Railway-Gauges of India: Necessity of
conversion to the standard gauge, 285; comparative rates of growth of the
standard and the metre gauge, 285; evils of the dual gauge, 286; difference in
the standard of construction of the metre-gauge and standard-gauge lines cited
by the Author, 287.

Bryce, J.-Correspondence on the Elimination of Storm-Water from Sewerage
Systems: Necessity of providing for maximum fall, 163; proportion of water
from partially permeable areas, 164.

Buckling, device for illustrating the phenomenon of, 499.

Burge, C. O.-Discussion on the Railway-Gauges of India: Want of light standard-
gauge lines, 224; difference in cost between main and subsidiary lines in
Australia, 225; ditto between the broad and the narrow gauge, 225; excessive
amount of rolling stock required owing to breaks of gauge, 225; the gauge
question in Africa, 226; conversion to the standard gauge the proper course
for Indian railways, 227.

Bury, 0.-Discussion on the Railway-Gauges of India: The gauge question in
the Argentine Republic and in Egypt, 264; relative capacity of double and
single lines, 267.

Cableway, shipbuilding, 484.

Campion, F. A., transferred member, 39.
Carbutt, Sir E. H., Bart., memoir of, 404.

Cardew, C. E.-Correspondence on the Railway-Gauges of India: Narrow-gauge
feeder lines, 288; light standard-gauge lines, 288; private ownership of railway-
wagons, 288; relative efficiencies of the two gauges, 289; conversion of rolling
stock, 289; cost of transhipment, 289.

Carriages of the New York underground railway, 426.

railway-, lighting of, by inverted incandescent gas-burners, 439.
Cements, determination of the blast-furnace slag contained in, 499.

Chapsal, F., lighting of railway-carriages by inverted incandescent gas-burners,
439.

Chowdry, K. C. R., admitted student, 327.

Chubb, H. W., memoir of, 416.

Clark, H. W.-Correspondence on the Elimination of Suspended Solids from
Sewage: Bacterial action in sand-filters indicated by Massachusetts experiments,
164; clarification in the Authors' experiments probably caused by oxidation of
iron, 164; small proportion of nitrogenous matters retained in the Lawrence
filters, 165; difference between matter retained by contact-beds and sewage-
sludge, 166; difference due to the action of bacteria, 167.
Clarke, T. W. K., B.A., elected associate member, 328.
Coaling of wood by superheated steam, 474.

--station, new naval, at Narragansett Bay, U.S.A., 486.

Coast-protection.

"Sea-Coast Defence- Works in the Netherlands," H. T. H.

Siccama (S.), 374.
[THE INST. C.E. VOL. CLXIV.]

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