PAGE

REPORT ON WATER SERVICE.

483

Revision of Manual

486

Study of Progress of Regulations of Federal or State Health

Authorities Pertaining to Drinking Water Supplies...

487

Effect of Local Deposits on Pollution of Surface and Shallow

Well Water Supplies....

490

Pitting and Corrosion of Boiler Tubes and Sheets.

493

Specifications for Various Chemicals Used in Water Treatment. 498

Centrifugal Pumps for Railway Water Service..

Specifications for Cast Iron Pipe and Special Castings..

University Work in Connection with Railway Water Supply.... 527

508

514

REPORT ON UNIFORM GENERAL CONTRACT FORMS.:... 529

Revision of Manual...

534

Form of License for Wires, Pipes and Conduits and Drains on

Railway Property

Tentative Specifications for Cold-Drawn Steel Wire for Con-

crete Reinforcement

545

Abrams' Selective Concrete Strength Tests.....

547

Joint Committee on Specifications for Concrete Pipe..

Comments on Report of Joint Committee on Concrete.

Plans of Turnouts, Crossovers, Slip Switches and Crossings.... 579

Plans and Specifications for Track Tools......

581

Specifications and Unit Track Work Schedules for Contracting

Maintenance Work

599

.....

Plans and Specifications for Switch Stands, Switch Lamps and

Switch Locks

611

Gages and Flangeways for Curved Crossings....

614

Tests of Tie Plates Subject to Brine Drippings...

617

Investigation on Reduction of Taper of Tread to 1 in 38 and on

Canting the Rail Inward....

619

REPORT ON RAIL.....

Rail Failure Statistics for 1920..

Rail Inspection

Formula for Elongation of Rails in the Drop Test..

PAGE

621

625

636

651

Bibliography and Discussion of Interior Fissures in Rails....... 655

REPORT ON ECONOMICS OF RAILWAY LABOR..

669

Plans and Methods for Obtaining Railway Labor...

Methods for Training and Educating Employees in Engineering

670

... 674

and Maintenance Work....

Method for Performing Maintenance of Way Work for the Pur-

pose of Establishing Units of Measure of Work Performed. 680

Best Method of Fireproofing Wooden Bridges and Trestles..... 722

REPORT ON ECONOMICS OF RAILWAY OPERATION......

Methods for Increasing the Traffic Capacity of a Railway.

Effect of Speed on the Cost of Operation...

727

729

746

Methods for Analyzing Costs.......

748

The Economical Operation of Trains Against the Current of

Traffic on Multiple Track Railways.....

750

764

Operation of One-Engine and Two-Engine Trains....

REPORT ON BUILDINGS........

Specifications for Buildings for Railway Purposes.

Ice Houses and Icing Stations.

THE FLAT DISK CENTER FOR TURNTABLES—By B. R.

Leffler, Bridge Engineer, New York Central Railroad, West of

Buffalo

...

JOHN FINDLEY WALLACE-A Memoir...

177

185

COLONEL GEORGE HERBERT WEBB-A Memoir......

195

CONSTITUTION