MATERIAL, SERVICE AND

EQUIPMENT DIRECTORY

This is a new feature of the "Proceed-
ings" which was initiated in the 1926
edition.

It is planned to build up a "Directory"
that will be of similar value to Munici-
pal Engineers, Contractors, Material
and Equipment Manufacturers and
Dealers that "Sweet's Catalogue" is
to Architects and the "Condensed
Catalogue" of the American Society of
Mechanical Engineers is to Mechan-
ical Engineers.

In this issue you will note that con-
siderable care was given to the prepa-
ration of copy by those co-operating
in the movement, which in itself gives
evidence of the appreciation of such a
'Directory."

66

We bespeak your co-operation in this
valuable work and request that you
act promptly in mailing reservation for
space in the 1928 edition. Address
communications to the Secretary, 315
Commercial Bldg., St. Louis, Mo.

AMERICAN SOCIETY FOR MUNICIPAL IMPROVEMENTS

Consulting Engineers

Sewerage, Sewage Disposal, Water Supply, Water Purification, Electric Lighting, Power Plants, Valuations, Special Investigations and Reports. E. B. Black, N. T. Veach, Jr., A. P. Learned, J. F. Brown, E. H. Dunmire, C. I. Dodd, F. M Veatch.

Kansas City, Mo., Mutual Building.

Los Angeles, Calif., 308 S. Hill St.
New York City, N. Y., 36 West 44th St.

STILLMAN & VAN SICLEN

CHEM. LAB. CO. Inc.

Chemists and Chemical Engineers

227 FRONT STREET
NEW YORK

ROADS and PAVEMENTS

Analyses and Tests of Asphalt Paving Materials, Bitumens, Road Oils,
Cement and Concrete. Plant and Street Inspection Service Furnished.
Specifications Drafted and Improved. Full Equipment for Making Stand-
ard Core Borings. Experts in Investigations and Litigations.
Samples Examined for Compliance with Specifications.

Bidders'

S. W. Hume, Pres.

A. Prescott Folwell, Editor
W. A. Hardenbergh, Associate Editor

J. T. Morris, Treas.

PUBLIC WORKS

243 West 39th Street, New York

An Engineering and Construction Journal Devoted Exclusively to Public Improvements

AIR-LOCK APPARATUS

For Sewers and Sewage Disposal

Catalog No. 21-Pneumatic Sewage Ejectors.

Catalog No. 22-Flush Tank Siphons, Water Regulators.

Catalog No. 23-Automatic Siphons for Large Municipal Disposal Plants, etc.

Catalog No. 24-Automatic Controls for Operating Sand Filters
and Contact Beds.

Catalog No. 25-Automatic Siphons for Domestic Septic Tanks.
Catalog No. 27-Imhoff Tanks.

Catalog No. 28A-Wood Trash and Sewage Pumps.
Catalog No. 29-Sewer Pipe Joint Compound.

Catalog No. 24B-Marlo Mud Hog.

PACIFIC FLUSH-TANK COMPANY
Catalogues Mailed on Request

Singer Building, New York

4241 Ravenswood Ave., Chicago

SALT GLAZED VITRIFIED CLAY SEWER PIPE THE OLD RELIABLE MATERIAL

STANDING THE TEST OF TIME ON ALL SEWER WORK VITRIFIED CLAY SEWER PIPE is not the kind of sewer pipe

that needs taking up and repairing inside of a few years.

IT PROTECTS ITSELF against disintegration, deterioration; its hard, smooth glazed surface defies the infiltration or seepage substances. The "slippery finish" leaves no "toehold" for the stuff that builds up and clogs ordinary sewers.

For Full Particulars Write

EASTERN CLAY PRODUCTS ASSOCIATION

HENRY T. SHELLEY, Sec.-Mgr.

Telephone Spruce 5029

CINCINNATI QUARRIES CO.

306-7-8-9 Carew Bldg. Phones: Main 5066, 5067 CINCINNATI, OHIO

This Is Your Ticket for a Free Tour of Over 20 Snow Loading Layouts

Here's a chance to make a free inspection tour of over 20 progressive snow handling jobs without going outside of your Barber-Greene men have gathered information, pictures and layouts on interesting features of snow removal work in every section of the country. The best of these have been collected in the 1927 edition of MECHANICAL SNOW HANDLING. Sending this ticket brings your copy-send it today. No obligation.