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Eugene Dietzgen Co.

162-166 W. Monroe St.

CHICAGO

Engineering and Surveying Instruments

Drawing Materials
Measuring Tapes

Send for 10th Edition Catalog

ENGINEERING

and CONTRACTING

HALBERT P. GILLETTE, Editor

THE FOUR ROTATED SPECIAL MONTHLY ISSUES and the 4 special quarterly issues of E. & C. (52 in all), entirely cover the civil engineering and contracting field if subscribed for as a weekly at $4.00 a year; but any one of the four special monthly issues may be subscribed for as a monthly at $1.25 a year (or any two monthly issues at $2.00 a year) and the four special quarterly issues will be sent without extra charge. These special quarterly issues relate entirely to foreign engineering and construction practice, The articles in the first two issues of each month (first and second Wednesdays) completely cover the municipal engineering and contracting field. The articles in the first and last issues of each month (first and fourth Wednesdays) completely cover county engineering and highway engineering and contracting. The articles in the third and last issues of each month (third and fourth Wednesdays) completely cover steam and electric railway location, design and construction.

Address
610 South Dearborn Street, Chicago, Illinois

SOLVAY

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CALCIUM CHLORIDE

Cuts Road Maintenance Expense Solvay Calcium Chloride is a clean white chemical salt. It dissolves readily when exposed to air. It is odorless, colorless, and without effect on rubber. Easily applied. When applied to a road it soon becomes incorporated with the top course and absorbs sufficient moisture from the air to lay the dust and keep the surface smooth and compact. Saving the surface saves the entire road-bed.

EVANS & WING, Inc.
624 Book Bldg., Detroit

Sales Agents for
THE SOLVAY PROCESS CO.

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Prompt Attention Given to Belt Repairing Prompt Service

CITZ. PHONE 4518 TRY US OUT! Reliable Material

818

BELL MAIN

OFFICE AND FACTORY: 1-3 Ionia Ave. S. W.

Sarco Expansion Joints

HIGHLY APPROVED BY

ALL ENGINEERS
A. B. KNOWLSON CO.

Distributors
203-207 Powers Theater Building

GRAND RAPIDS, MICH.

PERRY TESTING LABORATORY Cherry 5375

Foot of Third Street Detroit, Michigan

M. C. R. R. Dock CHEMISTS AND TESTING ENGINEERS Specialists on CEMENT TESTING, MUNICIPAL and HIGHWAY

materials of construction Department for the CHEMICAL and BACTERIOLOGICAL examina

tion of WATER Equipped for general CHEMICAL ANALYSIS and PHYSICAL

TESTS
Olsen Universal Testing Machine, 300,000 pounds capacity

Geological Survey of Michigan

A catalog of State Survey reports, publications, and maps with a list of publications of the V. S. Geological Survey relating to Michigan will he sent upon request. Attention is called to recent publications as follows:

Publication 26, Agaricaceae (Fleshy Fungi, of Michigan.
Publication 28, Drainage in Michigan.

Publication 29, Mineral Resources of Michigan for 1918.
Orders for Topographic Sheets (Joint Survey) and inquiries as to what sheets are
published will receive prompt attention.
R. A. SMITH, State Geologist LANSING, MICHIGAN

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The Toledo Bridge & Crane Company

Designers and Builders of STEEL BRIDGES AND BUILDINGS AND ELECTRIC TRAVELING CRANES

Toledo, Ohio

STRUCTURAL STEEL WORK

OF EVERY DESCRIPTION-DESIGNED, FABRICATED

AND ERECTED BY

The Whitehead & Kales Iron Works

DETROIT, MICHIGAN

2,500 TONS OF SHAPES AND PLATES IN STOCK

TWENTY-SEVENTH YEAR

The ENGINEERING AGENCY

(INCORPORATED)

ALBERT G. FROST, President
Monadnock Block

::
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CHICAGO
The Oldest and Largest Employment Agency

devoted to ENGINEERING

CONTRACTING MANUFACTURING
ARCHITECTURE

CHEMISTRY
TEACHING
MINING

SALES

RUSSEL WHEEL & FOUNDRY CO.

FOUNDRY, MACHINE

and STRUCTURAL SHOPS

Jos. Campau Ave. and Belt Line R. R. DETROIT

MICH.

GARDNER S. WILLIAMS

M. Am. Soc. C. E.

M. Am. Inst. Cons. Eng.
CONSULTING ENGINEER

Hydraulics; Water Power and Electrical Developments; Water Supply
and Purification; Surveys, Reports, Plans, Specifications, Appraisals,
Valuations; Superintendence of Construction.

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Edward E. Johnson, Inc.

St. Paul, Minn.

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