With a New Chapter on Electric Lighting 8vo. Cloth 404 Illustrations 507 Pages NET $2.00 THIRTY-SECOND THOUSAND

LESSONS IN

PRACTICAL ELECTRICITY

PRINCIPLES, ARITHMETICAL PROBLEMS, EXPERIMENTS

AN ELEMENTARY TEXT BOOK
With Numerous Tables, Formulas, and
Two Large Instruction Plates.

By C. WALTON SWOOPE

Associate Member, American Institute of Electrical Engineers.
Late Instructor of Applied Electricity at the
Spring Garden Institute, Philadelphia.

CONTENTS

1.-Magnetism. 2.-Magnetisation. 3.-Magnetic Fields. 4.-Theory of Magnetism. 5.-Magnet Induction. 6.-Magnetic Circuits. 7.-Earth's Magnetism. 8.-Voltaic Electricity. 9-Batteries. 10.--Electrolysis. 11.-Measurement of Current Strength. 12.-Resistance. 13.-Ohm's Law and Battery Connections. 14.-Circuits and Their Resistance. 15.-Electro

18.

22.

24.

26.

magnetism. 16.-Galvanometers. 17.-Electromagnets.
Ammeters. 19. Electrical Work and Power. 20.-Meas-
urement of Pressure. 21. Measurement of Resistance.
Electrical Development of Heat. 23. Electrodynamics.
Electromagnetic Induction. 25.-The Induction Coil.
Dynamo Electric Machines. 27.-Armatures
Current Dynamos. 29. Direct Current Motors. 30.—Electric
Lighting. 31. Alternating Currents. Tables. Formulas.

28.- Direct

This book combines the principles of electricity upon which the practical applications of to-day depend, with the experimental demonstration of these principles and the elements of the arithmetic of electricity used in making practical electrical measurements and calculations.

D. VAN NOSTRAND COMPANY

Publishers and Booksellers

Cold Storage, Heating
and Ventilating on Board Ship

By S. F. WALKER
CONTENTS

COLD STORAGE. The Cold Storage Prob-
lem. Methods of Cooling the Cold Chambers.
Methods of Cooling the Air. Leading the
Cooled Air into the Cold Chambers. How the
Low Temperature of the Brine or Refrigerant
is Produced. The Condenser. Lubrication
and Stuffing Boxes of Compressors. Absorption
Machines. Circulating Pumps. How Refrig-
erating Apparatus is Measured. Power Required
for Refrigerating Apparatus. Cooling Water.
Form of Apparatus for Use on Board Ship.
Other Applications of Refrigeration on Board
Ship. Cooling Magazines and Officers' and
Men's Quarters. Faults. HEATING. Special
Requirements on Board Ship, Difficulties.
Methods of Heating Available. Hot Water,
Steam, Air, Combined Air and Steam Radiator.
The Thermotank System. The System Applied
to the S. S. Lusitania. Heating by Electricity.
Regulating Heat Delivered by Electric Heaters.
VENTILATING. Ventilation by Heating
and Cooling. Ventilation of Laboratories and
Cattle Spaces. Fans. Size and Power Re-
quired. Testing Air Current. Estimating
Heat Required. Apparatus Estimated to be
Required for Heating the Different Saloons,
State Cabins, etc. Cost of Furnishing Heat
Required.

D. VAN NOSTRAND COMPANY
Publishers and Booksellers

25 PARK PLACE

NEW YORK

312 Pages 5x6% 124 Illustrations NET $2.00

Handbook for the Care and Operation of

NAVAL MACHINERY

BY

Lieut. H. C. Dinger, U. S. N.

Being an Extended and Enlarged Form of a Series

of Articles Published in the "Journal of the

Amer. Society of Naval Engrs.

CONTENTS

Operation of Naval Machinery. Getting Underway.

Running Engines Underway. Accidents Underway.

Care and Overhaul of Main Plant. General Rules

for Overhauling Machinery. Cylinders. Valves and

Valve Gear. Engine Adjustments. Oiling Gear,

Friction and Lubrication. Condenser and Pumps.

Fittings and Auxiliaries. Joints and Packings. Stuff-

ing-Boxes. Lagging and Clothing. Feed and Filter

Tanks. Feed Water Heaters. Evaporators and

Distillers. Heating System. Steam Launches. Re-

frigerating Plant. Gauges and Thermometers. Rev-

olution Counters, Telegraphs and Revolution Indica-

tors. Piping. Valves and Cocks. Cleaning,

Painting, and Points in Doing Work. Care and

Subdivision of Hull. Special Auliliary Engines.

Steam Steering Gear, Air Compressors. Blowers

and Blower Engines.

Workshop Machinery.

Ash Hoists and Ejectors.

Spare Parts and Tests.

Spare Parts and Outfit of Accessories. Tests of

Machinery and Piping.

D. VAN NOSTRAND COMPANY

Publishers and Booksellers

25 PARK PLACE

NEW YORK

HIS is a complete list of all our technical, industrial, engineering and scientific publications and importations classified by subjects and carefully described.

We carry a complete stock of the
publications of all other publishers
and are especially well fitted to fill
your orders for books on marine and
naval engineering-All inquiries are
given prompt and careful attention

D. VAN NOSTRAND COMPANY

Publishers and Booksellers

25 Park Place

New York

141 Pages 5 x 74

Illustrated

Net $1.CO

Net $1.00

Marine Engineers' Drawing Book for
Board of Trade Examinations.

W. C. McGIBBON

124 x 934

Net $2.00

Indicator Diagrams for Marine Engineers.

W. C. McGIBBON

196 Pages 734 x 934 197 Illustrations

Net $3.00

Mechanical and Marine Engineering Science. A. N. SOMERSCALES 544 Pages

Fourth Edition

216 Illustrations

534 x 834

Net $5.00

Lessons in Mechanics for

Marine Engineers and Engineering Students.

"Verbal" Notes and Sketches

for Marine Engineers.

J. W. M. SOTHERN

Eighth Edition, Enlarged and Rewritten,
61⁄2 x 91⁄2 545 Illustrations

709 Pages

Elementary Mathematics
for Marine Engineers

Net $5.00

J W. M. SOTHERN and R. M. SOTHERN
54 x 734 Illustrated

180 Pages

Net $1.00

Marine Engineers B. of T. Examinations.

JOHN TOD and W. C. McGIBBON

390 Pages 54 x8 288 Illustrations 4 Plates Net $1.50

D. VAN NOSTRAND COMPANY

25 Park Place

New York