CHAPTER V.--Valve Setting continued, with diagrams of same; Table for

laps of Steam Valve. CHAPTER VI.--Valve Setting continued. CHAPTER VII.--Lubrication with diagrams for same. CHAPTER VIII.--Discussion of the Air Pump and its Management. CHAPTER IX.--Care of Main Driving Gears; best Lubricator for same. CHAPTER X.--Heating of Mills by Exhaust Steam. CHAPTER XI.--Engine Foundations; diagrams and templets for same. CHAPTER XII.--Foundations continued; Materials for same, etc.

Third Edition, with an Appendix.

THE SLIDE VALVE SIMPLY EXPLAINED

BY W. J. TENNANT, ASSO. M.I.M.E.

REVISED AND MUCH ENLARGED

BY J. H. KINEALY, D.E.

CONTENTS OF CHAPTERS:

I. The Simple Slide.

II. The Eccentric a Crank. Special Model to Give Quantitative Results.

III. Advance of the Eccentric.

IV. Dead Centre. Order of Cranks. Cushioning and Lead.

V. Expansion--Inside and Outside Lap and Lead; Advance Affected Thereby. Compression.

VI. Double-Ported and Piston Valves.

VII. The Effect of Alterations to Valve and Eccentric.

VIII. Note on Link Motions.

IX. Note on Very Early Cut-Off, and on Reversing Gears in General.

_88 Pages._ _41 Illustrations._ _12mo, Cloth, $1.00._

QUICK AND EASY METHODS OF CALCULATING WITH THE SLIDE RULE

A SIMPLE EXPLANATION OF THE THEORY AND USE OF THE SLIDE RULE, LOGARITHMS, ETC.

_With numerous examples worked out._

BY R. G. BLAINE, M.E.

A most reliable, practical and valuable work for the engineer.

_144 Pages._ _Illustrated._ _12mo, Cloth, $1.00_

THEORETICAL AND PRACTICAL Ammonia Refrigeration

_A Work of Reference for Engineers and others Employed in the Management of Ice and Refrigeration Machinery._

By ILTYD I. REDWOOD

CONTENTS

B. T. U. Mechanical Equivalent of a Unit of Heat. Specific Heat. Latent Heat. Theory of Refrigeration. Freezing, by Compressed Air. Ammonia. Characteristics of Ammonia. The Compressor. Stuffing-Boxes. Lubrication. Suction and Discharge Valves. Separator. Condenser-Worm, Receiver. Refrigerator or Brine Tank. Size of Pipe and Area of Cooling Surface. Charging the Plant with Ammonia. Jacket-Water, for Compressor, for Separator. Quantity of Condensing Water Necessary. Loss due to Heating of Condensed Ammonia. Cause of Variation in Excess Pressure. Use of Condensing Pressure in Determining Loss of Ammonia by Leakage. Cooling Directly by Ammonia. Freezing Point of Brine. Making Brine. Specific Heat of Brine. Regulation of Brine Temperature. Indirect Effect of Condensing Water on Brine Temperature. Directions for Determining Refrigerating Efficiency. Equivalent of a Ton of Ice. Compressor Measurement of Ammonia Circulated. Loss of Well-Jacketed Compressors. Loss in Double-Acting Compressors. Distribution of Mercury Wells. Examination of Working Parts. Indicator Diagrams. Ammonia Figures--Effectual Displacement. Volume of Gas. Ammonia Circulated per Twenty-Four Hours. Refrigerating Efficiency. Brine Figures--Gallons Circulated. Pounds Circulated. Degrees Cooled. Total Degrees Extracted. Loss due to Heating of Ammonia Gas. Loss due to Heating of Liquid Ammonia. Calculation of the Maximum Capacity of a Machine. Preparation of Anhydrous Ammonia. Construction of Apparatus, etc., etc.

150 pages, 15 illustrations, cloth, $1.00.

SPONS’ $2.50 MECHANIC’S OWN BOOK, A PRACTICAL MANUAL.

PRINCIPAL CONTENTS.

Mechanical Drawing. (13 pages).

Casting and Founding. (31 pages).

Forging and Finishing. (56 pages.)

Soldering. (26 pages).

Sheet-Metal Working. (10 pages).

Carpentry, Woods, Tools, etc. (224 pages).

Cabinet Making. (36 pages).

Carving and Fretwork. (13 pages).

Upholstery. (6 pages).

Painting, Graining and Marbling. (28 pages).

Staining, and Gilding. (16 pages).

Polishing, Varnishing. (26 pages).

Mechanical Movements. (56 pages).

Turning and Lathe work. (30 pages).

Masonry, Stonework, Brickwork, Concrete, etc. (45 pages).

Plastering, Whitewashing, Paperhanging. (13 pages)

Roofing, Glazing. (14 pages).

Bell hanging, Gas fitting. (8 pages).

Lighting, Ventilation, Warming. (21 pages).

Foundations, Roads and Bridges, Banks, Hedges, Ditches and Drains, Water Supply and Sanitation. House Construction, etc. Size of book 6-3/4 in. by 8-3/4.

702 pages, half extra gilt and 1420 illustrations.

End of Project Gutenberg's Electric Gas Lighting, by Norman H. Schneider