uel.--V., Gaseous Fuel.--VI., Efficiency and Smoke Tests of
Boilers.--VII., Some Standard Smoke Trials.--VIII., The Legal Aspect of
the Smoke Question.--IX., The Best Means to be adopted for the
Prevention of Smoke.--Index.

* * * * *

=GAS AND COAL DUST FIRING.= A Critical Review of the Various Appliances
Patented in Germany for this purpose since 1885. By ALBERT PUeTSCH. 130
pp. Demy 8vo. 1901. Translated from the German. With 103 Illustrations.
Price 7s. 6d.; India and Colonies, 8s.; Other Countries, 8s. 6d.;
strictly net.

=Contents.=

Generators--Generators Employing Steam--Stirring and Feed Regulating
Appliances--Direct Generators--Burners--Regenerators and
Recuperators--Glass Smelting Furnaces--Metallurgical Furnaces--Pottery
Furnace--Coal Dust Firing.--Index.

=Press Opinions.=

"The work is worthy of perusal by all consumers of fuel. It is
exceedingly well printed and illustrated."--_Chemical Trade
Journal._

"The book will appeal with force to the manufacturer as well as to
the technical student, whilst it is also of far more than average
interest to the general reader."--_Halifax Guardian._

"The importance that gas and coal dust firing have attained of
recent years, and especially the great interest attaching of late to
the question of coal dust firing, makes the appearance of the
present volume most opportune."--_Iron and Coal Trades Review._

"The German author has long followed the development of various
systems of gas firing, and in the present treatise he discusses the
merits of appliances patented since 1885. His text and the numerous
illustrations indispensable to it will be found useful by all who
are engaged in practical work in the same field."--_North British
Daily Mail._

* * * * *

=Books on Plumbing, Decorating, Metal Work, etc., etc.=

* * * * *

=EXTERNAL PLUMBING WORK.= A Treatise on Lead Work for Roofs. By JOHN W.
HART, R.P.C. 180 Illustrations. 270 pp. Demy 8vo. 1896. Price 7s. 6d.;
India and Colonies, 8s.; Other Countries, 8s. 6d.; strictly net.

=Contents.=

Chapters I., Cast Sheet Lead.--II., Milled Sheet Lead.--III., Roof
Cesspools.--IV., Socket Pipes.--V., Drips.--VI., Gutters.--VII., Gutters
(continued).--VIII., Breaks.--IX., Circular Breaks.--X., Flats--XL,
Flats (continued).--XII., Rolls on Flats.--XIII.