Coal Dust Firing -- Index.

#THE HARDENING AND TEMPERING OF STEEL IN THEORY AND PRACTICE.# By
Fridolin REISER.

Translated from the German of the Third Edition. Crown 8vo. 120 pp.
Price 5s. net. (Post free, 5s. 3d. home; 5s. 4d. abroad.)

#Contents#.

#Steel -- Chemical and Physical Properties of Steel, and their Casual
Connection -- Classification of Steel according to Use -- Testing the
Quality of Steel -- Steel-Hardening -- Investigation of the Causes of
Failure in Hardening -- Regeneration of Steel Spoilt in the Furnace --
Welding Steel -- Index.#

#SIDEROLOGY: THE SCIENCE OF IRON# (The Constitution of Iron Alloys and
Slags). Translated from German of Hanns Freiherr v. JUePTNER. 350 pp.
Demy 8vo. Eleven Plates and Ten Illustrations. Price 10s. 6d. net.
(Post free, 11s. home; 11s. 6d. abroad.)

#Contents.#

#The Theory of Solution.# -- Solutions -- Molten Alloys -- Varieties of
Solutions -- Osmotic Pressure -- Relation between Osmotic Pressure and
other Properties of Solutions -- Osmotic Pressure and Molecular Weight
of the Dissolved Substance -- Solutions of Gases -- Solid Solutions --
Solubility -- Diffusion -- Electrical Conductivity -- Constitution of
Electrolytes and Metals -- Thermal Expansion. #Micrography.# --
Microstructure -- The Micrographic Constituents of Iron -- Relation
between Micrographical Composition, Carbon-Content, and Thermal
Treatment of Iron Alloys -- The Microstructure of Slags. #Chemical
Composition of the Alloys of Iron.# -- Constituents of Iron Alloys --
Carbon -- Constituents of the Iron Alloys, Carbon -- Opinions and
Researches on Combined Carbon -- Applying the Curves of Solution
deduced from the Curves of Recalescence to the Determination of the
Chemical Composition of the Carbon present in Iron Alloys -- The
Constituents of Iron -- Iron -- The Constituents of Iron Alloys --
Manganese -- Remaining Constituents of Iron Alloys -- A Silicon --
Gases. #The Chemical Composition of Slag.# -- Silicate Slags --
Calculating the Composition of Silicate Slags -- Phosphate Slags --
Oxide Slags -- Appendix -- Index.

#EVAPORATING, CONDENSING AND COOLING APPARATUS.# Explanations, Formulae
and Tables for Use in Practice. By E. HAUSBRAND, Engineer. Translated
by A. C. WRIGHT, M.A. (Oxon.), B.Sc. (Lond.). With Twenty-one
Illustrations and Seventy-six Tables. 400 pp. Demy 8vo. Price 10s. 6d.
net. (Post free, 11s. home; 11s. 6d. abroad.)

#Contents.#