RISKS AND DANGERS TO HEALTH OF VARIOUS OCCUPATIONS AND THEIR
PREVENTION.# By Leonard A. PARRY, M.D., B.Sc. (Lond.). 196 pp. Demy
8vo. Price 7s. 6d. net. (Post free, 7s. 10d. home; 8s. abroad.)

#Contents.#

Occupations which are Accompanied by the Generation and Scattering of
Abnormal Quantities of Dust -- Trades in which there is Danger of
Metallic Poisoning -- Certain Chemical Trades -- Some Miscellaneous
Occupations --Trades in which Various Poisonous Vapours are Inhaled
--General Hygienic Considerations -- Index.

#INDUSTRIAL USES OF AIR, STEAM AND WATER.# (p. c12)

#DRYING BY MEANS OF AIR AND STEAM.# Explanations, Formulae, and Tables
for Use in Practice. Translated from the German of E. HAUSRRAND. Two
folding Diagrams and Thirteen Tables. Crown 8vo. 72 pp. Price 5s. net.
(Post free, 5s. 3d. home; 5s. 6d. abroad.)

#Contents.#

British and Metric Systems Compared -- Centigrade and Fahr.
Thermometers -- Estimation of the Maximum Weight of Saturated Aqueous
Vapour which can be contained in 1 kilo. of Air at Different Pressure
and Temperatures -- Calculation of the Necessary Weight and Volume of
Air, and of the Least Expenditure of Heat, per Drying Apparatus with
Heated Air, at the Atmospheric Pressure: _A_, With the Assumption that
the Air is _Completely Saturated_ with Vapour both before Entry and
after Exit from the Apparatus -- _B_, When the Atmospheric Air is
Completely Saturated _before entry_, but at its _exit_ is _only_ 3/4,
1/2 or 1/4 Saturated -- _C_, When the Atmospheric Air is _not_
Saturated with Moisture before Entering the Drying Apparatus -- Drying
Apparatus, in which, in the Drying Chamber, a Pressure is Artificially
Created, Higher or Lower than that of the Atmosphere -- Drying by
Means of Superheated Steam, without Air --Heating Surface, Velocity of
the Air Current, Dimensions of the Drying Room, Surface of the Drying
Material, Losses of Heat -- Index.

(_See also "Evaporating, Condensing and Cooling
Apparatus," p. 26._)

#PURE AIR, OZONE AND WATER.# A Practical Treatise of their Utilisation
and Value in Oil, Grease, Soap, Paint, Glue and other Industries, By
W. B. COWELL. Twelve Illustrations. Crown 8vo. 85 pp. Price 5s. net.
(Post free, 5s. 3d. home; 5s. 6d. abroad.)

#Contents.#

Atmospheric Air; Lifting of Liquids; Suction Process; Preparing Blown
Oils; Preparing Siccative Drying Oils -- Compressed Air