NOTES ON LEAD ORES: Their Distribution and Properties. By Jas. Fairie, F.G.S. Crown 8vo. 64 pages. Price 2s. 6d. net. (Post free, 2s. 9d. home; 3s. abroad.)
Industrial Hygiene.
THE 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.
DRYING BY MEANS OF AIR AND STEAM. Explanations, Formulæ, 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].")