A Practical Manual On Sea Water Distillation
With A Description Of The Necessary Machinery For The Process

TEXT-BOOK. OK PHYSICS. 49- In Five Volumes. Large 8vo. Sold Separately. A TEXT-BOOK OF PHYSICS. By J. H. POYNTING, Sc.D., F.R.S., Professor of Physics, Birmingham University, And Sir J. J. THOMSON, M.A., F.R.S., Professor of Experimental Physics in the University of Cambridge. Introductory Volume. Fifth Edition, Revised. Fully Illustrated. 10s. 6d. PROPERTIES OF MATTER. Contents. — Gravitation. — The Acceleration of Gravity. — Elasticity.— Stresses and Strains.—Torsion.—Bending of Hods.—Spiral Springs — Collision.— Compressibility of Liquida.—Pressures and Volurtvs of Gases.-Tbernial Effects Accomp nying Strain.— Capillarity.—Sunace Tension.—Laplace’s Theory of Capil.arity.—diffusion of Liquids — Diffusion of Gases.—Viscosity of Liquids.—Index. "We regard thia book as quite indispensable not merely to teachers but to physicists of every grade above the lowest.’’— University Correspondent. Volume II. Fifth Edition. Fully Illustrated. Price 8s. 6d. SOUND. Contents.—The Nature of Sound and its chief Characteristics.—The Telocity of Sound tn Air and other Media,—Refl c ion and Refraction of Sound.—Frequency and Pitch of Notes. Resonance and Forced Oscillations.— Analysis of Vibrations.—The Transverse Vibrations of Stretched Strings or Wires - Pipes and other Air Cavities.—Rods.—Plates. —Membranes.—Vibrations maintained by Heat,—Sensitive Flames and Jets.—Musical Sand.—The Superposition of Waves,- Indkx. “ The work . . . may be recommended to anyone desirous of possessing an east cp-to-datb Standard Treatise on Acoustics.”—Literature. Volume III. Third Edition, Revised. Fully Illustrated. Price 15s. HEAT. Contents.—Temperature. —Expansion of Solids —Liquids. — Gases. — Circulation and Convection.—Quantity of Heat; Specific Heat.—Conductivity.—Forms of Energy; Conservation ; Mechanical Equivalent of Heat.—The Kinetic Theory —Change of State; Liqai I, Vapour.—Critical Points—Solids and Liquids.—Atmospheric Conditions.— Rauiation —Theory of Exchanges.—Radiation and Temperature.—Thermodynamics.— Isothermal and Adiabatic Changes.—Thermodynamics of Changes of State, and Solu- tions.—Thermodynamics of Radiation.—Index. “ Well up-to-date, and extremely clear and exact throughout. ... As clear as it would be possible to make such a text-book Nature. Remaining Volumes in Preparation— LIGHT; MAGNETISM AND ELECTRICITY. LONDON: CHARLES GRIFFIN Æ CO., LIMITED, EXETER STREET, STRAND.