A Conspectus of Aphids as Vectors of Plant Viruses, by J. S. Kennedy, M. F. Day and V. F. Eastop. Commonwealth Institute of Entomology, 114 pp. Published June, 1962. The Eastern Press Ltd., London and Reading, paperbound. Price 25 shillings. - The Insect Factor in Wood Decay, by Norman E. Hickin. 336 pp., 263 figs. Hutchinson of London, England, 1963. Price 50 shillings.