Abstract
Mechanisms of Osmoregulation in Animals, Maintenance of cell volume, edited by R. Gilles, John Wiley & Sons Ltd., New York, Chichester, Brisbane and Toronto. 667 pp. £30.00
Fresh‐Water Invertebrates of the United States, by R. W. Pennak. John Wiley & Sons Ltd., New York, Chichester, Brisbane, Toronto, 1978. 803 pp. £19.50
Ethological Dictionary, by Armin Heymer. In German, English and French. Paul Parey, 1977
The Biology of Crabs, by G. F. Warner. Paul Elek Ltd., 1977. £6.95