using changes in resistance within the electric field with which it surrounded itself to detect changes in its surroundings, and was using the information to trigger appropriate behavioural responses. Personal Lissmann married Corinne Ceresole Foster-Barham at Cambridge in 1949. Their son Martin, an amateur flautist, became a physician in Essex. Works "Die Umwelt des Kampffisches (Betta splendens Regan)", in: Zeitschrift für vergleichende Physiologie, 18:1 (1932) pp 65–111. "Körperhaltung und Bewegungsform eines Myriopoden im Zusammenhang mit seiner Autotomie", in: Zeitschrift für vergleichende Physiologie 21 (1935), pp. 751–766. "Continuous Electrical Signals from the Tail of a Fish, Gymnarchus Niloticus Cuv", in: Nature, 167, 4240 (1951), pp. 201–202. "The Mechanism of Object Location in Gymnarchus Niloticus and Similar Fish", in: Journal of Experimental Biology, 35 (1958), pp. 451–486. (with Ken E. Machin) "The Mode of Operation of the Electric Receptors in Gymnarchus Niloticus", in: Journal of Experimental Biology 37:4 (1960), pp. 801–811. (with Ken E. Machin) "Electric Location by Fishes", in: Scientific American, 208, pp 50–59, March 1963. "James Gray. 14 October 1891-14 December 1975", in: Biographical Memoirs of Fellows of the Royal Society, 24 (1978), pp. 54–70. References 1909 births 1995 deaths 20th-century British zoologists Fellows of the Royal Society British Jews Jewish scientists 20th-century German zoologists