ANIMAL BEHAVIOR — WELLS 429 



Otheb Wobms 



G. P. Wells and R. P. Dales, Journ. Mar. Biol. Assoc. U. K., vol. 29, p. 661, 1951. 

 G. P. Wells, Proc. Roy. Soc, B, vol. 138, p. 278, 1951 ; vol. 140, p. 70, 1952. 



I am by no means expert on the other groups mentioned. The fol- 

 lowing references are to works that I happen to have encountered and 

 enjoyed. I have deliberately avoided the complicated question of 

 inherent rhythms synchronized with the tidal, diurnal, lunar, or 

 annual cycles, on which there is an enormous literature. 



Birds 



B. M. Nicholson, Songs of wild birds (1936), with a chapter by Ludwig Koch. 



This was published with a "learner's set" of gramophone records. There 



have been subsequent issues of bird-song records ; in my opinion, the first 



is still the best because of the excellence of the book. 

 Niko Tinbergen, The herring gull's world (1953). 

 A. B. Armstrong, The wren (1955). 

 Konrad Lorenz, Er Redete mit dem Vieh, den Voegeln und den Fischen (1949). 



Translated as King Solomon's Ring (1952). Jackdaws in both versions; 



geese in the German only. 

 Song-learning in chaffinches: W. H. Thorpe, Nature (London), vol. 173, p. 



465, 1954. 

 Whitethroats : F. Sauer, Zeitschr. Tierpsychol., vol. 11, p. 10, 1954. 

 Great tits : R. A. Hinde, Behaviour, Suppl. No. 2, 1952 ; vol. 5, p. 191, 1953. 

 Domestic fowl : N. E. Collias, Auk, vol. 69, p. 127, 1952. N. E. Collias and M. 



Joos, Behaviour, vol. 5, p. 175, 1953. 

 Otheb Animals 



Sea anemones: E. J. Batham and C. F. A. Pantin, Journ. Exp. Biol., vol. 27, 



p. 290, 1950. C. F. A. Pantin, Symp. Soc. Exp. Biol., vol. 4, p. 175, 1950. 

 Sea squirts: Graham Hoyle, Journ. Mar. Biol. Assoc. U. K., vol. 31, p. 541, 



1953. 

 Fresh-water mussels : G. E. Barnes, Journ. Exp. Biol., vol. 32, p. 158, 1955. 

 Cicadas : J. W. S. Pringle, Journ. Exp. Biol., vol. 31, p. 525, 1954. 

 Newts : H. Spurway and J. B. S. Haldane, Behaviour, vol. 6, p. 8, 1953. 

 Mammals (including medical students); also pigeons: Curt Richter, Quart. 



Rev. Biol., vol. 2, p. 307, 1927. 

 General 



Review of biological rhythms: Nathaniel Kleitman, Physiol. Rev., vol. 29, 



No. 1, 1949. 

 The fourth volume in the series Symposia of the Society for Experimental 



Biology (1950) is an interesting and still useful collection of different ap- 

 proaches to the mechanisms of animal behavior. 



