Evolution of brain and behaviour in vertebrates: By R.B. Masterton, C.B.G. Campbell, M. E. Bitterman and N. Hotton (eds.), xii + 482 pages, 98 illustrations, 11 tables, Lawrence Erlbaum, publishers, Hilldale, NJ, distributed by the Halstead Press Division of John Wiley and Sons, New York, Toronto, London, Sydney, 1976, £ 22.45, US$ 35.00