ABSTRACT
The following description of evolution concen trates on an approach that most connects with comparative psychology, and it therefore differs from standard accounts, which readers may wish to consult for a more general picture. The entry in the Encyclopaedia Britannica written by Sewall Wright (1948) is especially commend able. It is thought-provoking, balanced, and comprehensive, running well over 12 pages of closely printed text. The present account is much more limited in scope, and is mainly con cerned with bringing out those areas of conver gence between contemporary evolutionary theories and comparative psychology that may be fruitfully explored in the future.
