THE RELATIONSHIP BETWEEN BIOLOGY AND LANGUAGE IS EXPLORED IN THIS VOLUME. THE AUTHOR BELIEVES THAT "LANGUAGE IS THE MANIFESTATION OF SPECIES-SPECIFIC COGNITIVE PROPENSITIES. IT IS THE CONSEQUENCE OF THE BIOLOGICAL PECULIARITIES THAT MAKE A HUMAN TYPE OF COGNITION POSSIBLE." IN ATTEMPTING TO "REINSTATE THE CONCEPT OF THE BIOLOGICAL BASIS OF LANGUAGE CAPACITIES" THE AUTHOR FORMULATES SPECIFIC ASSUMPTIONS WHICH CAN BE SUBJECTED TO EMPIRICAL TESTS. CHAPTER TITLES ARE--(1) THE CONCEPTUAL FRAMEWORK, (2) MORPHOLOGICAL CORRELATES, (3) SOME PHYSIOLOGICAL CORRELATES, (4) LANGUAGE IN THE CONTEXT OF GROWTH AND MATURATION, (5) NEUROLOGICAL ASPECTS OF SPEECH AND LANGUAGE, (6) LANGUAGE IN THE LIGHT OF EVOLUTION AND GENETICS, (7) PRIMITIVE STAGES IN LANGUAGE DEVELOPMENT, (8) LANGUAGE AND COGNITION, AND (9) TOWARD A BIOLOGICAL THEORY OF LANGUAGE DEVELOPMENT. NOAM CHOMSKY IS THE AUTHOR OF APPENDIX A, "THE FORMAL NATURE OF LANGUAGE," AND O. MARX HAS WRITTEN APPENDIX B, "THE HISTORY OF THE BIOLOGICAL BASIS OF LANGUAGE." EXTENSIVE REFERENCES ARE LISTED AFTER EACH CHAPTER. THIS BOOK IS PUBLISHED BY JOHN WILEY AND SONS, INC., 605 THIRD AVENUE, N.Y., N.Y. 10016 ($14.95). (JD)