RESEARCH STUDIES RELEVANT TO SOME ASPECT OF VISUAL IMPAIRMENT ARE CONTAINED IN THE BULLETIN. D.M. BAUMANN AND OTHERS REPORT ON THE COLLAPSIBLE CAN, AND T.L. DEFAZIO AND T.B. SHERIDAN ANALYZE THE VIBRATIONS OF THE CANE. J.J. GIBSON CONSIDERS SENSITIVITY, AND J. MICKUNAS, JR., AND T.B. SHERIDAN DISCUSS THE OBSTACLE COURSE IN MOBILITY EVALUATION OF THE BLIND. ALSO INCLUDED ARE THE FOLLOWING--(1) I.F. LUKOFF AND M. WHITEMAN ON INTERVENING VARIABLES AND ADJUSTMENT, (2) H. GOLDSTEIN ON THE NEED FOR SENSORY DEVICES MARKET RESEARCH, (3) J.R. HOCHSTIM ON THREE INFORMATION GATHERING STRATEGIES WITH SOCIOMEDICAL VARIABLES, (4) F.S. COOPER ON READING MACHINES, (5) M.M. GERMANOV ON APPARATUS FOR READING BY THE BLIND OF ORDINARY TYPOGRAPHIC TEXTS, (6) O.G. SELFRIDGE ON VISUAL PATTERN RECOGNITION, AND (7) F.A. WEBSTER ON ACOUSTICAL CONTROL OF AIRBORNE INTERCEPTION BY BATS. FIVE MEN OFFER SHORT DISCUSSIONS ON THE DEFINITION OF BLINDESS--I.P. SCHLOSS, R.E. HOOVER, A.E. BRALEY, J.W. JONES, AND MD. GRAHAM. ALSO INCLUDED ARE THE REPORT OF THE WORKSHOP ON CLASSIFICATION OF CAUSES OF BLINDNESS AND EXCERPTS FROM THE PROCEEDINGS OF THE WORKSHOP ON NOMENCLATURE OF COMMUNICATIVE DISORDERS. THE ARTICLES PROVIDE THEIR OWN REFERENCE LISTS, FIGURES AND TABLES. THIS DOCUMENT IS AVAILABLE FROM THE AMERICAN FOUNDATION FOR THE BLIND, 15 WEST 16TH STREET, NEW YORK, NEW YORK 10011, FOR $2.50. (JD)