RT Journal Article SR Electronic T1 THE SIBLEY COLLEGE EXTENSION, CORNELL UNIVERSITY JF Science JO Science FD American Association for the Advancement of Science SP 158 OP 161 DO 10.1126/science.ns-10.243.158 VO ns-10 IS 243 YR 1887 UL http://science.sciencemag.org/content/ns-10/243/158.abstract AB