for we geologists who have not taken bio in MANY years, could someone please summarize (2-3 lines) what is a jacobsen's organ and what it does. thx b ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Bonnie Blackwell, bonn@qcvaxa.acc.qc.edu Dept of Geology, (718) 997-3332 Queens College, City University of New York, fax: 997-3349 Flushing, NY 11367-1597