1. From the Miami Seaquarium, 4400 Rickenbacker Causeway, Miami, FL 33149 (Bossart, Eimstad, Caron, Trimm, Bradley), Veterinary Reference Laboratories, PO Box 660187, Dallas, TX 75266 (Bossart), and Department of Experimental Biology, Abbott Laboratories, North Chicago, lL 60064 (Brawner, Cabal, Kuhns).