Linda, Funny thing, it was my email that was acting up. What else? You too, have a nice weekend. Elio ****************** Moselio Schaechter (home) 6345 Rockhurst Drive San Diego CA 92120 phone 619-583-7752 (office) Dept. of Biology San Diego State Univ. San Diego CA 92182 FAX 619-594-5676 ****************