1. Smith-Kettlewell Institute of Visual Sciences, 2232 Webster St., San Francisco, Calif. 94115. Send reprint requests to Dr. Baker
2. School of Optometry, Univ. of California, Berkeley, Calif. 94720
3. Langley Porter Psychiatric Institute, Univ. of California Medical Center, 401 Parnassus Street, San Francisco, Calif. 94122