"The power and the beauty of science do not rest upon infallibility, which it has not, but on corrigibility, without which it is nothing."—HOWARD E. GRUBER* Letters submitted for possible publication must be identified as such, with permission to publish appended as a postscript. Text length must not exceed 400 words. No more than five references may be used; reference format must be that specified in "Infor-mation for Authors' * (page 1-6). All portions of letters must be typed double-spaced, including references. Tables and figures will not be published. Acceptance of letters for publication de-pends on several factors: newness of information, relevance to current topics and recent content of this journal, clarity of s...