vesicles, and possibly at other transport steps. Recent progress has provided insights into molecular interactions that govern clathrin coat dynamics. Now, ter Haar Babak Pishvaee and Gregory S. Payne Department of Biological Chemistry UCLA School of Medicine Los Angeles, California 90095 et al. (1998) report in this issue of Cell the crystal structure of the clathrin heavy chain amino-terminal...

THE AUTHORSHIP OF DOMESTIC MEDICINE MEDICAL WORKS for the layman in the eighteenth century reflect the diversity of the contemporary medical doctrines which they implicitly transmitted to the public. These books did however distort the teachings of the schools in a variety of ways: by their use of the vernacular and less technical language; their practical emphasis; through the ingenuity or oth...

Categorization and analogical reasoning are two important cognitive processes, for which there exist formal counterparts (at least they may be regarded as such): namely, formal concept analysis on the one hand, and analogical proportions (modeled in propositional logic) on the other hand. This is a first attempt aiming at relating these two settings. The paper presents an algorithm that takes a...