Medical Bibliophiles and book reviewers, like their kin in other fields, are always interested in the difference between two editions of a book. Rearrangements, deletions, modifications, and expansions of one or more sections are the usual methods of change when a textbook is extensively revised or rewritten and requires a new edition. When the two-volume first edition of Peripheral Neuropathy first appeared in 1975, neurologists, neuropathologists, and others interested in peripheral nerve disease, including many internists, were impressed at the scope, organization, and wealth of practical and theoretical detail. Can so much more material be written, rearranged, expanded, and modified