c LIBERTY TEES BLOCK, m: a y, 1 e 6 1 . H THE LIBRARY OF THE UNIVERSITY OF CALIFORNIA PRESENTED BY PROF. CHARLES A. KOFOID AND MRS. PRUDENCE W. KOFOID LETTERS A YOUNG PHYSICIAN JUST ENTERING UPON PRACTICE. PROFESSOR EMERITUS OF THE THEORY AND PRACTICE OP PHYSIO IN THE UNI VKR3ITY AT CAMBRIDGE J LATE PHYSICIAN IN THE MASSACHUSETTS GENERAL HOSPITAL ; HONORARY MEMBER OF THE MEDICO-CHIRURGICAL SOCIETY OF LONDON ; CORRESPONDING MEMBER OF THE ACADEMY OF MEDICINE AT PARIS, &c. &c. &0 ■ jrrnt) mtsiuon. BOSTON: TICKNOR AND FIELDS.. 1861.