Medical Progress in the Last Hundred Years.

Medical Progress in the Last Hundred Years: DR. Anesthetic Effects of Some N-aryl Barbituric Acids M. G. SEELIG .................... .................... 275 Containing Dye-forming Groups: DRS. AXEL M. ScientificEvents: IHJORT, DR. DAVID W. FASSETT and EDWIN J. Scientific Events: DEBEER. Diffraction of X-rays by Built-up Films The Institute of Neuropsychiatry of the University of Proteins: PROFESSOR G. L. CLARK and SYDNEY of Michigan;Begional Directors of the National Ross ..2................90.............. 290 Park System; Lectures at the Field Museum of Natural History; The Rochester Meeting of the Scientific Apparatus and Laboratory Methods: National Academy of Sciences; Celebration of the A Tubular Vacuum Type Centrifuge: DR. J. W. IHundredth Anniversary of the Birth of Charles BEAMS, F. W. LINKE and C. SKARSTROM.293 Frederick Chandler. Recent Deaths ............................... 279 Science News. 8 Scientific Notes and News .......... ..................... 282