CONTRIBUTORS. 



HENRY P. BOWDITCH, M.D., 



Professor of Physiology iu the Harvard Medical School. 



JOHN G. CURTIS, M.D., 



Professor of Physiology in Columbia University (College of Physicians and Surgeons). 



HENRY H. DONALDSON, PH.D., 



Head-Professor of Neurology in the University of Chicago. 



W. H. HOWELL, PH. D., M. D., 



Professor of Physiology in the Johns Hopkins University. 



FREDERIC S. LEE, PH. D., 



Adjunct Professor of Physiology in Columbia University (College of Physicians and 

 Surgeons). 



WARREN P. LOMBARD, M. D., 



Professor of Physiology in the University of Michigan. 



GRAHAM LUSK, PH. D., 



Professor of Physiology in the Yale Medical School. 



W. T. PORTER, M. D., 



Assistant Professor of Physiology in the Harvard Medical School. 



EDWARD T. REICHERT, M. D., 



Professor of Physiology in the University of Pennsylvania. 



HENRY SEWALL, PH.D., M.D., 



Professor of Physiology in the Medical Department of the University of Denver, 



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