STUDIES ON NITRATED PROTEINS: I. THE DETERMINATION OF THE STRUCTURE OF NITROTYROSINE.' BY TREAT B. JOHNSON AND EDWARD F. KOHMANN. Received June 11, 1915. Introduction. This paper is the first of a projected series of publications from this laboratory, dealing with the chemistry of nitrated proteins. A short, historical review of work already done in this field, previous to the incep- tion of our investigations, has been incorporated. ...