In the Special Communication entitled "Autogenous Vaccine in Theory and in Practice," by David T. Smith, MD, in the February issue of the Archives (125:344-350,1970), the following corrections should be made: (1) The authority on Brucella, to whom reference is made on page 348, column 3 (reference 22), is I. G. Huddleson, DVM, MS, PhD. (2) Also on page 348, column 3, the correct spelling of the trademark name for Brucella protein nucleate is Brucellergen.