Abstract
A comparison of intermedius-tync strain of Corynebacterium diphtheriae obtained from Dr. J. W. Mc-Leods, Leeds, England, and minimus-type strains described by Frobisher in Baltimore. Minimus was found to be a distinct colony variant and was differentiated from strains described as intermedius by Anderson, et al. Other small-colony variants have also been found differing from both the intermedius and minimus types.