Abstract
In a rigidly controlled study of the salivary pH of 19 stutterers and 19 normals by means of the glass electrode, the author could find no means of dividing subjects into "sub-breathers" and "excitable psychopaths" as in Starr''s original work in which Starr showed a low pH to be characteristic of "sub-breathers." The present study shows no significant differences of any kind in any possible combination of stutterers and normals, and very little arithmetical difference in any combination.