Since May, 1927, thirty-five new species and varieties of moss have been added to the collection at Iowa Wesleyan College. While the writer had not thought it possible, on account of other duties, to continue the study of mosses, they have proved so irresistibly fascinating that a few specimens have been picked up, although at decidedly odd moments. One day, however, was spent in a definite collecting trip, in Grannis Hollow, Fayette County. In that one hollow twelve species were found not hitherto reported for Iowa. One hardly dares imagine the number that might be found if a thorough study were made of northeastern Iowa, that most fruitful region of the whole state, where apparently no work has been done. Of the thirty-five species added ...