The common clinical manifestation of obstruction to the lachrymonasal duct in the new-born has been usually described under the term "congenital dacryocystitis," a very unsatisfactory one as a cystitis is not usually present, and when present is of secondary origin. Jackson1 has recently written on the subject under the title of "Delayed Development of the Lachrymal-nasal Duct." an entirely proper term, in a restricted sense, but not intended to cover all the conditions which may give rise to the symptoms of so-called congenital dacryocystitis.
Until the appearance of the paper of Peters2 but little consideration had been given this interesting and important subject and it is only within the past decade that frequent references to it are to be found in literature. Few of these are by American authors, and these mostly within the past three or four years. Historically, it is of interest to note that in