The present investigation has been undertaken
with the object of obtaining information as to:
(a) The relative incidence of the bovine and
human types of tubercle bacillus in the
infection in man.
(b) The phenomena of latent tuberculous infection
in a series of patients dying from
causes other than tuberculosis, and in whom
tuberculous lesions could be demonstrated,
on naked eye examination. and
(c) The question of prevalence of tuberculosis.
At the same time the morphological and
cultural characters of the human and bovine tubercle
bacillus were observed, and the portals of entry
through which tubercle bacilli may invade the human
body have also received attention.