The literature or the subject of Bronchopneumonia
is very silent regarding the occurrence of primary
forms, particularly in adults.
In this paper I will endeavor to show that the disease known as "Catarrhal pneumonia", "Lobular pneumonia", "Capillary bronchitis" and "Bronchopneumonia" is by no means uncommon as a primary disease in adults
that it occurs chiefly in weakly persons, that it has
different varieties, both pathologically and clinically,
that these varieties depend chiefly upon the virulence and distribution of the infective agent, and
that the infective agent in primary bronchopneumonia
is the same as in primary fibrinous pneumonia, namely
the rneumococcus, with occasionally a mixed infection
with the strepto coccus.
I would urge that primary Brorchopneunonia should
be classed along with fibrinous pneumonia, and be kept
distinct from the secondary forms of bronchopneumonia,
as it undoubtedly differs from it in its etiology.
Primary Pneumonia would thus be capable of being
described as an infective disease, due to the pneumococcus, affecting persons of all ages, and presenting
grave constitutional symptoms, with signs pointing to
the local seat of infection, and showing both lobar
and lobular implication of the lung.