Studies of Pneumonia in Childhood

Introduction.-In a series of papers the subject of pneumonia in childhood will be presented mainly from the standpoint of morbid' anatomy and histology, but with reference also to its clinical aspects. Bacteriology will not be dealt with. In the first place, it will be an advantage to obtain a general view of the subject by means of a statistical analysis of a large series of cases, and the present paper will be devoted to this purpose. The subsequent papers will deal with the' so-called lobar type of pneumonia; broncho-pneumonia; bronchiectasis; and empyema. In these studies large thin sections of the entire lung have been used, and illustrations of these will be shown. These large sections give not only an extensive view in one plane of the morbid anatomy, but also permit an accurate microscopic study of the pathological processes over a wide extent of lung.