My object in this article will not be to follow the old beaten path in an essay on the subject of pneumonia. Every standard author on the practice of medicine has furnished us with his chapter, while almost countless monographs have appeared on this subject. While there is almost universal consent and agreement given to our teaching upon the subject of pneumonia and its treatment as a whole, yet upon some vital points there is not such happy accord and harmony. While it would be profitless to attempt a review of our vast literature upon this subject or compile an essay therefrom, yet a few moments spent in the discussion of some doubtful points in regard to which there still exist diverse and conflicting opinions, may yield results of practical importance.
First, is pneumonia simply an inflammation of lung tissue, purely local, or is it a constitutional disease with this