The first edition of Lord's book on diseases of the bronchi, lungs and pleura, which appeared in 1915, was favorably received by the profession. Many expressed regret that a consideration of tuberculosis was omitted. In the present edition more than 100 pages are devoted to a comprehensive discussion of the subject. In addition to this valuable feature, the book has been revised and considerable new material has been added. Among the most important additions are those concerning atelectasis, the etiology and treatment of bronchial asthma, the newer conceptions of the resolution and recovery from lobar pneumonia, streptococcus bronchopneumonia and empyema, bronchoscopy, increase in the scope of thoracic surgery, the roentgen ray in diagnosis and the treatment of acute empyema by closed drainage.
In this edition the same high standards are maintained and the profession is given the benefit of fifteen years' additional experience by one who has made an extensive