This small volume is meaty and concise and carries the reader into a broader field than its title might imply, into problems associated with respiratory obstruction. It is well written and easy to read and is based on wide experience.
The author doubts a specific causation of this disease but considers virus infection most important. Pathologic aspects, both ante and post mortem, are adequately described. Especially valuable is the careful attention to detail in treatment. The author emphasizes the prevention of complications after tracheotomy by first securing a free airway and then proceeding to operation without unnecessary dissection of fascial planes—a previously recognized contribution of the author.
There is an excellent discussion on the causes of emphysema and pneumothorax and their relation to infection and to operation.
One might wish that greater consideration had been given to the pathophysiologic involvement developing from purely mechanical factors, but the volume gives fairly