Contributions from the William Pepper Laboratory

covered at the post-mortem examination. The woman was sixty years of age, and showed signs of general atheroma. There was no history of injury, but most of her organs were more or less diseased, and she appears to have died from a combination of pleural effusion and hepatic cirrhosis. Dr. Joseph Walsh contributes an interesting paper on Pertussis, one of the gravest troubles of childhood. Unfortunately, he still leaves it an open question as to the role played by the Czapiewski-Hensel bacillus and as to the value of serum treatment. If any one of the articles contained in this volume can be regarded