Hardaway: Essentials of Vaccination, Chicago, 1882.

Hering: Ueber Kuhpocken an Kühen, Stuttgart, 1839.

Jenner: An Inquiry, etc., 2d ed., London, 1800.

Sacco: Trattato di Vaccinazione, Milano, 1809.

Seaton: A Handbook of Vaccination, London, 1868.

Steinbrenner: Traité sur la vaccine, Paris, 1846.

VARICELLA.

BY JAMES NEVINS HYDE, M.D.