The development of hygiene as a department of medicine is the prominent professional characteristic of this age. From a scarcely tolerated subsidiary to physiology or medical jurisprudence in a few schools, it has risen to become an important chair in all colleges of the highest standing. Health associations, health boards and health journals abound, and that which was itself only a subordinate study, has been the parent of another as abstruse and difficult as any of the older branches in medical science. Bacteriology alone is a special object of research, and works treating of it have the proportions and intricacies of old text-books. The public health is the refrain in the periodical professional literature; and the office of the practitioner to medicine would appear to be menaced as a sinecure.
Nevertheless, the insanitary doings of the people go on, and they continue to defy the unselfish counsels that aim to