Articles which can not be disinfected will be destroyed

17. The détention of vessels for choiera, yellow fever, smallpox, and typhus fever shall cover the period of incubation of the disease , the time of détention to commence from the date of last exposure. Yellow fever, not less than five days ; typhus fever, not less than twenty days ; smallpox, except in cases of successful vaccination , not less than fourteen days ; choiera, not less than five days.

18. Steam vessels from suspected or infected ports where yellow fever prevails may be allowed to enter at the port of Baltimore and ports north of Baltimore, Md., after five days from date of departure from such port, without disinfection or détention , unless in bad sanitary condition, or with bad sanitary history.**) In either case they will be detained

*) Articles of rubber, leather, skins, celluloid, hats, and gutta- percha buttons, etc., are destroyed by this process, and should be disinfected by immersion in bichloride solution (1 to 800) or 2 per cent solution of carbolic acid, the articles to be wholly submerged.

**) The following circumstances are among those which shall constitute bad sanitary history for a vessel within the meaming of this paragraph : Sailing from a badly infected port; lying in a badly infected locality of any infected port ; lying long in a harbor and having much communication with shore of an infected port; shipping men from shore in an infected port. Such men should

France, Siam.

in quarantine five days after disinfection. This régulation to apply to the North Atlantic coast only.

19. A vessel calling for ordcrs, supplies, or coal only may be allowed to proceed , unless there is a quarantinable disease on board at the time, or such dispose has been on board at ports en route , or at ports of departure , and when she is believed to be infected , in whicb case coal or supplies by barge can be towed to her, and she can take the coal or supplies from the barge with her own crew ; but the local health officer at the port shall allow no person or dunnage from such vessel to go ashore.

20. Passengers on ships detained at quarantine shall be removed therefrom as soon after arrivai as possible.

Passengers and crews detained at any national quarantine will be subject to rules and régulations promulgated from time to time by the Supervising Surgeon - General for their government.