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Rh 42. Cars used for the conveyance of passengers, mail, and baggage shall not be detained at frontiers.

If it should happen that one of these cars is contaminated or has been occupied by a plague or cholera patient, it shall be detached from the train and disinfected as soon as possible.

The same rule shall apply to freight cars.

43. The measures concerning the crossing of frontiers by railroad and postal employees shall be determined by the companies or departments concerned and shall be so arranged as not to hinder the service.

44. The regulation of frontier traffic and questions pertaining thereto, as well as the adoption of exceptional measures of surveillance, shall be left to special arrangements between the contiguous nations.

45. It is the province of the governments of the riparian nations to regulate the sanitary conditions of river routes by means of special arrangements.

46. It shall be incumbent upon the competent authority to take effectual measures to prevent the embarkation of persons showing symptoms of plague or cholera.

Every person taking passage on board a vessel shall, at the time of embarkation, be examined individually in the daytime on shore, for the necessary length of time, by a physician delegated by the authorities. The consular officer of the nation to which the ship belongs may be present at this examination.

As an exception to this stipulation, the medical examination may take place on shipboard at Alexandria and Port Said, when the local health authority deems it expedient, provided that the third-class passengers shall not be permitted to leave the vessel. This medical examination may be made at night in the case of first and second class passengers, but not of third-class passengers.

47. It shall be incumbent upon the competent authorities to take effectual measures:

1. To prevent the exportation of merchandise or any articles which they may consider as contaminated and which have not been previously disinfected on shore under the supervision of the physician delegated by the public authorities.

2. In case of plague, to prevent the access of rats to the vessel.