?18 or persons to enable him or them to go from one place to another or for any purpose, such pass or certificate shall not be used by any other person or persons or for any other purpose. * 21. The provisions of these Regulations in regard to segregation do not apply to persons who hold certificates that they have been inoculated by M. Haffkine's process, provided such certificates bear a date not earlier than six months but not later than ten days, previously. Such persons shall be entitled to the following privileges:- (a) Unless suffering from, or suspected to be suffering from, plague, they shall not be liable to detention at any railway or road observation camp when travelling, except for such period as may be required to disinfect their baggage and clothes, if those are considered suspicious. (b) They shall not be liable to take out passports and present themselves daily for observation for ten days after arrival from a plague-infected place, or from any place noti- fied by His Excellency the Governor of Fort St. George in Council for the purposes of No. 22 of the City of Madras Plague Regulations; but they may be observed at their own residence and shall, with this view, be bound when required by any Plague officer to give their names and addresses for the next ten days. (c) Inoculated persons who have been living in an infected house or have otherwise been exposed to plague infection shall not be liable to be segregated, but may be required to evacuate the infected house and to have their clothes and personal effects disinfected. When, however, all the occupants of a house have been inoculated, neither the patients nor the other inmates of the house shall be required to be segregated, provided arrangements are made to the satisfaction of a Plague authority for the disinfection of the house and its contents, and for the prevention of the spread of plague to the neighbouring dwellings. The inoculation certificate shall be in the following form. But when in a certificate issued under authority, thumb impression has not been taken, other satisfactory evidence of identification may be accepted:- * As re-issued in G.O., No. 381-P., dated 11th March 1899, and published in the Fort St. George Gazette, dated 11th April 1899, Part I-A, pages 141 and 142.