?8 to the satisfaction of the medical officer appointed by the Collector in this behalf. 20. The Collector, plague officer or assistant plague officer may at any time enter, or authorize any one in writing to enter, any building or place in which plague is reputed or suspected to exist and may isolate any person suffering from or suspected to be suffering from plague and may also direct such building or place to be completely evacuated. 21. If the Collector or plague officer is of opinion that the destruction of any hut or shed is necessary to prevent the spread of plague, he may summarily take measures for the destruction of such hut or shed and the materials of which it is constructed. 22. The Collector of the district, a plague officer, or assistant plague officer, the medical officer attending a plague case or a plague inspector (or a revenue inspector, if no other revenue officer of higher rank is available) may destroy the clothing, bedding, rags and other articles found in possession of, or in the residence of, a person suffering from plague or suspected plague, as well as clothes worn on his person. The destruction of such clothing, etc., should, however, be resorted to only when effective means of disinfection are not available. 23. The Collector or plague officer may order the disin- fection of any building in which sick or dead rats have been found. 24. For the purpose of effecting the disinfection pre- scribed by these rules, the Collector or plague officer may, at any time during daylight, force open any closed house which, in his opinion, requires disinfection: provided that a notice calling upon the owner or tenant of such house to open the house before a specified time shall have been served on him, or posted on some conspicuous part of the building, and the house has not been opened accordingly; and provided also that as little damage as possible shall be caused to the house in the act of opening. Locked receptacles inside the house may be forced open by the same officers or officers similarly authorized. 25. Collectors shall provide all facilities for the inocula- tion of persons who may desire to be inoculated against plague and every person successfully inoculated shall be given a certificate by the inoculating officer in the form shown in Appendix E.