202 The machine at Wari Bunder required the same establishment and stores, being of the same type and construction in all respects, except that it was mounted on wheels. A third disinfector was constructed to the orders of the Committee by a local firm, Messrs. Richardson & Cruddas, at a cost of Rs. 2,200, and was installed at the Nairelwadi Camp. A fourth, viz., an equifex horizontal disinfecting stove, of the Genishe and Heischer Patent, was placed at the disposal of the Committee by the Surgeon-General with the Government of Bombay, and was erected at the Byculla Camp, but was soon again removed to Karachi on the reappearance of Plague at that port. As it was not possible to provide each of the remaining camps with a steam disinfector, the following arrangements were made for dealing with the kit of persons sent to camps in which no steriliser was at work:- The kit of each person was overhauled, and such articles of wearing apparel as would not take harm by being steamed in the steriliser, and all bedding, was packed into a numbered bag and securely tied and sealed with a small lead seal in the presence of the owner; a token stamped with the same number as that on the bag was then given to the owner of the kit, and the bag was sent to the nearest disinfecting yard, disinfected and returned to the owner without being opened. This arrangement was viewed with great favour by the people who were satisfied that they would get their belongings returned to them intact. At the same time the ordinary camp establishments found the packing, lacing, and sealing somewhat elaborate, and the system was regularly carried out only in the Kennedy Seaface and Goculdas Camps under Major Ross. Disinfector's action. The first condition of a good steriliser is that it should withdraw the air from the innermost recesses of bulky articles under treatment. The mere admission of compressed steam forces the air into these with- out withdrawing it, in consequence of which the steam is prevented from entering to any depth. In the equifex, perfect steam permeation is effected by cutting off the steam supply to the inner chamber after the requisite pressure has been exercised for a short time, and then causing a certain reduction in pressure by the quick discharge of a portion of the contained steam. Hence, a sudden expansion and withdrawal of the compressed air in the inner folds of the articles, and its discharge into the atmosphere with the steam. After three or four repetitions, it is found that