TENT COT. For experimenting in outdoor sleeping a tent cot is a very simple arrangement. It consists of a plain canvas cot with a frame supporting a small tent. Ventilation is secured by openings at both ends; also at the side where the patient enters. These openings are covered with flaps which can be opened or closed. It is light, weighing from twenty to fifty pounds, and its position and exposure can be conveniently changed. The cost is $9. KNOPF'S HALF TENT. Another simple arrangement is Knopf's half tent.[5] It consists of a frame of steel tubing covered with sail duck and secured with snap buttons on the inside. It is used for patients sitting out of doors. The reclining chair is placed in the tent with its back to the interior. Its weight helps to hold down the floor bracing attached to the frame. Sleeping Porches One of the most important arrangements for outdoor sleeping is the sleeping porch. To be convenient, it should have an entrance from a bedroom, and, when possible, from a hall; for every outdoor sleeper should have, during cold weather, a warm apartment in connection with his open air sleeping room. The best exposure in Illinois is south, southeast or east. Sleeping out should be a permanent thing during all seasons. The sleeping porch must be kept neat and attractive. A cot placed between the oil can and the washtub on a dingy back porch is very dismal and bound to have a depressing effect on the sleeper. It costs very little to arrange an ordinary sleeping porch provided you have the porch to begin with. If a porch is fairly deep and sheltered on two sides by an angle of the house, sufficient protection for moderately cold weather can usually be obtained by canvas curtains tacked to wooden rollers. These can be raised and lowered by means of ropes and pulleys, the bed being placed so that the wind will not blow strongly on the patient's head. ORDINARY PORCHES.[6] A useful porch can be built for $15 to $25 with cheap or second-hand lumber, and if only large enough to receive the bed and a chair will still be effective for the outdoor treatment. The roof can be made with canvas curtain, or a few boards and some tar paper. The end most exposed to the wind and rain and the sides below the railing should be tightly boarded to prevent drafts.