If a small group is to be provided for in a temporary camp and a latrine must be built, the earthen closet will probably give the best satisfaction. This is made by digging a trench 2 ft. wide, 3 ft. deep and in length 2 ft. for each unit. Over the trench place a box seat 17 inches high, with holes having hinged covers. Bank earth around the bottom of the box and in front of it place a board walk. Protect the seat by pitching a tent over it or encircling it with a strip of canvas 5 ft. high, fastened to posts, the ends of which pass each other forming a protected doorway. A box of earth and a small shovel should be kept in the tent and every time the closet is used earth should be thrown into it. Lime should be used daily. When necessary to dig a new trench make sure that the old one is properly filled in. A latrine of this kind must not be placed near any water supply.
A type of latrine which is being built on permanent camp sites in the Palisades Interstate Park and which has been developed by the engineers of the Park Commission, is giving such satisfaction that an outline of its construction is herewith given.
Dig a pit in which is built a concrete tank 3 ft. wide, 3 ft. deep at one end, and 3 ft. 8 inches at the other, and 17 ft. in length for eight units, the concrete 6 inches thick.
Build over it a house 6 or 7 ft. wide, the rear and one side wall of which rest on the rear and lower end wall of the pit. The deep end of the pit for 18 inches is left outside of the house. This opening, which must have an adjustable cover, is used when cleaning the pit.
Floor the building to within 20 inches of the rear wall. Cover the opening in the floor with a box seat 17 inches high leaving in it properly made toilet seats, 2 ft. apart from center to center, with covers.
Make four agitators, one for every two units, by fastening a wooden paddle 5 x 7 inches onto one end of a 5-ft. length of 2-inch iron pipe. Put the pipes through a slot in the seat between the two openings, the paddle at right angles to the length of the seat, and clearing the bottom of the pit by three inches. The agitators are held in place by clamps attached to the bottom of he seat which allows the pipe handle to be moved from side to side. Vent pipes 4 inches in diameter extend from the pit up through the seat back of each cover, and through the roof for 18 inches.
Charge the pit with 175 gallons of water and 240 pounds of Kaustine, a patented chemical compound. By moving the agitator handles from side to side whenever the latrine is used all solid matter is brought in contact with the Kaustine solution and decomposed.
As with all other latrines, the house must be kept clean and the seats scrubbed each day. It is not necessary to use any disinfectants in this type of house, but it should have two doors and windows.
2. First Aid
First Aid supplies are a necessity in camp and should always be provided. Some one person must be responsible for them and when possible this person should be either a trained nurse or a practical nurse.