_Public Health._ From the relation which the National Forests bear to the streams that issue from them, it will be seen that they may exert a great influence upon the health and general welfare of the communities in the valleys below. All persons either permanently or temporarily camped upon National Forest land are liable to trespass proceedings if unsanitary conditions result from their presence. All camp refuse must be disposed of either by burying or burning. This regulation applies to hunting and fishing parties, as well as to large logging camps, sawmills, and construction camps on National Forest lands. Thus the regulations strictly guard against the pollution of the water supply of the people who live in the large towns and cities, and also those who live on the Forests or near them. The watersheds tributary to many of the large western cities and towns are under special protection by the Forest Service. Under this sanitary regulation, it is possible to maintain such control of them as will greatly reduce the danger of typhoid and other enteric diseases. _Violation of Game Laws._ Wild game, fish and birds add materially to the enjoyment of the National Forests by the public, and their protection and preservation is a duty of Forest officers. Although this duty rests primarily with the State the Forest Service assists, as far as practicable, in the protection of game on the National Forests from illegal practices. Forest Service officials are at the same time State Game Wardens. In the event of a violation of the state game laws, they either apprehend the offender or report the matter to the proper state official. Various kinds of game and bird refuges may be included within National Forests, depending upon whether they are created by specific acts of the State Legislature or by Acts of Congress. In these refuges, hunting, trapping, willfully disturbing, or killing any game or bird is prohibited. Whether the violation occurs in the state game refuge or the national refuge, the Forest officer has authority to arrest the offender without warrant. CHAPTER IV THE SALE AND RENTAL OF NATIONAL FOREST RESOURCES The timber, the pasture, the water and mineral resources and the land in the National Forests are for the use of the people, and they may be obtained for legitimate use from the local Forest officers without delay. In fact, the Forest Service is doing all it can to encourage all kinds of business which depends upon National Forest resources. THE SALE AND DISPOSAL OF NATIONAL FOREST TIMBER There has been a steady increase in the amount and value of the timber cut on the National Forests. During the fiscal year 1917 over 700,000,000 feet of timber, valued at almost $1,500,000, was cut, while almost three times as much was sold. Most of this was cut in the States of Montana, Oregon, Idaho, Washington, California and Arizona.