Trespass 150 Forest insects 154 Tree diseases 159 Water supply 162 Public health 167 Violation of game laws 168 IV THE SALE AND RENTAL OF NATIONAL FOREST RESOURCES 170 The Sale and Disposal of National Forest Timber 170 Government Timber Sale Policy 171 Annual yield and cut 172 Timber reconnoissance 174 Logging the timber 176 The first step in purchasing government timber 180 Procedure in an advertised sale 180 Timber sale contract clauses 182 Special contract clauses 184 When the operation may begin 186 Marking the timber for cutting 186 Scaling, measuring, and stamping 188 Disposal of slash 190 Payment for timber 192 Stumpage rates 193 Cutting period 194 Readjustment of Stumpage rates 194 Refunds 194 The Disposal of timber to Homestead Settlers and Under Free Use 195 Sales to homestead settlers and farmers 195 Free Use 195 Timber Settlement and Administrative Use 198 The Rental of National Forest Range Lands 200 Importance of the live-stock industry 200 Permits issued in 1917 201 Kinds of range, grazing seasons, and methods handling stock 202 Grazing districts and grazing units 205 Who are entitled to grazing privileges 207 Grazing permits 211 Grazing fees 214 Stock associations 215 Protective and maximum limits 216