97 
Grazing: Page. 
Duties respecting. 4 
Trespass, regulations. 21 
Guarding objects of evidence. 29 
Guards,selection and instruction of. 1,3 
Hand lens, value of. 39 
Handling evidence material. 29 
Hearings, preliminary.. 73 
Hearsay as evidence.47,81 
Horses, search warrants for taking tracks of. 63 
Hostile and lying witnesses, interviewing. 49 
Hostile witnesses, examination of, in court. 75,76 
How many men in investigation. 26 
Identification of— 
Finger prints. 39 
Persons. 55 
Tracks. 33 
Immunity, promises of, not to be made. 53 
Impanelling the j ury. 74 
Impeachment of testimony in court. 72,76,77,78 
Impressions of raised surfaces, to take. 41 
Inaccuracy in testimony. 48 
Incendiaries, taking fewer chances with. 53 
Indian reservations fires originating from. 14 
Indians, arresting on a reservation. 14 
Indirect questioning, use of.51,76 
Inference, effect of, on accuracy of testimony. 48 
Infirmity, bodily, as a defense in court. 72 
Information, preliminary, value of. 6,26,43,76 
Informations and complaints. 58 
Inspection of investigative work. 3 
Instructions, necessity of applying to concrete cases. 30 
Interpretation of clues, importance of. 28 
Interrogation, helps to. 43 
Interviewing— 
Hostile and lying witnesses. 48 
Intentional offenders. 52 
Truthful witnesses. 45 
Who should do. 45 
Unintentional offenders. 47 
Investigation: 
Duties respecting. 2 
Methods in. 25 
Report to District forester. 68 
Investigators, special... 2,41 
Judicial interpretations: 
Federal law.^. 10 
State law. 14 
