228 



METHODS OF COMMUNICATION FOR FOHKtiT PRO1 'I-:('TIO.\ 



Emergency lines, connecting to permanent. 7'5 



maintenance of, 7>6> 



pole setting on, 76 



taking up wire on, 76 



use of, 74 

 Emergency telephone kits, types of, 39' 



telephone kits, use of, 10-8, 1I1'4 

 Equipment of construction crews, 4'6 



standard list of, >36 

 Exchanges, private, 8>2 

 External telephone systems, 24 



Fire boss, 1>8 



'Fires, forest, detection of, 5 



forest, prevention of, 3, 4 



forest, suppression of, 7 

 Fischer high-power lamp, 184 

 Flags, range of, in signalling, Ii8 ( 6' 



speed of, in signalling, li&T 



use of in forest protection, 22, 1'87 

 Flux, 40, 219 



Forest protection force, functions of, 3 

 Forest iService heliograph, I'6i5 

 Free service on Forestry Branch lines, 35 

 Frequency, definition of, 120 

 Fuses, types of, 39 



use of, 88, H35 



Galvanizing, specifications for, 209 

 Gauges, wire, names of, IV 



wire, comparison of, 222 

 Generator, electro-magnetic, 120 



oiling of, Ii50 



telephone magneto, 121, 127 



telephone magneto, repairs of, 145, 147 

 Ground rods, portable, 41 



portable types of, 41 

 Grounds,' 3'2, 9'0 



multiple, '9-2 



precautions in locating, 91 



temporary, 116 

 Guy rods, 38 

 Guys, anchor, 55 



pole, 54 



rock, 57 



tree, 56 



Hammers, claw, 4.1 



Hand set, Adams, 39, liO, 1-10, 11130, 1,32, 1152 



Haven clamps, 38 



Haze, effect on range of heliograph, 175 



Heliograph, 1160 



adjustment of, 1174 



American Army, 1160, H6<3, 173 



British Army, 1,6-0, 162, 173' 



Forest Service, 16>0 



Godwin, 160, 1(6*5, H&9 



mirrors, I 1 6' 9 



parts of, 1'6'9 



range of, 1'61 



screens, 170 



sighting-rods, l'7'O 



speed of, 161 



stations, 21, 160, 165 



tripods, 170 



use of in forest protection, 21, l'6'O 



use of at lookout stations, 165 



use of on patrol, 169 

 Heliographs on towers, 16'8 

 Heliographing by artificial light, 181 



by moonlight, 1-81 



with one mirror, 1711 



with two mirrors, 172 



High-tension lines, interference from, 42, 60, 

 62, 7'8, 104 



protection from, 89, 94, 1134 

 Hitch, barrel, use of, 76 

 Holes for telephone poles, digging of, 50 



Howlers, 40, 96, 132 



use of in vibratory signalling, 9'6 



Induction, electro-magnetic, definition of, 119 



electro-static, definition of, 120 

 Insulator, definition of, 1X8 

 Insulators, glass, specifications for, 2H3 1 



glass, types of, 37, 52 



glass, use of, 27, 74 



split tree, attachment of 70, 7 | 3 



split tree, specifications for,. 214 



split tree, types of, 37 



split tree, use of, 29, 30, 42, 44 



strain, 41, 71 

 Internal telephone systems, 25, 36 



Joints, emergency wire, 7'6 

 insulated wire, 93. 

 Western Union, 65 



Kitchen equipment, list of, 19'S 



Knives, electricians', 40' 



Lanterns, acetylene, for signalling, 182 



electric, for signalling, Is8i3, 184 



Fischer high-power, 184 



signalling, 182 



Lightning arresters, types of, S'9 1 



arresters, use of 88, I'S'S' 



danger of, in construction, 60 

 Linemen, 29 

 "Listening in," Ii31, 13'2 

 Location of telephone lines, factors influencing, 



42 



Lookout men, permanent, in forest protection, 

 17, 18 



stations, 7, 21, 2*6, 36, 7(3, H6'5, I<8i5, 18'7 



station telephones, 94 



stations, heliograph at, 16'5 



Magnet, definition of, 118 



Magnets, use of, in generators, 1/28' 



use of, in ringers, ll>2 ! 9 

 Magneto telephone, description of, 117 

 Materials, emergency line, 74 



line, 59, 6'9 



standard, list of, 36 

 Mclntyre sleeves, 38, 6 ( 5 

 Message codes, 194 

 Microphone, carbon, 123 

 Mil, definition of, 121 

 Mobley wire-cradle, 43 46 

 Monkey-wrench, 41 

 Mounting-box, protector, specifications for, 219 



Nails, 37 



milonite, 40, 94 

 Numerals, International Morse, 176 



Ohm, definition of, 119 



Ohm's Law, 111-9' 



Open-tank treatment of poles, 48 



Operators, heliograph, training of, 180 



Pack-frames, Klondike, 45, 46 



Mobley, 4i3, 4'6 

 Packmaster, 10, 18, 19 

 Party lines, definition of, 1137 

 Patrol, railway speeder, portable telephone for, 



1-09 



Patrolmen in forest protection, 18, 21, 2'5. 

 Permanent forces, direction of, 9 

 Pigeons, carrier, 14 

 Pike-poles, 38 

 Pipes, grounding on, 91 

 Plans, fire, 9 



telephone system, 2'3, 25 

 Plates, ground, types of 41, 91 

 Pliers, linemen's, 3'7, 40 



