INDEX 



Paragraph 



Actual elevation defined , 174 



Adjustment of barographs at high elevations 154 



to station pressure 153, 172 



Attached thermometer 8 



Atmospheric pressure 4 



Authority to clean barometers 187 



Air and moisture in barometer tubes 130, 131 



can not be perfectly removed from barometer tubes 133 



how removed from barometer tubes 133 



in barometer tubes 129 



vent in cistern of barometer 111 



Tuch cisterns 143, 144 



Aneroid barographs, Richard's 88 



barometer 6, 46-58 



"creeping of " 56 



' defects in 49,55 



effects of temperature 48, 51 



Goldschmidt's 50 



how adjusted 54 



in determining heights 105, 106 



reading, how made 52 



test of condition 58 



Barographs 68, 69, 191 



adjusted for high elevations 154 



to standard pressure 153 



to station pressure 153, 172 



aneroid, Richard's 88 



clocks for, regulated and wound 157 



compensated siphon, Marvin system 72-87 



check observations 87 



cleaning mercury 78 



dismantling 79 



magnifying and recording mechanisms. _ 82 



temperature compensation 80, 81 



time checks 83 



marker 85, 86 



corrections for errors of 160 



exposure of 89, 152, 176 



Foreman's 70 



forms for, changed 156 



refigured 155 



trimmed 156 



hourly reading of 193 



how exposed 152 



Barographs, Marvin's normal 71 



pens for, cleaned 159 



time error, checked : 158, 192 



weighing 69 



Barometer, air vent of cistern 111 



adjustment of cistern 97 



vernier 98 



aneroid 6 



at elevated stations, how handled 114 



boxes for 91 



old style 93 



marine 96 



care and preservation of 108, 115 



change or substitution of 116 



changes in location of 148 



(87) 



