CONTENTS. V 



MAGNETICAL OBSERVATIONS- 



Daily Observations of Magnetometers, 1 



Term-Day Observations of Magnetometers, 29 



Extra Observations of Magnetometers, •••• 49 



Observations of Magnetic Dip, 75 



Observations of Absolute Horizontal Intensity, 79 



METEOROLOGICAL OBSERVATIONS— 



Daily Meteorological Observations, 85 



Term- Day AND Extra Meteorological Observations, 199 



ABSTRACTS OF THE RESULTS OF THE MAGNETICAL OBSERVATIONS, 219 



Abstracts for the Magnetic Declination — 



Annual Period, 221 



Variations with reference to the Position of the Moon, 223 



Secular Change, 224 



Diurnal Variation, ; 225 



Ranges of the Variations with reference to the Sun, 229 



Ranges of the Variations with reference to the Position of the Moon, 229 



Horizontal Component of Magnetic Force — 



Annual Period, 230 



Variations with reference to the Position of the Moon, 232 



Secular Change, 234 



Diurnal Variation, 235 



Ranges of the Variations with reference to the Sun, 236 



Ranges of the Variations with reference to the Moon, 238 



Vertical Component of Magnetic Force — 



Annual Period, 240 



Variations with reference to the Position of the Moon, 241 



Diurnal Variation,- •-, 243 



Secular Change, 245 



Ranges of the Monthly Means of the Diurnal Variation, 245 



Diurnal Ranges with reference to the Position of the Moon, 247 



Magnetic Dip — 



Secular Change, • 247 



Annual Period, 247 



Diurnal Variation, 248 



Ranges of the Monthly Means of the Diurnal Variation, 249 



Variations with reference to the Position of the Moon, 250 



Total Magnetic Force — 



Secular Change, 251 



Annual Period, 251 



Diurnal Variation, 252 



Ranges of the Monthly Means of the Diurnal Variation, 253 



Variations with reference to the Position of the Moon, 253 



6 



