CONTENTS. 



Introductory Letter 



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 V 



Part I.— TEMPERATURES. 



Introfluetory note ..... 



General account and development of index corrections 



Record of atmospheric temperatures 



Investigation of the diurnal variation 



Investigation of the annual variation 



Influence of wind and snow on the temperature . 



Analysis of the recurrence of maxima of cold during winter 



Tabulation of hourly corrections for periodic variations . 



Decrease of temperature with elevation 



Surface temperature of sea water .... 



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Part II.— WINDS. 



Introduction . . 



Record of the observations of the wind 



Method of reduction 



Discussion of the resulting direction of the wind 



Average force of the winds 



Discussion of the mean velocity of the stime 



Discussion of the quantity and frequency of the winds 



Duration of the winds .... 



Rotation of the same .... 



Note on gales . . . 



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Part III.— ATMOSPHERIC PRESSURE. 



Introduction ....... 



Comparison of the aneroid and mercurial barometers 

 Record of hourly observations of the atmospheric pressure 

 Discussion of the diurnal variation .... 



Discussion of the annual variation .... 



Irregular oscillations, diurnal change, monthly and annual extremes 

 State of the barometer during gales .... 



State of the barometer during rain .... 



Dependence of atmospheric pressure on the direction of the wind . 



Comparison of the relative dependence of pressure and temperature on the wind 



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