24 



UK CORD AND REDUCTION 



The following table (IV, 6) contains the interpolated values, by the insertion of 

 which Table IV will be rendered complete : — 



The two preceding tables furnish the following values for the amplitude of the 

 diurnal fluctuation in each month of the year, also in each season, and for the 

 whole year, together with the hours of maximum and minimum temperature, and 

 the hours when the mean temperature is reached, for each of the periods. 



The annexed diagram (B) exhibits the monthly values of the diurnal range: — 



(B.) Diurnal Amplitude. 



The autumn and winter months have a range of less than 3°, whereas the months 

 u! March to duly exhibit two and a hull' times that amount. The maximum value 

 v as observed in . I une, amount 9°.60; the minimum value occurred in December, 

 V:|M "' 0°.14. For comparison, 1 may add that the corresponding values at Van 



