590 



DR. GOLDSCHMIDT ON THE OBSERVATION'S 



monthly mean values of which have all the same sign, are exhi- 

 bited in the following table : — 



The following table contains the mean values for the differ- 

 ent months resulting from the observations in these three years, 

 and from the observations in the whole six years from 1834 to 

 1840; also, for more convenient comparison, the mean values 

 deduced in the first volume of the Resuliaie, for the years 1834 

 to 1837j ai'e here repeated: 



The progression of these differences in the period 1837-1840' 

 is quite analogous to that deduced from the first period, the least 

 value being in both in December, and the greatest in April. 

 The variations, however, in the mean values in different years, — 

 the discrepancies in the values for the same months in the dif- 

 ferent years, — and the difference of nearly two minutes between 

 numbers, each of which is derived from the observations of three 



