THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 



287 



minimum and evening maximum are by far the most pronounced pliases of the diurnal 

 period. The following shows the hours of the double period for the seasons and 

 the year : — 



The following table shows the seasonal values for the three years. These values 

 will be found at some hours to differ by '001 inch from those given in the previous 

 table — this small divergence being due to the correction for " midnight difierences," 

 which varies a little according as to whether the mean of the whole period of three 

 years is taken, or whether each year is corrected separately. 



Showing the Departure from the Mean for the Four Seasons and the Year of Hourly Values 

 OF Barometric Pressure at Cafe Pembroke, Falkland Islands, 1903-1905. 



Thousandths of an Inch. 



Hour. 



10 



11 



Noon 

 1 

 2 

 3 



4 

 5 

 6 

 7 



10 

 11 



Mdt. 



Spring. 



bummer. 



12 



7 



4 



3 



2 



4 



5 



4 



2 



5 



10 



16 



18 



21 



19 



18 



n 



2 

 4 

 11 

 17 

 19 

 16 

 14 



10 

 7 

 4 

 3 

 1 

 2 

 1 

 



4 



7 



11 



U 



16 

 18 

 17 



4 



7 



11 



U 

 16 

 16 

 U 



9 

 5 

 1 





 1 

 1 

 1 

 1 

 3 

 6 

 11 



u 



17 

 IS 



n 



U 

 s 





 7 

 13 

 17 

 18 

 16 

 14 



3 



1 

 

 2 

 5 

 9 

 10 

 8 

 3 

 1 



7 

 6 

 9 

 9 

 10 

 9 

 7 

 3 

 1 

 5 

 9 

 8 

 7 





6 

 1 







1 



3 



6 



6 



4 



1 



3 



6 



9 



11 



12 



12 



12 



10 



5 







6 



11 



13 



13 



11 



Autumn. 



5 



6 



4 



1 



4 



5 



9 



12 



13 



10 



6 



2 



1 



4 



5 



4 

 S 



1 

 



3 



6 



10 



13 



14 

 11 



6 



1 



5 



10 



12 



12 



12 



7 



8 



4 

 3 

 1 

 1 

 2 

 4 

 6 

 9 

 10 

 7 

 4 

 1 

 7 

 10 

 10 

 10 

 6 

 5 

 3 

 1 

 

 1 

 3 

 3 



iVote.— The heavy type indicates an excess, and the italic type a defect. 



Hence it will be seen that the broad features of seasonal distribution are sub- 

 stantially the same for each of the years under review. 



VOL. II. 39 



