THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 



249 



From the observations of these summer months it is clear that at this season barometric 

 pressure is lower over Graham's Land than over the ocean to the east. 



The mean temperature of the three months under consideration was 25°'9, the 

 absolute maximum l)eing 33°"8 on 2nd February 1903 and 24th March 1903, and the 

 minimum — 0'3 on 12th March 1904, the extreme range being thus 34°"1. The mean 

 daily range for this period was 5°"1, the greatest observed being 19°'4 on 12tli March 

 1904, while March 11th had a range of 15°"8, and March 10th 15°"0, these being the 

 only days in the three months with a range of 15° or more. The mean daily variability 

 of temperature was 2° "2. Comparing the mean temperature recorded at the other places, 

 we obtain the following values : — 



It will be observed how much colder it was at Snow Hill than over the ocean to the 

 east, the great difference of 13°'5 being recorded in March between the two places. 



The mean wind force was only 2 '4 in the Weddell Sea, and gales wen- uncommon, 

 there being an average of only 33 hours of gale force. 



The mean amount of cloud was 9"1, and 81 per cent, of the whole time the sky 

 was overcast, while the j^ereentage of cloudless hours was only 3. 



