32 



TEMPERATURE. 



and the Barrier south of One Ton Camp are shown by small crosses. At first we will dis- 

 regard the latter and fix our attention on the former. It will be seen at once that the 

 circles lie fairly regularly about a curve having a maximum in December and a minimum 

 in May or June, and there can be little doubt that this curve gives approximately the mean 

 difference in temperature between Cape Evans and the Barrier north of One Ton Camp 

 throughout the year. By taking the mean values of this curve for each month and applying 

 them to the mean temperature of McMurdo Sound we obtain the mean temperature of the 



Barrier. 



Table 11. 



Mean Temperature of MeMurdu Sound and of the Barrier north of One Ton Camp 



Turning now to the temperatures on the Barrier south of One Ton Camp we see from 

 the crosses in figure 7 that it is impossible to -construct a similar curve giving the annual 

 variations of temperature for this region. It has already been explained that the high tem- 

 perature over the south of the Barrier in December was mainly due to a period of very 

 unsettled weather which may or may not be usual at this time of year. The only safe 

 conclusion to be drawn from the summer observations is that during November, December, 

 and January, there is no large consistent difference in temperature between the north and 

 south of the Barrier. After January, however, the temperature appears to fall much more 

 rapidly over the south than over the north of the Barrier, but for reasons already given 

 it is more than probable that 1912 was an abnormal yeap. It is quite impossible to 

 believe that normally there is a difference of nearly 40 degrees in March between McMurdo 

 Sound and the south of the Barrier. In fact the position of the cross for March in figure 7 

 is further support, for the contention that Captain Scott experienced unusually low tempera- 

 tures on his return from the Pole. We are therefore left mth the conclusion that the 

 temperatures after the summer are lower over the south than over the north of the Barrier, 

 but that the amount of the normal difference is unknown. 



Framheim.—FoT our study of the geographical distribution of temperature the observations 

 made at Framheim are of the greate.st import.ance. Although Fraraheim was so near the 



