24 



TEMPERATURE. 



Table 4 — concld. 



During the first few days that the party was on the Barrier calm weather with little 

 or no cloud prevailed over the whole region. In consequence low temperatures occurred, 

 but while the mean temperature did not fall below -36-4°F. at Cape Evans it fell to 

 — 64'2 F. on the Barrier. During these five days the mean temperature on the Barrier 

 averaged 26°F. below the corresponding temperature at Cape Evans. 



On the next day a high wind accompanied by overcast sky and snow set in. The 

 temperature at once rose by 10 degrees at Cape Evans and 20 degrees on the Barrier, but the 

 Barrier temperature remained on the average of the day 11 degrees below that of Cape Evans, 

 althougli at 9-30 .\.m. the difference was only G degrees. 



After the wind had died away a period of extreme cold set in on the Barrier. On 

 July 6th (for position see figure 2) the temperatures measured on the Barrier were the 

 following : — 



Table 5. 



The Barrier temperatures were taken with extreme care. Against tiie entrv in the meteo- 

 rological log at 17 hours 15 minutes, Bowers has noted ' Carefully checked by Wilson ' ; 

 lie also measured the temperatures with a spare thermometer and found the two agreed 

 within half a degree. This is the lowest temperature recorded on the Barrier — or anywhere 

 in the Antarctic — audit is satisfactory to know that it was so carefully checked. The mean 

 temperature on this day was ■-72-9°F. on the Barrier and — 43-7°F. at Cape Evans. 

 Thi.s was the coldest day at Cape Evans during our stay in the Antarctic and no doubt 



