PART I. 

 Meteorological observations at Framheim. 



Instruments and observations. 



I. Barometers. 



1. Barometer Wild-Fuess No. 361. The constant correction fomid at 

 the Meteorologicai Institute in Christiania was ■+- 0.095 — o-035 ™™- The 

 readings were taken with the same vernier at the upper and lower top of 

 mercury, and the difference noted as the height of mercury. The bottom 

 screw was not used. 



2. Kew Station barometer Adie No. 839. In Christiania the constant 

 correction was found to be — 0.65 ± 0.05 mm. Both barometers reached 

 Framheim in good condition. Unhappflv the3' were not brought home. WTien 

 the >Fram< was lying at Colon the barometers were broken by accident. At 

 Framheim thej' were in perfect order and were obserxed bj* Capt. Amund- 

 sen when he was at home, and at other times by Mr. Lindstrøm. 



A comparison between the observations of Fuess and Adie for April 

 191 1 I Amundsen) reduced to 0° C, normal barometer and normal graxnty, 

 gives Adie — Fuess = 4- 0.46 mm. A similar comparison for January 1912 

 gives Adie — Fuess ^- 4- 0.59 mm. The differences are partlj' caused by 

 the circumstance that the readings of the Fuess thermometer are almost 

 always higher than those of the Adie thermometer, up to 7'', as a mean 

 i°.8 higher. Apparently the Fuess was not so well sheltered from the 

 heat of the kitchen range as the Adie. The average temperature was 18°. 

 Considering that the Adie was better sheltered fh)m radiant heat, that its 

 mode of treatment was much better known by the obserxers than that of 

 the Fuess, and that the obsenations of the Fuess with the double settings and 

 readings of the vernier were liable to cause a greater error than those of the 

 Adie, I have taken only the Adie obser\-ations as worthy of pubUcation. In 

 cases of doubt, the Fuess has been consulted. The reduced values have 

 been compared with the barograms and corrected when necessary. 



Vid-Selsk- Skrifter. I. M.-N. Kl. 1915. No. 5. 1 



