METEOROLOGY 373 



upon the long rows of figures as tedious and superfluous. The 

 complete working out of these observations can only be published 

 after a lapse of some years. 



As regards the accuracy of the figures here given, it must be 

 noted that at present we know nothing about possible alterations 

 in the errors of the different instruments, as it will not be possible 

 to have the instruments examined and compared until we arrive at 

 San Francisco next year. We have provisionally used the errors 

 that were determined at the Norwegian Meteorological Institute 

 before the expedition sailed; it does not appear, however, that they 

 have altered to any great extent. 



The meteorological outfit on the Fram consisted of the following 

 instruments and apparatus: 



Three mercury barometers, namely: 



One normal barometer by Fuess, No. 361. 



One Kew standard barometer by Adie, No. 839. 



One Kew marine barometer by Adie, No. 764. 



Five aneroid barometers: 



One large instrument with thermometer attached, without 



name or number. 

 Two pocket aneroids by Knudsen, Copenhagen, one 



numbered 1,503. 

 Two pocket aneroids by Gary, London, Nos. 1,367 and 



1,368, for altitudes up to 5,000 metres (16,350 feet). 

 Two hypsometers by Casella, with several thermometers. 



Mercury thermometers: 



Twelve ordinary standard (psychrometer-) thermometers, 



divided to fifths of a degree (Centigrade). 

 Ten ordinary standard thermometers, divided to degrees. 

 Four sling thermometers, divided to half degrees. 

 Three maximum thermometers, divided to degrees. 

 One normal thermometer by Mollenkopf, No. 25. 



