1898-1902. No. 4.] PRESSURE. 



The observations given in the following tables have been reduced 

 to 0° C, to the standard barometer (true barometric height), to sea-level, 

 and to standard gravity {cp = 45°, sea-level) i. 



At the head of the Tables is the year, the month, the name of the 

 winter station, the latitude <p, the longitude A, and the amount of the 

 gravity correction GC. 



During the stay of the Expedition in winter quarters a barograph 

 Richard was kept going. The very few omissions of observations of 

 the barometer in the observation-journal have been filled in by means 

 of the barograph curves. These are printed in italics. 



' As a spare barometer, the Expedition had the Kew station barometer Adie No. 

 C. 763, the same that was used on the Fram's Expedition of 1893 — 96. This 

 instrument came back in an unserviceable state, its mercury having been taken 

 out to be used for an artificial horizon for sextant observations. Happily the 

 barometer Adie No. 850, with which the observations on board were made during 

 the whole stay at the winter stations, remained in good order, and came back 

 unchanged, as the comparisons in 1903 have shown. 



