ANTARCTIC CLIMATE. 43 
THE BELGIAN EXPEDITION. 
See also Henryk Arctowski, ‘The Antarctic Climate,’ Geographical Journal, 
vol. xiv. (1899) p. 413. 
PRELIMINARY RESULTS OF THE METEOROLOGICAL OBSERVATIONS OF 
THE BELGIAN ANTARCTIC EXPEDITION. 
I. Presswre—M. Argtowski, Meteorologist and Geologist to the 
Belgica, has published in ‘Ciel et ‘erre, No. 12 (26th year), 
August 16, 1899, the most important results of his observations. 
This expedition has had the merit of supplying to science the first 
complete year’s records from the Antarctic regions. 
The following figures for pressure are quite approximate, being 
taken from aneroid readings and without any correction for tempera- 
ture. We shall, therefore, confine ourselves to reproducing the most 
important figures : 
Pressure Means anp Extremes (Marca 1898-Fers. 1899). 28 ins. + 
Jan. Feb. | Mar. | Apr. | May. | June. | July. | Aug. | Sept. Oct. Nov. Dec. | Year. 
17422 | 1-029 | 1-190 | 0-961 | 1-382 | 2°508 | 1-441 | 17418! 1-351 | 1-319 | 1-371 | 1-457 | 1-319 
| 
1°953 Pee eae i D 5 
0-894 eid sae ba i) piace 07182 | 0°319 | 0-430 | 0-792 | 0°957 | 0-138 
| | 
RANGE. 
Jan. Feb. Mar. Apr. May. | June. | July. | Aug. | Sept. Oct. Nov. Dec. | Year. 
1:98] | 2-134} 1-835 | 2-111} 1-690 | 1-831 | 2°335 
1:059 | 1-268 | 1-198 | 1°539 | 1-339 | 1-453 | 1-169 | 1-953 | 1-516 | 1-681 | 0-898 | 0-874 | 2-197 
For February and March there are two years’ observations. The 
absolute maximum, 30°335, on June 11, 1898, and the absolute 
minimum of 27°965 on March 2, 1899, both values reduced to 32° 
(but not so the means). The correction for gravity, which has not 
been applied, is about + 0-063 inch. The absolute range was 2°379 
inches. The mean of the monthly ranges is 1°358 inch. The means 
for the seasons are: Summer, 1°067 ; Autumn, 1°358; Winter, 1°524; 
Spring, 1'150; so we see that the great variations of pressure extend 
to beyond the parallel of 70° 8. 
The mean pressure shown by the observations cited above is 
