E. Loomis—Contributions to Meteorology. 251 
in general for the 14 cases in which the pressure of 31-0 inches 
was maintained for at least two successive days, the position of 
the high center on the last day did not differ greatly from its 
position on the first day. In No. 1 the high center did not 
fluctuate greatly in position for eight days, but apparently 
advanced a little toward the south and west. No. 2 continued 
for ten days, and on the last day the center was found at the 
same station as on the first day. No. 4 remained stationary 
for five days; No. 12 stationary for two davs; No. 18 for 
three days; Nos. 17, 26, 33 and 386 stationary for two days; 
No. 6 moved slightly toward the south and west; No. 10 
moved slightly toward the south and east; No. 380 continued 
for seven days and apparently moved a little toward the north 
and east; No. 31 also appeared to move a little toward the 
north and east. We thus find that in the 14 cases in which 
the pressure of 31:0 inches was maintained for at least two suc- 
cessive days, in eight of them the center apparently made no 
progress; in three cases there was a slight movement toward 
the east, and in three cases a slight movement toward the west; 
in two cases there was a slight movement toward the north, 
and in four cases a slight movement toward the south. The 
facts all indicate that these high areas had no very distinctly 
marked progressive movement. 
The mean diameter of these high areas measured in a direc- 
tion from north to south (which was generally the shortest 
diameter) is 55 degrees of a meridian, or about 8800 English 
miles. The mean diameter in an Hast and West direction is 
71 degrees of a meridian, or about 4900 English miles; and if 
we had measured the actual extent of the isobar 30:0 inches 
near a parallel a little south of the high center, we should have 
found considerably larger dimensions. 
The low temperature attending these high areas is quite 
remarkable, the mean temperature from the 74 cases over 
Huropasia being —18° Fahr.; and the observations were taken 
at 7 A. M. Washington time, which for the center of Kuropasia 
is near the warmest part of the day. Column 7th of Table I 
shows how much the thermometer at each station was de- 
pressed below its mean height for the given time and place. 
The average of the numbers in this column is —19° F., which 
is considerably less than for like cases in the United States ; 
but this appears to be mainly due to the fact that in Central 
Asia the thermometer is almost uninterruptedly low at this 
season of the year. There were however several cases in which 
the thermometer was but slightly below its mean height, and 
there were two cases in which the thermometer was slightly 
above the mean. In Table III, I have given all the cases in 
which the depression of the thermometer below its mean height 
