276. Results of a Meteorological Journal 
TEMPERATURE.—The mean temperature of the air, consider- 
ing its wet and windy state, and the decrease in the average, of 
May, June, and July, are strikingly great, heing more than 24° 
higher than that of last year, and equal to the warm year 1815 
within 1-8th of a degree. ‘This arises chiefly from the more 
uniform temperature of the days and nights during the last five 
months, Contrary to the course of the season, the mean tem- 
perature of February was three degrees lower than that of January, 
and the mean of April nearly equal to that of May. September 
was more than 14° warmer than July; and November within 
11-20tks of a degree of the meanof May. The mean tempera- 
tures at 8 A.M. and 8 P.M. without doors, coincide with each 
other within about 1-6th of a degree; but they deviate from the 
annual mean 21°, which is more than usual. 
The mean temperature at S A.M. and 8 P.M. within doors, 
is 21° higher than that without at the same hours, and only 
3-5ths of a degree higher than the annual mean. 
The annual mean temperature of spring water, as ascertained 
by about eight observations every month at 8 A.M., is rather 
more than one degree under the annual mean temperature of the 
air without doors. By these observations it appears that the 
ground did not arrive at its evaximum heat till the autumnal 
equinox, which was one month after the maximum heat of the 
air; and that the greatest monthly mean temperature of spring 
water was in October. How far this will agree with the usual ~ 
time of the greatest mean monthly heat of the ground, subse- 
quent years’ observations will determine, as we have no com- 
parison to make by a reference to former years, but suspect that 
that was very late. 
The mean state of the air by De Luc’s whalebone hygrome- 
ter, is severa} degrees more towards the moisture point, than in 
the preceding years when a less quantity of rain fell. 
Winp.—The wind has been very prevalent, and it blew longer 
from the S.W. this year than from any other point of the com- 
pass. From the preceding seven years’ observations on the po- 
sition of the wind, it appears that its longest duration is from 
the South-West. Its duration from the North this year, is about - 
2-3ds of the mean for the last seven years from that point. From 
S.E. and S.W. it has prevailed one-third more than the average 
of the former years, and from these points we had most of the 
late heavy rains. The winds from the East, South, and West 
points, have respectively fallen short of their average duration 
of former years ; but those from N.W. and N.E. are nearly 
equal, By particular attention to the direct course of the modi- 
fications of clouds, we have this year been enabled to furnish ad- 
ditional proofs of the simultaneous existence of several currents 
of 
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