Meteorological Journal for Jan. 1826. 159 
Numerical Results for the Month. 
Inches. 
Maximum 31°51, January 17th—Wind S. 
Minimum 29°54, Ditto  6th—Ditto N.E. 
Range of the mercury. . 0°97. _ Inches 
Mean barometrical pressure for the month...... 29980 
—— for the lunar period ending the 8th inst.. . 29-693 
for 14 days, with the Moon in North declin. 29°671 - 
for 16 days, with the Moon in South declin. 29°715 
Spaces described by the rising and falling of the mercury 3°550 
Greatest variation in 24 hours......... € SMR Se 0°340 
Number of changes «26 ee eee eee eee 21 
_.§ Maximum 49°, January 31st—Wind S.W. 
A hermnometer ; Minimum 17 Ditto” 14th—Ditto  E. 
Range 2 2s ee ee BD 
Mean temp. of the external air 35°56 
for 29 days with the : 
Sun in Capricornus .. . tes 
Greatest variation in 24 hours 17°00 
Mean temp. of spring water Y 50.19 
at 8 o'clock A.M. ... 
De Luc’s Whalebone Hygrometer. 
5 Degrees. ° 
- Greatest humidity of the air . 93 in the evening of the 30th. 
Greatest dryness of ditto ... 59 in the afternoon of the 9th. 
Range of the index ......- 34 
Mean at 2 o’clock P.M. ... 74°0 
at 8 o'clock A.M. ... 80°1 
at $8 o'clock P.M. ... 78°9 
of three observations each ee 
day at 8, 2, and 8 o’clock \ 
Evaporation for the month .....-+:- 1-000 inch. 
Rain in the pluviameter near the ground . 0°890 
Rain in ditto 23 feet high. ...... CREO 25 
Prevailing winds, N.E. 
A Summary of the Weather. 
A clear sky, 5; fine, with various modifications of clouds, 
10; an overcast sky without rain, 12; foggy, 1; rain, 3.— 
Total 31 days. 
_ Barometer 
Clouds. 
Cirrus. Cirrocumulus, Cirrostratus. Stratus. Cumulus. Cumulostr. Nimbus. 
ll 8 Q7 1 9 20 13 
A Scale of the prevailing Winds. 
N. NE. E. SE. S. SW. W. N.W. * Days. 
a. 16) See ae ea LSE 
A METERORO- 
