Meteorological Journal for April. 391 
Numerical Results for the Month. 
Inches. 
Maximum 30°37, April 1st—Wind N.W. 
Minimum 29°18, Ditto12th—Wind S.W. 
Range of the mercury. . 1°19. Ticher 
Mean barometrical pressure for the month ..... . 30:010 
— for the lunar period ending the 7th inst.. . 30-040 
for 14 days, with the Moon in North declin. 30:130 
for 15 days, with the Moon in South declin. 29-950 
Spaces described by the rising and falling of the mercury 5-240 
Greatest variation in 24 hours......... i Riss! sp, 0970 
Wamber.of. chat tes... .6. sane vase ieee te 15- 
_§ Maximum 68°, April 22d.— Wind N.W. 
Thermometer ; Minimum 83” Ditto 28th—-Wind N. 
BEARS FS oN 5 Pe So as 35 
Mean temp. of the external air 51°90 
for 31 days with the 49°60 
Sun in Aries.) s"... 
Greatest variation in24 hours 23-00 
Mean temp. of spring water \ 49-05 
Barometer 
at 8 o'clock A.M. ... 
De Luc’s Whalebone Hygrometer. 
Degrees. 
Greatest humidity of the air. 96 in the evening of the 7th. 
Greatest dryness of ditto ~.. 42 in the aftern. of the 29th. 
Range of the index ...... 540 : 
Mean at 2-o’clock P.M. ... 58:1 
at 8 o'clock A.M. ... 68:0 
at 8 o'clock P.M.  .-...-.70°8 
—— of three observations each 65°6 
day at 8, 2, and 8 o’clock \ 
Evaporation for the month ..... fa i. hero Inch. 
Rain in the pluviameter near the ground . 1-00 
Rain in ditto 23 feet high. ......... 0:90 
Prevailing wind, N.W. 
Summary of the Weather. 
A clear sky, 3; fine, with various modifications of clouds, 
14 ; an overcast sky without rain, 10; rain, 3.—Total 30 days. 
Clouds. 
Cirrus. Cirrocumulus. Cirrostratus. Stratus. Cumulus. Cumulostr. Nimbus. 
17 12 29 3 24 20 12 
Scale of the prevailing Winds. 
N. NE E. S.E. §...5,W. W. N.W.. - Days, 
60 <5 See eee te! Fp 
A METEORO- 
