Meteorological Journal for August. 239 



Numerical Results for the Month. 

 Inches. 

 R /Maximum 30-35, Aug. 18th— Wind S.W. 



tfarometei | Miniraum 29 . 605 Ditto 2 5th— Wind S. 



Range of the mercury . . 0*75. Inches • 



Mean barometrical pressure for the month 29*979 



for the lunar period ending the 4th inst. . 29*955 



for 17 days, with the Moon in North declin. 30-006 



for 13 days, with the Moon in South declin. 29-904 



Spaces described by the rising and falling of the mercury 4*150 



Greatest variation in 24 hours ............. 0*280 



Number of changes 21* 



rp. ; '- ... 4 Maximum 83°, Aug. 1st-— Wind E. 



Inermometer < ■«*-. . _, t^ * ni ™t- i \tt 



(Minimum 51 Do. 11th — Wind W, 



Range . . 32 



Mean temp, of the external air 67*47 

 for 31 days with the | „, 



Sun in Leo j 



Greatest variation in 24 hours 22-00 

 Mean temp, of spring water 1 



at 8 o'clock A.M. ... J ° ° 



De Luc's Whalebone Hygrometer. 

 Degrees. 

 Greatest humidity of the air . 98 in the evening of the 23d. 

 Greatest dryness of ditto . 



40 in the aftern. of the 22d 



58 [ & 27th * 



51*5 



59-9 



65*1 



Range of the index 

 Mean at 2 o'clock P.M. 



at 8 o'clock A.M. 



— — at 8 o'clock P.M. 



of three observations each 1 



day at 8, 2, and 8 o'clock J 



Evaporation for the month 4*60 inch. 



Rain in the pluviameter near the ground . 1*52 



Rain in ditto 23 feet high 1*39 



Prevailing wind, S.W. 



Summary of the Weather. 

 A clear sky, 5|; fine, with various modifications of clouds, 

 18; an overcast sky without rain, 4| ; rain, 3. — Total 31 days. 



Clouds. 



Cirrus. Cirrocumulus. Cirrostratus. Stratus. Cumulus. Cumulostr. Nimbus. 



26 17 29 1 26 18 13 



Scale of the prevailing Winds. 

 JN. N.E. E. S.E. S. S.W. \V. N.W. Days. 

 2 3 2 4^ 5 10 2 2£ 31 



A METEORO- 



