158 Meteorological Summary for 1824.— Hampshire. 



thus annul the idea of the existence of a superior pressure by 

 the Moon's influence in eitlier hemisphere. I am supported 

 in this opinion from similar observations having been made 

 by Luke Howard, Esq. F.R.S., in the years 1807 and 1816; 

 as in both these years the mercury in his barometer is said to 

 have been nearly as high again as the above resuhing differ- 

 ence, while the moon was in south declination. — At some future 

 time more may be said on this subject. 



Temperature. — The mean temperature of the external 

 air a few feet from the ground this year is 1 j^-^ of a degree 

 more than that of 1 823, and is /jths of a degree higher than 

 the mean temperature for the last eight years. — Although July 

 \vas the hottest month, yet the maximum temperature did not 

 take place till the 3rd of September : it has not occurred so 

 late in the summer as this since the year 1815, and very ge- 

 nerally takes place in June, when the sun is nearly at his 

 greatest nordi declination, before or after entering the sign 

 Cancer. 



From the great quantity of rain that has fallen this year, 

 and the abundant floating vapours, the strength of the sun's 

 rays on the surface of the earth seems to have been diminish- 

 ed ; for the mean temperature of spring water has fallen short 

 of its yearly average, and for the last four years at 8 A.M. is 

 iiths of a degree less than the mean temperature of the air for 

 the same period. 



The mean state of the hygrometer this and the preceding 

 year coincides within three-tenths of a degree ; and the means 

 of the observations thereon at 8 o'clock A.M., in both years, 

 exactly agree. 



Wind. — In comparing the scales of the prevailing winds in 

 1823 and 1824, there appears to be a near accordance, ex- 

 cept in the North and North-east winds, which have blown 

 comparatively longer from these points of the compass. 



The following is the number of strong gales of wind, or 

 days on which they have prevailed this year : 



The gales from the south-west point, as usual, are nearly 

 half the number in the scale. 



Clouds. — The following is a correct scale of the clouds 

 agreeably to the nomenclature, being the number of days on 

 which each modification has appeared during the last eight 

 years, ending with ] 824. Cirrus. 



