158 Meteorological Observations /or December, 1826. 



Weather. — The number of clear natural days, or cla3's on which 

 no clouds have appeared, as stated in the table, is three more than 

 last year ; and the number of rainy days three less : the number of 

 fair days with clouds is 9^ less, and the number of overcast days 

 without rain, IO5 more than last year. The year has been distin- 

 guished for a seasonable winter, a warm and healthy spring, a hot 

 and fruitful summer, and a humid and rather a sickly autumn 

 from the great and rapid changes in the temperature and state of 

 the atmosphere. Even in the winter and autumn, only a sufficient 

 quantity of rain fell to keep the ground in a growing condition. 

 From the close of March to the end of August only 7| inches fell 

 here, which with the hot summer months, caused a drought, ma- 

 terially shortened the grass, stunted the barley generally, and on 

 high and light soils the wheat, but not the fruit crops : the produce 

 of the earth, therefore, met with advantages and disadvantages. So 

 dry a period we have not experienced since the year 1818; and the 

 annual depth of rain at the ground coincides nearly with the dry 

 year 1820. 



METEOROLOGICAL OBSEKVATIONS FOR DECEMBER 1826. 

 Gosport. — Numerical Results Jbr the Month. 



Barom. Max. 30-50 Dec. 28. Wind N.W.— Min. 29-18 Dec. 1. WindW. 

 Range of the mercury 1-32. 



Mean barometrical pressure for the month 29-849 



. • for the lunar period ending the 28th instant .... 29-781 



■ — for 15 days with the Moon in North declination . . 29-685 



. . for 15 days with the Moon in South declination . . 29-877 



Spaces described by the rising and falling of the mercury . . . 5-560 

 Greatest variation in 24 hours 0-560. — Number of changes 25. 

 Therm. Max. 57° Dec. 10 & 11. Wind S.— Min. 32° Dec. 21. Wind N. 

 Range 25°.— Mean temp.of exter. air 46°-43. For 29 days with in f 45-91 

 Max. var. in 24 hours 15°-00 — Mean temp, of spring water at 8 A.M.52°-68. 



De Luc's Whalebone Hygrometer. 

 Greatest humidity of the air in the morning of the 7th . . . 100° 

 Greatest dryness of the air in the afternoon of the 4th ... 60 



Range of the index 40 



Mean at 2 P.M. 72°-5— Mean at 8 A.M. 78-4— Mean at 8 P.M. 80-9 



of three observations each day at 8, 2, and 8 o'clock . . 77-3 



Evaporation for the month 0-75 inch. 



Rain near ground 2-935 inches.— Rain 23 feet high 2-720 inches. 



Summary of the Weather. 

 A clear sky, 1|; fine, with various modifications of clouds, 9 ; an overcast 

 sky without rain, 13; foggy, ^ ; rain, 7. — Total 31 days. 



Clouds. 



Cirrus. Cirrocumulus. Cirrostratus. Stratus. Cumulus. Cumulostr. Nimbu*. 



11 3 30 11 14 18 



Scale of the prevailing Winds. 



N. N.E. E. S.E. S. S.W. W. N.W. Days. 

 3 5i 2 3 4 3 4i 6 31 



General 



