398 Meteorological Observations for March loo*. 



METEOROLOGICAL OBSERVATIONS FOR MARCH 1831. 



Gosport: Numerical Results for the Month. 



Barom. Max. 30-443. Mar. 31. Wind N.E. Min. 29-213. Mar. 6. Wind W. 

 Range of the mercury 1-230. 



Mean barometrical pressure for the month 29-906 



Spaces described by the rising and falling of the mercury 7*943 



Greatest variation in 24 hours 0-605. Number of changes 16. 

 Therm. Max. 58. March 27. Wind S. Min. 32. March 23. Wind E. 

 Range 26. Mean temp, of exter. air 46'98. For 30 clays with in ^ 46'56 

 Max. var. in 24 hours 18 0> 00. Mean temp, of spring-water at 8 A.M. 48-84 



De Luc's Whalebone Hygrometer. 



Greatest humidity of the atmosphere, in the evening of the 2nd .... 96 

 Greatest dryness of the atmosphere, in the afternoon of the 19th... 51 



Range of the index 45 



Mean at 2 P.M. 67-0. Mean at 8 A.M. 75-6. Mean at 8 P.M. 77'2 



of three observations each day at 8, 2, and 8 o'clock 73*3 



Evaporation for the month 2-40 inches. 



Rain in the pluviameter near the ground 1-770 inch. 



Prevailing wind, West. 



Summary of the Weather. 



A clear sky, 4J; fine, with various modifications of clouds, 11 ; an overcast 

 sky without rain, 10; rain, 5^. Total 31 days. 



Clouds. 

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



15 6 25 1 17 18 18 



Scale of the prevailing Winds. 



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

 H 4| 3| 2 4i 5 6J 3| 31 



General Observations. The first part of this month was wet and windy ; 

 the latter part was dry, with great changes in the temperature of the at- 

 mosphere, and frequent strong equinoctial gales, which on several occa- 

 sions were blighty. The general mildness of the weather the last two 

 months, has made the spring nearly a fortnight earlier than that of last 

 year. From the 2nd to the 16th instant a quick budding and leafing of 

 the trees were observed ; but the cold northerly and easterly gales nearly 

 suspended these operations of nature during the latter part of the month. 

 In the mornings of the 10th, 18th, 19th, 20th, 23rd, 24th, 25th, and 28th, 

 hoar frost appeared in the grass fields before sunrise, and there was some 

 ice on the ground in the morning of the 24th. 



In the evenings of the 13th and 14th the inosculation of passing nimbi 

 produced lightning and thunder. In the morning of the 24th from 8 till 

 12 o'clock, there were frequent falls of snow, sleet and hail. 



The atmospheric and meteoric phenomena that have come within our 

 observations this month, are four meteors, four auroras boreales, lightning 

 on two evenings and thunder on one ; and seventeen gales of wind, or days 

 on which they have prevailed, namely, three from the North-east, three 

 from the East, two from the South, five from the South-west, and four 

 from the West. 



LUNAR ECLIPSE. On the 26th the moon rose about East by North, very 

 nearly half eclipsed, at 5 h 28 m P.M. mean time here; but the red haze in 

 and several degrees above the eastern horizon, prevented the earth's shadow 

 from being well defined on her disc. 



The 



