[ 102 ] 



XL Journal of Meteorological Observations, made in the 

 Garden of the Horticultural Society at Chiswick, during 

 the year 1826. By Mr. William Beattie Booth, A.L.S. 



Read February 20, 1827. 



The following Meteorological Journal, is a continuation of 

 that of which an Abstract was published in the sixth volume of 

 the Society's Transactions, page 398. It embraces the whole 

 year 1826. Having been directed by the Committee, as part 

 of my duty as Principal Clerk in the Garden, to attend to 

 these matters, the observations have been made entirely by 

 myself. The Report containing the description of the in- 

 struments used in, and the general outline of the plan of the 

 observations, has been already laid before the Society, and is 

 printed immediately preceding this Communication. 



The observations were made at the three different periods 

 of the day, as stated in the Report just referred to. The 

 first, or morning observation, was taken at six o'clock in 

 the morning in summer, and at day-break in winter; the 

 second, near mid-day, that is, between noon and one o'clock 

 P.M.; and the third, usually about 9, or between 9 and 10 

 o'clock at night, but not later. For each of these periods, it 

 will be seen there are five separate columns allotted. The 

 first on the left-hand, contains the true height of the Baro- 

 meter, corrections having been made at each observation, for 

 the difference of temperature of the mercury, as well as for 

 the capacity of the cistern and capillary action ; the second 



