during the Quarter ending March 31, 1849. 371 



on the 26th, and still further increased 0*25 on the 27th. The 

 reading at this time was 29*91 at midnight. On the 28th it 

 decreased rapidly, and was 29*20 at midnight, being the low- 

 est in the month. The range within this month was 2*52 in- 

 ches. 



On the 2nd of March the reading passed the point 30 inches, 

 and on the 6th the highest reading in the month took place, 

 viz. SO'^tS ; after this the changes were small till the 26th, 

 the reading being above its average value. On the 27th the 

 reading decreased half an inch, and on the 28th the lowest 

 reading took place in the month, 29*18, and it remained low 

 till the end of the month. 



The reading of the barometer on February 1 1 at Aylesbury 

 was 30*369 ; at Leicester was 30*800; at Durham was 30*440 ; 

 at Whitehaven 30*62 ; at Newcastle was 30*764 ; at Exeter 

 was 30*838; at Liverpool was 30*861 ; at Truro was 30*74 ; 

 at Norwich was 30*910; and at Cardington was 30*846. 



The monthly mean values of the several subjects of investi- * 

 gationare shown in the Registrar- General's report. 



The observations have been corrected for diurnal ranges, 

 and the results are all comparable with each other. 



The observer at Southampton has kindly furnished me with 

 the following agricultural report for Hampshire, the particu- 

 lars having been supplied by John Clark, Esq., of Finsbury 

 Farm, near Romsey. 



" The weather during the quarter has been most propitious 

 for cropping. The fine dry March, followed by the gentle 

 showers of April, have benefited to a great degree both the 

 soil and cattle. Sowing is in a forward state, and young 

 wheat looks well. 



" The lambing season is over, and it is believed will prove 

 to be an average. Some strange anomalies have been preva- 

 lent. On adjacent farms no loss has been experienced in one, 

 whilst the loss both of ewes and lambs have been great in the 

 other." 



Themean of the numbers in the first column of the subjoined 

 table is 29837 inches, and this value may be considered as 

 the pressure of dry air for England during the quarter ending 

 March 31, 1849. The differences between this number and 

 the separate results contained in the first column show the pro- 

 bable sums of the errors of observation and reduction ; the 

 latter arising partly from erroneously assumed altitudes, and 

 partly from the index errors of the instruments not having been 

 determined. In most cases the sums of these errors are small. 



The mean of the numbers in the second column, for Guern- 

 sey and those places situated in the counties of Cornwall and 

 Devonshire, is 45°'2 ; for those places situated south of latitude 



2 B 2 



