364 DR BREWSTER on the Register of the Thermometer kept 



As such a plan could only be carried on with effect at a mi- 

 litary station, Leith Fort was considered the most eligible. Ap- 

 plication was therefore made to Colonel THACKERAY, command- 

 ing the Engineers, and to Colonel YOUNGHUSBAND and Mr 

 STREET of the Artillery ; and, as these gentlemen entered warm- 

 ly into the scheme, preparations were made to begin the register 

 on the 1st of January 1824. A large and accurate thermometer 

 was constructed by Mr ADIE for the purpose, and it was placed 

 in a situation as free as possible from all disturbing causes. Its 

 height above the level of the sea is 25 feet, and its distance from 

 the sea 200 yards. 



The register commenced on the 1st day of January 1824, 

 and has been regularly and zealously carried on by the non-com- 

 missioned officers of the Fort for two complete years. The 

 observations themselves are recorded in the two Folio volumes 

 now submitted to the Society, and they may justly be regarded as 

 possessing a high value, not only from the scientific results 

 which they afford, but as being the only complete series of hourly 

 observations which have been made in any part of the world *. 



In reducing these observations, Mr FOGGO junior of Leith 

 computed all the hourly, monthly, and annual means for the year 

 1824, and Mr CHRISTOPHER BELL made the same calculations 

 for 1825. These Mean Results are given in the following 

 Tables. 



* Since this was written, we understand that similar observations, suggested by 

 the present series, are now carrying on at Toulon and at Montreal, the last of 

 which will possess a peculiar interest. The first example of this class of observa- 

 tions having been set in Scotland, we may be here allowed to express a hope, that 

 similar hourly registers will be established by learned Societies both in Europe and 

 America. 



