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XXVII. Results of the Thermometrical Observations made at 

 Leith Fort, every Hour of the Day and Night, during the 

 whole of the Years 1824 and 1825. By DAVID BREWSTER, 

 LL.D. F. R. S. Lond. & Sec. R. S. Ed. Corresponding Mem- 

 ber of the Academy of Sciences of Paris, &c. 



(Read January 23. 1826J 



J.N the year 1820, I had occasion to suggest to the Royal So- 

 ciety the propriety of establishing Registers of the Thermome- 

 ter in various parts of Scotland. 



In a country embracing so many varieties of soil, climate and 

 elevation, and extending over nearly six degrees of latitude, it 

 was an object worthy of a public body to determine the Law of 

 the Distribution of Temperature, even if such a subject had not 

 possessed a separate interest in relation to the Horticulture and 

 Agriculture of the Country. The Society did not hesitate in 

 adopting this suggestion, and many intelligent individuals were 

 found, who undertook to observe the thermometer twice a-day, 

 and to measure occasionally the temperature of Springs and 

 Wells. During the first year, viz. 1821, nearly sixty Meteoro- 

 logical Journals were regularly kept in different parts of Scot- 

 land. The number diminished considerably in subsequent years ; 

 but, notwithstanding this diminution, there is now in our posses- 

 sion a rich series of observations during five complete years, 

 the results of which are nearly ready to be submitted to the 

 Society. 



