at Leith Fort every Hour of the Day in 1824 and 1825. 381 



In some instances, meteorological registers have been kept, 

 in which the thermometer has been observed only once a-day. 

 These registers may now be rendered useful, by means of the 



Results deduced from Mr COLDSTREAM'S Observations in 1822 and 1823. 



Deviations from the 

 Hours. Mean Temp, of the day. 



5 and 5 + o!fl05 



6 ... 6 0.445 



7 ... 7 0.574 



8 ... 8 0.580 



9 ... 9 0.674 



10 .. 10 0.207 



11 ... 11 0.170 



12 ... 12 0.106 



1 ... 1 +0.385 



2 ... 2 + 0.385 



3 ... 3 +0.840 



4 ... 4 + 1.018 



The law of the deviations in this table is very regular, particularly when we con- 

 sider that the observations were made only on twelve days in the year. 



Results deducedfrom Professor DEWETI'S Observations. 



MARCH 1816. APRIL. JULY. OCTOBER. JAN. 1817- 



There is an error in Professor Dewej's mean of 11 p. M. i it should be 34.92, in place of 38'.ft2. 



