Meteorological Observations made in the Isle of Man, 249 



fluel Vor, 



Average duty of rotatory engines, 17-97 millions. 



* Watt's double engines. 



•[• The steam, after passing through a high pressure, escapes 

 into a Watt's single engine. All the other reciprocating engines 

 are Watt's single. 



Art. XI. — Abstract of Meteorological Observations made in 

 the Isle of Man, from 1826 to 1829, inclusive. By Robert 

 Steuart, Esq. Receiver-General of the Isle of Man. Com- 

 municated by Dr Hibbert. * 



A general state of the weather from January 1826 to Decem- 

 ber 1829. Thermometer (Fahrenheit) always out, on a 

 northern exposure. Taken at 9 o'clock a. m., and at 11 

 o'clock p. M. 



1826. 



Highest state of Thermometer, 

 Lowest, - - - - 



Note. — With reference to the " Wind," the prevailing point for the 

 day is taken. If ani/ rain, snow, or sleet, falls during the day, it is not con- 

 sidered as a fair day. 



* A former series of Mr Steuart's observations, from 1822 to 1825, will 

 be found in Vol. v. p. 231 of this Journal. 



