444 



Results of Makerstoun Observations, 1844. 



TABLE XL. — Hourly Means of the Estimated Extent of Clouded Sky for each Month in 1844. 



TABLE XLI. — Hourly Means of the Estimated Extent of Clouded Sky for each of the 

 Astronomical Quarters, and for the Year 1844. 



Diurnal Varvjtion of the extent of Clouded Sky. — The maximum amount of clouded sky occurs gene- 

 rallv two or three hours before noon, and minima about two hours liefore midnight and three or four hours 



