114 



REPORT — 1894. 



calculated, with the result that on clear days the diurnal range of tempera- 

 ture is only very slightly in excess of that of foggy days. But in summer 

 the difference between the mean coldest and warmest hour is l°'l ; but 

 on clear days the difference is 2°"9, or nearly three times greater. 



The further prosecution of this inquiry and examination of the 

 cyclones and anti-cyclones of North-Western Europe will engage the 

 attention of your Committee next year, when a large portion of the time 

 of Dr. Buchan and Mr. Omond will be given to this work. 



Table III. — Showing at the Be)b Nevis Observatory the Mean Hourly 

 Variation of Pressure, in tho^isandths of an inch, duritiy clear days. 

 The minus sign means under the average. 



Table TV. — Showing at the Ben Nevis Observatory the Mean Hourly 

 Variation of Pressure, in thousandths of an inch, during days of fog or 

 mist. The minus sign shows the means under the average. 



