468 



MR J. Y. BUCHANAN ON THE 



foggy weather in the spring half, there being a well-marked minimum in May. The 

 months of August and especially September are rich in continuous foggy weather, and 

 this accounts for the very bad reputation of the mountain among tourists. The month 

 which figures in our lists with the maximum of foggy spells is November, the 

 maximum of clear spells falls in June. 



The distribution of the spells of clear and of foggy weather in the months of 

 different years is worth attention. In January there were no spells of twenty-four 

 hours' clear weather in the six years, 1889 to 1894 (inclusive). Id March, May, June, 

 and July, there is one year without a spell of clear weather ; in February, April, 

 August, and September, there are two years; in October and November, three; and 

 in December, five years without a spell of clear weather. With regard to the spells of 

 foggy weather of three days and upwards, we find only one year where they were 

 awanting in January. In March, April, September, November, and December, there 

 are two years ; in June and August, three years ; in February, July, and October, four 

 years ; and in May, six years where they were awanting. 



Adding up the total number of hours of clear weather and days of foggy weather 

 considered, we find that they make 681 and 747 days respectively, or a total of 1428 

 days out of 4748 days contained in the thirteen years, or, roughly speaking, one-third. 

 Hence, out of the thirteen years we can make up four years in which the weather was 

 either continuously clear or continuously foggy in the sense of our specification of these 

 classes of weather. 



Table giving the Number of Minutes after Ch'eenwich Mean Noon when it is Local Apparent Noon 



at Ben Nevis at Different Dates. 



Date. 



Minutes. 



Date. 



Minutes. 



Date. 



Minutes. 



Date. 



Minutes. 



Jan. 1 



24 



Mar. 30 



24 



Aug. 18 



24 



Nov. 2 



3-7 



„ 3 



25 



April 4 



23 



„ 24 



23 



„ 9 



4 



„ 5 



26 



„ 7 



22 



„ 27 



22 



„ 17 



5 



„ 7 



27 



„ 10 



21 



„ 30 



21 



„ 21 



6 



„ 9 



28 



„ 15 



20 



Sept. 1 



20 



,, 26 



7 



„ 12 



29 



., 18 



19 



„ 4 



19 



„ 28 



8 



„ 15 



30 



., 24 



18 



„ 7 



18 



„ 30 



9 



„ 20 



31 



„ 30 



17 



„ 9 



17 



Dec. 2 



10 



„ 24 



32 



May 15 



16 



„ 12 



16 



,- 4 



11 



„ 29 



33 



25 



17 



„ 15 



15 



„ 7 



12 



Feb. 1 



34 



June 3 



18 



„ 17 



14 



,, 10 



13 



„ 11 



34-5 



,, 9 



19 



„ 20 



13 



,, 12 



14 



„ 19 



34 



„ 15 



20 



22 



12 



„ 14 



15 



27 



33 



„ 21 



21 



„ 25 



11 



„ 16 



16 



Mar. 2 



32 



., 2.5 



22 



., 30 



10 



„ 18 



17 



„ 7 



31 



,. 30 



23 



Oct. 3 



9 



„ 21 



18 



„ 10 



30 



July 2 



24 



„ 5 



8 



„ 23 



19 



„ 15 



29 



„ 12 



25 



„ 11 



7 



„ 24 



20 



„ 17 



28 



„ 18 



26 



„ 13 



6 



„ 26 



21 



„ 20 



27 



Aug. 1 



26 



„ 19 



5 



„ 28 



22 



., 25 



26 



„ 12 



25 



„ 27 



4 



„ 30 



23 



„ 28 



25 















