1897.] 



BEN NEVIS OBSERVATORY. — DEPTH OF SNOW. 



471 



DEPTH OF SNOW. 



Inches. 



In this table the depth of snow lying on the summit of Ben Nevis on the 1st and 15th of 

 each month is given from the opening of the Observatory in 1883 till July 1903, and also 

 the maximum depth recorded each year with the date of its occurrence. Mean values are 

 given for the first ten years, for the second ten years, and for the whole period of twenty 

 years. 



During the first winter, 1883-84, the depth was measured at the Thermometer Stand 

 12 yards from the nearest part of the Observatory buildings, but for the rest of the time 

 at a post standing near the centre of the flat part of the hill top, over 20 yards from any 

 obstruction. It was selected as the position most free from accumulations of drifted snow, 

 and therefore as a place showing the results of the snowfall influenced only by melting, 

 evaporation, and loss from wind blowing away loose snow. Every winter drifts gather to 

 much greater depths in more sheltered parts of the hill top. The entries on Nov. 1st and 

 15th, and on Dec. 1st, 1883, are approximate only. 





Oct. 



Nov. 



Dec. 



Jan. 



Feb. 



Mar. 



Apr. 



May 



June 



July 



































Maxi- 

 mum. 



Date. 













































15 



1 



15 



1 



15 



1 



15 



1 



15 



1 



15 



1 



15 



1 



15 



1 



15 



1 



15 











1883 



_ 



[201 



T401 



T601 



80 



70 



80 



107 



105 



114 



114 



113 



105 



117 



120 



80 



55 



3 



_ 



141 



May 



8 



1884 



1884 



_ 







5 



33 



46 



57 



66 



122 



119 



122 



136 



135 



128 



134 



124 



87 



55 



/ 



142 



April 



3 



1885 



1885 



31 



34 



23 



32 



44 



44 



54 



85 



86 



85 



92 



85 



122 



104 



92 



94 



63 



30 



- 



123 





10 



1886 



1886 



_ 



_ 



_ 



_ 



13 



43 



46 



35 



39 



44 



44 



50 



49 



67 



51 



15 



- 



- 



- 



69 





28 



1887 



1887 



- 



- 



- 



18 



46 



52 



46 



43 



52 



48 



56 



56 



61 



67 



61 



36 



23 



- 



- 



71 



May 



6 



1888 



1888 



_ 



_ 



_ 



14 



7 



21 



33 



37 



44 



44 



50 



47 



51 



53 













57 



April 



24 



1889 



1889 



_ 



_ 



_ 



3 



11 



23 



24 



65 



66 



69 



69 



82 



88 



92 



70 



26 



- 



- 



- 



96 





25 



1890 



1890 



7 



_ 



22 



8 



9 



13 



10 



42 



38 



35 



44 



54 



56 



58 



36 



30 



- 



- 



- 



59 



May 



4 



1891 



1891 



_ 



_ 



_ 



28 



41 



50 



52 



57 



68 



69 



70 



66 



57 



64 



52 



30 



- 



- 



- 



74 



March 



9 



1892 



1892 



23 



20 



8 



14 



27 



25 



26 



41 



54 



58 



62 



60 



55 



34 













66 



» 



17 



1893 



10 Yrs.' 

 Mean 



h 



7-4 



9-3 



18-2 



31-1 



38-7 



42-8 



57-8 



67-4 



68-5 



72-3 



74-9 



77-9 



78-4 



61-9 



43-5 



22-8 



8-8 



0-7 



89-8 



April 



16 



Mean 



1893 



3 



14 



21 



20 



27 



49 



50 



85 



94 



108 



125 



110 



94 



91 



96 



92 



71 



17 



_ 



127 



March 



13 



1894 



1891 



_ 



_ 



35 



20 



18 



26 



26 



33 



33 



37 



43 



47 



53 



43 



6 



- 



- 



- 



- 



54 



April 



11 



1895 



1895 



_ 



_ 



13 



25 



33 



35 



34 



42 



40 



43 



52 



74 



68 



71 



34 



- 



- 



- 



- 



76 



March 



28 



1896 



1896 



- 



17 



10 



- 



15 



19 



33 



35 



37 



33 



35 



44 



50 



72 



77 



45 



- 



- 



- 



80 



May 



7 



1897 



1897 



- 



- 



- 



14 



24 



25 



39 



32 



52 



77 



70 



69 



73 



70 



77 



58 



22 



- 



- 



"\ 



March 

 May 



1 



15 



j-1898 



1898 



_ 



_ 



_ 



4 



_ 



11 



27 



42 



50 



51 



55 



60 



60 



59 



47 



40 



_ 



_ 



_ 



67 



April 19-23 



1899 



1899 













30 



30 



52 



57 



55 



58 



60 



89 



73 



56 



41 



- 



- 



- 



89 





15 



1900 



1900 



16 



_ 



19 



19 



12 



29 



33 



43 



44 



57 



58 



59 



87 



61 



51 



1 



- 



- 



- 



91 





16 



1901 



1901 



_ 



_ 



_ 



_ 



19 



36 



40 



42 



43 



44 



48 



59 



59 



51 



54 



35 



14 



- 



- 



62 





4 



1902 



1902 



- 



- 



- 



6 



9 



15 



36 



42 



43 



56 



70 



116 



113 



111 



121 



77 



40 



6 



- 



125 



May 



18 



1903 



10 Yrs.' 



Mean 



}» 



31 



9-8 



10-8 



15-7 



27-5 



34-8 



44-8 



49-3 



56-1 



61-4 



69 '8 



74-6 



70 2 



61-9 



38-9 



14-7 



2-3 



- 



84-8 



April 



14 



Mean 



20 Yrs.' 

 Mean 



J4-0 



5-2 



9-6 



14-5 



23-4 



33-1 



38-8 



51-3 



58-4 



62-3 



66-8 



72-4 



76 2 



74-3 



61-9 



41-2 



18-8 



5-6 



0-4 



87 '3 



» 



15 



Mean 



