MR MOSSMAN ON THE FROST OF 1895. 



533 



excess being 17°'6 at 9 a.m. on the 19th ; and this is the largest amount by which the 

 temperature on Ben Nevis has been higher than that at Fort- William since the 

 Observatories were opened. On these four days (17th to 20th February) an anti- 

 cyclone lay directly over the British Islands, while cyclonic disturbances were located 

 in the south-west of Spain and the north-east of Scandinavia and Finland. Ben 

 Nevis was evidently in the anti-cyclonic down-draft of air warmed dynamically in its 

 descent from a great height. The air was very dry on the summit during most of 

 these days. The following tables give the relations of temperature and some other data 

 for Ben Nevis Observatory : — 



Difference of Temperature between Summit and Base of Ben Nevis at each Hour of the Day. 

 Heavy type signifies that the summit had the higher temperature, italic type the reverse. 





1 



. 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 

 25S 



19 



20 



21 



22 



9 o 1 Mid- 

 i6 1 night. 



1895 

 February 14 . 



23-2 



23-8 



23-0 



22-6 



22-2 



2V5 



22-0 



22-0 



38 -4 



22-2 



22 -e 



23-5 



24-0 



W2 



25-4 



26-0 



25-2 



25-7 



25-1 



25-1 



25-6 



24'9 26-6 



]5 . 



20'9 



20-6 



20-8 



19-3 



15 -2 



19-4 



20-1 



20-3 



20-4 



20-3 



21-0 



21-3 



22-0 



2V2 



21-4 



21-8 



20-9 



21-1 



20-9 



20-2 



19-8 



2V0 



2V1 \ 23-1 



16 . 



21-8 



20-9 



17'9 



15-9 



15-0 



13-5 



12-4 



13'4 



14-2 



16-2 



15 '7 



18-1 



20-6 



19-4 



19-5 



18-6 



17-0 



12S 9-9 



6-9 



6-9 



5-4 



5-3 



3-1 



17 . 



1-9 



12 



OS 



18 



2-8 



3-5 



4'2 



33 



3-9 



2'8 



0-4 



2-2 



5-4 



5-8 



8-8 



8-9 



6-5 



2-6 ' 0-2 



07 



3'8 



5-0 



61 



83 



18 . 



97 



11 "2 



12-0 



12-0 



13-8 



14-0 



13-5 



12-4 



14'8 



15 4 



110 



57 



17 



0-9 



2-6 



4-9 



3-0 



0-8 4-5 



6-6 



9-9 11-4 



131 



10-5 



19 . 



W2 



10-9 



121 



157 



14'0 



13 



13'4 



15-2 



176 



16-0 



118 



lO'O 



4-4 



5-6 



01 



V8 



0-7 



0-8 37 



6-9 



81 10-3 



11-5 



12-5 



20 . 



12 4 



140 



14-2 



141 



14'6 



133 



127 



137 



14-9 



9-9 



3-0 



3-6 



7-2 



9-9 



12-4 



11-3 



1V0 



9:5 8-9 



8-3 



7-0 6-3 



5-7 



6-2 



Ben Nevis Observatory. Mean Daily Values. 





Barometer 

 at 32°. 



Temperature. 



Relative 

 Humidity. 



Wind 

 Direction. 



Wind Velocity. 

 Miles per hour. 



Visibility 

 (0 to 5). 



1895 

 February 14 



inches. 

 25-459 



10-2 



% 

 98 



S.E. 



45 



0-5 



15 



•659 



12-6 



100 



E.S.E. 



46 



1-2 



16 



•856 



20-2 



67 



S.E. 



38 



3-5 



17 



•841 



27*6 



25 



S.E. 



28 



4T 



18 



•727 



31-2 



22 



S.E. 



13 



4-0 



19 



•705 



32-1 



24 



N. 



5 



4-0 



20 



•709 



27-1 



68 



N. 



13 



1-7 



