190 



BEN NEVIS OBSERVATORY. — LOG-BOOK. 



[1894. 



Height not altered. Severe southerly gale in evening with 

 great drift. Tower screen in use from 18 h to 21 h . 



Nov. 14. — At 23 h 48 m strong earth current in telegraph 

 cable, one heavy click. At same time thunder and light- 

 ning were observed at Low Level Observatory — none here. 



Nov. 15.— At 2 h , 3 h , 5 h , 6 h , 7 h and 8 h , tower screen was 

 used. Faint earth current in telegraph cable at 3 h 22 m . 

 St Elmo's Fire was heard at ll h and again at 13 h 45 m . 



Nor. 19.— Thermometer box shifted at 3 b 18 m . Height 

 above snow not altered. 



Nov. 23. — Aurora seen after top cleared at 20 h . Single 

 arch with no streamers and very dark space below. Variable 

 in brightness at different hours. Thermometer box shifted 

 at 23 h 15 m . Height above snow not altered. 



Nov. 24. — Aurora continued visible faintly till 3 h and 

 was again seen at 19 h . 



. Nov. 26.— Fog lay on hills to S. and E. till 4 h , after 

 which it rose and covered Ben Nevis also till 7 U ; it then 

 sank and lay as a thin layer of loose cum.-fog on all the 

 hill tops round for the rest of the day, the sky above being 

 cloudless. At l h the dry and wet bulb read 30°-9 and 

 27° '1, yet within 3 minutes after they were read a wave 

 of fog blew over the hill. Faint aurora seen at 23 h and 

 midnight. 



Nov. 30. — After 10 h the fog sank below the summit 

 and lay over the hills round at about 4000 feet all day. 

 Air very dry on summit all afternoon. 



Dec. 1.— Fog lay among the hills at from 3000 to 3500 

 feet till 8 h , after which it rose, and by 10 h was blowing 

 across the summit. A faint aurora was seen at 23 b . 



Dec. 2. — Fog lay on the hills at 4000 feet in early 

 morning, gradually sank down in the course of the day, 

 and by the evening was lying as haze and low fog in 

 the valleys. The Ben shadow and earth shadow were well 

 seen at sunset. 



Dec. 3. — At 3 h it was seen that fog lay over Loch 

 Lochy, along Caledonian Canal valleys and on Lochiel. 

 The shadow of Ben Nevis and earth shadow were well 

 seen at sunset. 



Dec. 4. — Thick haze mingled with patches of low-lying 

 fog in the valleys all day. It lay thickest over the Lochs 

 and on the Moor of Rannoch. 



Dec. 5. — At l h clouds were noticed above N.E. horizon^, 

 the first for some time. Haze and fog lay in the valleys 

 till 5 h , after which they rose, and there was thick fog on 

 summit all the rest of the day. About 16 h 30 m a weasel 

 was seen at scullery window yellowish white in colour with 

 black tip to tail. 



Dec. 8. — Thermometer box shifted at 8 h 20 m . Height 

 above snow not altered. At 9 h a rainbow was seen, and at 

 14 h some badly defined glories. A lunar halo was seen at 

 19 h and 22 h and a lunar corona at 23 h . 



Dec. 1 1 .—Thermometer box shifted at 23 h 1 3 m . Height 

 above snow not altered. 



Dec. 12. — A lunar halo, faint and badly defined, was 

 seen at 3 h . 



Dec. 15.- Thermometer box shifted at 1 6 h 18 m . Height 

 above snow not altered. At 23 h and midnight fine needle- 

 shaped crystals of snow were falling. 



Dec. 16.— Thermometer box shifted at 13 u 10 m . Height 

 above snow not altered. A faint solar halo was seen at 

 13 h and 14 h ; no colour in it. 



Dec. 19.— Thermometer box shifted at 12 1 ' 20 m . Height 

 above snow not altered. 



Dec. 20.— Thermometer box shifted at ll h 15 m . Put 

 one stage higher on stand. At ll h the fog sank down 

 leaving sky clear and lay on hills at 4000 feet or more till 

 15 h after which it rose over Ben Nevis also and turned to 

 wet mist at night. Some glories seen at 14 h . 



Dec. 22. — The tower screen was used at 4 h , o, 4 being 

 added to its readings that being the difference between the 

 Stevenson and tower thermometers at 3 h and at 5 h . 



Dec. 24. — All day the summit seemed to be near the 

 top of the mist, and when it did sink below the top it 

 covered all the hills round. W. Stewart who came up the 

 hill with mails reported that he got into the mist at about 

 700 feet, and that it was continuous all the way above 

 that. 



Dec. 27.— Thermometer box shifted at 19 h 15 m . Height 

 above snow not altered. 



Dec. 31 .—Thermometer box shifted at 1 5 h 25 m . Height 

 above snow not altered. 



I 



