1899.] 



BEN NEVIS OBSERVATORY. — LOG-BOOK. 



183 



June 11. — Fog all round below in forenoon. No fog 

 below since 13 1 '. Snow has now all thawed away from 

 gauge, but there is still a considerable amount on summit, 

 varying from 1 to 10 feet near the edge of the cliff at 

 first and second gorges. 



June 12. — Air remarkably clear, the Outer Hebrides 

 being seen most of the day. Fog over Locheil at l h , 

 spreading round to N. and S., and in valleys all round at 

 3 h . After 7 h fog began to break up and disperse, and by 

 1 4 h there was no fog below. Thick haze at 7 h . 



June 13. — Sky cloudless or nearly so all day. Some 

 fog on hills from N. to E. in early morning. Slight haze 

 all day extending to about 6° above horizon. 



June 15. — Thick haze in valleys all round. Sky 

 almost cloudless till 16 h . Cloudy since. Low lying fog 

 in distance between Eigg and Rum in the evening. 



Jane 16. — Cloudless or almost so till 21 h . Overcast 

 or fog since. Fog in valleys all round till 10 h , dispersing 

 at ll h . No fog below at 12 h . Thick haze all round 

 most of the day. 



June 17. — Solar halo seen at 16 h . 



June 18. — Some visitors who came up this morning for 

 sunrise, report having seen three or four flashes of 

 lightning, but they heard only one peal of thunder, 

 between 22 h and midnight. No lightning seen on 

 summit, but at 22 h 50 m strong earth currents on 

 telephone. 



June 24. — Summit clear from 9 h till ll'\ and again 

 after 22 h , and sky almost cloudless. Detached fog on 

 hills around and passing at times. Lunar coronas seen 

 at 23 h . 



June 25. — Sky cloudy with cir.-c. and cir.-s. at l h and 

 2 h , and detached fog on hills. Fog or mist since. A 

 lunar halo seen at l h . 



June 27. — Fog on hills from N.E. to E. and S.E., and 

 passing occasionally over summit during the forenoon. 

 Fog on summit since 13 h , at times very thin. Dew 

 forming on roof of Observatory at l h . 



July 4. — Fog all round to level of summit in forenoon, 

 and passing at times till 17 h . No fog below since. 



July 5. — Thick banks of fog around all day, rising to 

 about 1000 feet above summit and passing frequently 

 over hilltop during the day. Slight haze in distance to 

 E. in forenoon. 



July 6. — Fog on hills all round to about 4000 feet, at 

 times rising to level of summit and passing frequently 

 over hilltop during the day. Solar halo seen at 15 h . 



July 10. — Fog all round to about 4000 feet, breaking 

 up at times in various directions into cumulus, but 

 reforming again into fog. 



July 16. — The difference between dry and wet bulbs 

 indicating air dry at L3 b is very doubtful, mist at the 

 time being decidedly wetting. 



July 22. — Sky cloudless or almost so till 6 h , fog off 

 and on summit since, and sky apparently overcast. Thick 

 haze all round in evening. Fog hanging about hills all 

 day. Lunar corouse seen at l h . 



July 23. — Stratus fog in valleys in early morning, but 

 rising during forenoon, and covering hills all round and 

 passing frequently over summit. 



July 27. — The cat caught a mouse (vole V) in the 

 scullery this evening. 



July 30. — Fog on hills below all clay, rising at times 



and passing over summit. The cat caught a mouse in 

 coal-cellar in afternoon. 



July 31. — Sky cloudless till 4 h , but thin fog passing 

 continually, on which were formed very fine lunar coronas. 

 Fog all round below during forenoon, dispersing in 

 afternoon, but again forming in evening to westward, 

 and enveloping summit at 23 h . 



Aug. 1. — Sky cloudless after 15 u , but fog below all 

 round. 



Aug. 2. — Clear and cloudless most of the day, with 

 fog in valleys. Glory seen at 5 h . 



Aug. 3. — Clear and sunny in forenoon, with fog on 

 hills and passing over summit in evening. 



Aug. 4. — Clear and sunny all day, with thick fog all 

 round below, sinking into valleys and disappearing 

 towards evening. 



Aug. 5. — Solar halos seen from 8 h to ll h . 



Aug. 7. — Cloudy till 20 h , cloudless thereafter. Fog 

 hanging about surrounding hills all day. 



Aug. 8. — Clear and sunny all day. Thick fog all 

 round below in forenoon, rising and dispersing towards 

 mid-day. 



Aug. 11. — Cloudless or almost so all day. Fog over 

 Caledonian Canal and Locheil in early morning, dispersing 

 towards mid day. Thin haze in valleys all day. Sparrow- 

 hawk seen on summit after 10 h . 



Aug. 12. — Thin haze low in valleys all day, and a 

 narrow band of cirro.-stratus. lay near the horizon all 

 round. 



Aug. 13. — Cloudless most of the day, with thin haze 

 in valleys in forenoon, getting more dense in evening. 



Aug. 14. — Thick haze all round during the day. 

 Summit enveloped in fog at 23 h , and mist at midnight. 



Aug. 18. — Solar halo at 16 h , and a double rainbow at 5 h . 



Aug. 23. — Sky almost cloudless all day. Some patches 

 of fog lay in valleys in early morning, but disappeared in 

 forenoon, giving place to a thin haze which gradually got 

 more dense in evening. 



Aug. 24 — Thick haze all round all day. 



Aug. 25. — Thunder and lightning after 16 h . St 

 Elmo's Fire from 16 h to 17 h . Two ravens and two hawks 

 on and about summit at 5 h . 



Sept. 1. — Sky cloudless till 4 h , with fog on hills and 

 passing over summit at times, enveloping summit at 5' 1 , 

 clearing again at ll h , and sky cloudy the rest of the day. 

 A number of snow-buntings were seen about summit 

 throughout the day. 



Sept. 13. — A solar fog-bow and glories were observed 

 after 10 1 '. 



Sept. 16. — Fog or mist till 10 u . Clear and sunny the 

 rest of the day, with thick fog all round below, and passing 

 over summit at times. Fog-bow and glory at ll h . 



Sept. 17.— Thunder and lightning from 18 h to 19 h . 



Sept. 18.— St Elmo's Fire, thunder, and lightning were 

 observed from 3 h till 5 h . The telephone bell kept ringing 

 at intervals of 14 m to 15 m while thunder-storm lasted. 



Sept. 19. — St Elmo's Fire seen at 21 h and between 

 22 h and 23 h . 



Sept. 20.— St Elmo's Fire at l h and 6 h . 



Sept. 23. — St Elmo's Fire heard on kitchen chimney 

 and on roof of tower at 9 h . Fresh snow lying 9 inches 

 deep at snow post, and wreaths round Observatory and 

 Hotel varying from 1 to 3 feet deep. 



