46S 



BEN NEVIS OBSERVATORY. — LOG-BOOK. 



[1897. 



Aug. 8. — Summit clear arid air dry almost all day. 

 Some detached cum. -fog below chiefly to N., and E. in 

 morning. Raven seen at 14 h . 



Aug. 9.— Thin mist or fog on summit and banks of fog 

 all around during the day. Summit clear and sky cloud- 

 less at night. Lunar corona at midnight. 



Aug. 13. — Mist and showers of rain till 20 h ; clear 

 thereafter, but cum.-fog around below and at times 

 passing over summit also. Lightning seen at 17 h 

 21 m . 



Aug. 23. — Summit clear, but sky cloudy and fog 

 below, chiefly to E. and S. till 10 h . Thin mist or fog 

 during the rest of the day. Snow-bunting seen at 7 h . 



Sept. 7. — Summit frequently clear of fog and air 

 slightly dry. Lunar coronas and a lunar fogbow seen 

 at night. 



Sept. 8. — Summit clear, 

 early morning the W. coast 

 Jura to S. of Skye. Lunar 

 from 20 h till 22 h . 



Sept. 9. — Summit clear, 

 and late at night. Air exceptionally clear to W. Outer 

 Hebrides very distinct in evening. Lunar fogbow and 

 corona at 2 h and a lunar halo at 21 h . Cirrus clouds 

 lying S.W.-N.E. at 20 h ; at 21 h they lay W.S.W.-E.N.E. 



Sky cloudless till 8 h . In 



lights were seen from S. of 



coronse and fogbows seen 



Sky cloudless in morning 



Sept. 10. — Summit clear, 

 quickly this morning with 

 visibility was 5 ; at noon 1. 

 16 h . 



Sept. 11. — Summit clear 



Thick haze came 

 westerly Aviud. 



on very 

 a westerly wmcl. At 4 h 

 Solar halo seen at 15 h and 



and thick haze all around 



below, with fog here and there on top of haze till 16 h . 

 Thick fog or mist thereafter. 



Sept. 20.— Mist till 4 h . Clear thereafter till 17 h . In 

 evening the clouds to W. and N.W. gradually thickened 

 and lowered, capping hills. This thick cloud gradually 

 spread eastwards and enveloped summit at and after 

 18 h , as mist with heavy drizzling rain at night. At 

 17 h the number of dust particles per cent, was 200: at 

 23 h it was 0. 



Sept. 30. — Sky cloudless almost all day. Stratus fog on 

 hills all round, rising occasionally and flowing over 

 summit. 



Oct. 1. — Continuous fog all round below about 4000 ft., 

 rising and enveloping summit after 5 h . Clear again after 

 16 h and remaining clear for the rest of the day, clouds 

 hanging low and patches of fog lying among hills all 

 round. Aurora was observed at 20 h . 



Oct. 2.— Clear till 8 h . Mist the rest of the day. 



Oct. 3. — Two snow-buntings were seen near Observatory 

 door at 6 h . 



Oct. 4.— Fog at l h and 3 h . Clear the rest of the day. 

 Fog on hills and passing over summit at times in the 

 evening. A solar halo was observed at 16 h and a lunar 

 corona at 19 h . 



Oct. 13.— Clear from 5 h till 10 h . Fog till 18 h , and 

 clear thereafter. Lunar coronae were seen at 19 h , 20 h , 

 21 h and 23 h , and a lunar fogbow at 20 h . 



Oct. 14. — Fog lying over Lochs Eil, Laggan and 

 Lochy all morning, dispersing in afternoon. Lunar coronae 

 at l b , 2 h , 4 h and 5 h . Weasel tracks were seen at Cairn 

 this morning, and raven seen flying about E. end. 



Oct. 15. — Strong E.S.E. winds, increasing in force to 

 that of a strong gale at noon, veering to S., and moderat- 



ln valleys all 

 towards mid- 

 top this after- 

 forenoon, but 



valleys 

 Clear 



ing in force towards evening. The Tower Screen was in 

 use from 10 h till 13 h . 



Oct. 20. — Mist till 4 h . Summit clear thereafter, and 

 sky cloudless after 18 h . Some fog about hills to S. and 

 W., and slight haze in valleys in the evening. Solar halo 

 at 15 h . 



Oct. 21. — Sky cloudless all day. Thin haze in valleys 

 to E., S.E. and S.W. A raven was seen at 7 h . 



Oct. 22. — Cloudless. A slight haze in valleys all day. 



Oct. 23. — Cloudless again to-day. Haze iu valleys all 

 morning and fog forming on hills all round in afternoon, 

 occasionally passing over summit at night. 



Oct. 24. — Sky cloudless. Fog on hills all round below 

 and sinking into valleys towards midnight. Three 

 ptarmigan were seen on MLean's Steep at 15 h 20 m . 



Oct. 25. — Clear and cloudless all day. Some fog on 

 hills to E. and S. all day and haze 

 round. Clouds forming above horizon 

 night. Raven and snow-bunting seen on 

 noon. 



Oct. 26.— Sky slightly clouded all 

 cloudless again in evening. Haze in valleys all day, 

 getting much thicker towards night, and at midnight the 

 summit was enveloped in fog. 



Oct. 29. — Clear almost all day. Thick haze in 

 all round and patches of fog on hills to S. and E. 



Oct. 30. — Mist and heavy drizzle all forenoon, 

 at and after 16 h , showing continuous fog below to about 

 4000 ft., rising towards night and enveloping summit 

 after 22 h . 



Nov. 1. — Clear and air slightly dry most of the day. 

 Fog on bills to S. and haze in valleys all round. Lunar 

 coronaj at 20 h and 22 h . 



Nov. 2. — Summit clear. Sky almost cloudless and air 

 dry all day. Haze lying low in valleys and small patches 

 of fog on hills to S. and E. 



Nov. 3. — Absolutely cloudless all day. Hoar frost in 

 valleys in early morning. The air has been very clear and 

 dry throughout the day, the humidity ranging from 30 to 

 37. 99 per cent, of the possible sunshine was recorded 

 to-day. Three ravens were seen flying about the summit 

 in the afternoon. 



Nov. 4. — Cloudless all day. Air very dry, the humidity 

 being as low as 28 for a few hours about mid-day. Fog 

 and haze in valleys all day. 



Nov. 5.— Sky still cloudless and continuous fog all 

 round below, only a few of the highest peaks being seen 

 topping the fog at times during the day. Shadow of 

 Ben with glory at 8 h , and glories seen all morning. 



Nov. 6. — Clear and cloudless till 8 h , after which the fog, 

 which had been rising gradually all morning, enveloped 

 the summit, clearing a little in afternoon. 



Nov. 9. — Mist till 4 1 '. Clear most of the day there- 

 after. Fog on hills to E. and S. and thick haze in valleys. 

 Lunar corona at 20 h . 



Nov. 10.— Clear from 2 h till 8 h . Fog or mist the 

 rest of the day. Lunar halo at 4 h and 5 h . 



Nov. 15. — Fog till 8 a.m. Summit clear and sky 

 slightly clouded with cirro.-c. till 21 h . Fog thereafter. 

 Glories seen in N. cliff at 9 h . 



Nov. 16. — Fog or mist all day except at 2 b , 13 11 and 

 15 h ; at these hours sky was overcast with hard packed 

 cirro-stratus. A lunar halo seen at 2 h . 



