bad | 
~J 
METEOROLOGICAL OBSERVATIONS ON BEN NEVIS. 
Meteorological Observations on Ben Nevis.—Report of the Committee, 
consisting of Lord McLarEN (Chairman), Professor A. CRumM Brown 
(Secretary), Sic Joun Murray, Dr. ALEXANDER Bucuan, Professor 
CopELAND, and Mr. R. T. Omonn. (Drawn up by Dr. BucHan.) 
Tue Committee was appointed, as in former years, for the purpose of 
co-operating with the Scottish Meteorological Society in making meteoro- 
logical observations at the two Ben Nevis Observatories. 
At the High Level Observatory Mr. Rankin and his assistants con- 
tinued the eye-observations hourly, by day and night, for the first nine 
months of 1904. At the Low Level Observatory in Fort William the 
corresponding values were obtained from the self-recording instruments 
there for the same period. On October 1, 1904, both Observatories were 
closed, and the observations ceased. 
The health of the observers continued good. 
The Directors desire to very cordially thank the Rev. J. S. Begg and 
Messrs. H. R. Baxter, W. R. Bruce, and F. R. Lucas for their services as 
volunteer observers during the summer. 
The principal results of the observations made at the two Observatories 
from January to September 1904 are detailed in Table I. 
TasLe I, 
1904 / Jan. | Feb. | March) April | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. | Year 
Mean Pressure in Inches. 
Ben Nevis Ob- | 25°086/ 24°870| 25-293) 25-124) 25°303) 25-470) 25°463] 25°405| 25-464) — } — } — | — 
servatory 
jFort William | 29°678] 29-453) 29-937| 29°699| 29-853] 29-980) 29-941 | 29-900 29°986 — | — | — | — 
Differences .| 4592| 4583| 4644] 4°575| 4°550| 4:510| 4478, 4-495| 4522) — | — | — | — 
Mean Temperatures. 
Ben NevisOb-| 25°5 | 21°38 | 231 | 27°7 | 322 | 365 | 451) 304] 384] — | > | = | = 
servatory 
Fort William | 41-2 | 37-8 | 39°5 | 45:3 | 489 | 55:0 | 576 | 55:2| 533) — | — | — | — 
Differences. | 15°7 | 16°0 | 16-4 | 176 | 167 | 155 | 145 | 158/149, — | — | — | — 
Extremes of Temperature: Maxima. 
Ben NevisOb-| 39:0 ; 34:0 | 37°3 | 37:0} 50°3 | 55°0 | 621) 579) 508) — — — [= 
servatory 
Fort William | 51°4 | 48°0 | 51°1 | 580 | 73:1 | 744 | 75:5 | 73:0 | 675 | — — = = 
Differences. | 12.4 | 140] 13°83, 21:0 | 228 194 | 134 15:1 | 167 — — — = 
Extremes of Temperature: Minima. 
BenNevisOb-| 15:5 | 10°5 | 10°71 | 196 | 180) 276 | 321) 305) 300) — = — _- 
servatory | } | 
Fort is 28:2 | 263 | 24:5 | 329 | 36:1 | 40°3 | 444 | 394 | 381) — _ —-/|- 
Differences. | 12°7 | 15:8 | 144 | 133 | 181 | 12°7 | 12:3 8:9 ol | = _ = — 
Rainfall in Inches. 
Ben NevisOb-| 21:71| 11-41] 8°65| 26°57) 10°88) 9°35) 803) 11°69) 1315) — —-|— — 
servatory 
Fort William | 804) G14) 4°87)| 10°26) 651| 4°97| 5:30 712) 863) — _ _ _ 
Differences .| 13°67, 5'27| 3°78, 16°31| 4:37, 4:38) 2°73) 457) 452) — _ —-{- 
Number of Days 1 in. or more fell. 
‘Ben Nevis Ob- 7 4 2 14 4 2 2 4 5 —_ -—-j- _ 
servatory | 
Fort William 0 2 0 2 1 1 1 2 3 —- _ _ —_ 
Differences . 7 2 2 be el) a 1 1 2 2 — — — _ 
