250 REPORT—1 899. 
Meteorological Observations on Ben Nevis.—Report of the Committee, 
consisting of Lord McLaren, Professor A. Crum Brown (Secre- 
tary), Sir JOHN Murray, Professor CopELAND, and Dr. ALEXANDER 
Bucnan. (Drawn up by Dr. Bucway.) 
THE Committee was appointed as in past years for the purpose of co- 
operating with the Scottish Meteorological Society in making meteorologi- 
cal observations at the two Ben Nevis Observatories. 
The hourly eye observations, made by night as well as by day, which 
are a speciality of the Ben Nevis Observatory, being as yet not attempted 
at any other first-class meteorological observatory in the world, were 
made with complete regularity by Mr. Angus Rankin and his assistants. 
The health of the staff at the high level Observatory continued good, 
and the heavy work of the Observations has been carried on without the loss 
of a single hour’s observations. The Directors desire to express their very 
cordial thanks to Messrs. J. S. Begg, M.A., P. S. Hardie, W. A. Bartlett, 
Andrew Hunter, and T. Kilgour, for the invaluable assistance they 
rendered as volunteer observers, thus enabling them to give the members 
of the staff the relief they ereatly stood in need of, Special thanks are 
due to Mr. Begg for the great service he rendered in taking at no small 
personal risk the place of observer at Fort William during the time of 
the influenza there, which was of an exceptionally severe character. 
The observations at the intermediate station on Ben Nevis, 2,200 feet, 
were again undertaken by Mr. T. 8. Muir, M.A., assisted by the late 
Mr. Campbell Irons. These observations, together with those made in 
1897, are being discussed by Mr. Muir, ‘under the superintendence of 
Mr. Omond. “Arrangements were made for the resumption of these 
valuable observations “during the current holiday season. The observa- 
tions will be made on the lines indicated in your Committee’s Report of 
last year. 
The principal results of the observations of 1898 are detailed in 
Table I. 
TaB_eE I. 
1898 | Jan. | Feb. |March| April | May | June | July | Aug. ) Sept. | Oct. | Nov.| Dec. | Year 
Mean Pressure in Inches. 
Ben Nevis Ob- | 25-439) 25:097) 25:262) 25:207) 25°273) 25°413) 25°547| 25° 394) 25°473) 25-274 25-180} 25°149/25-309 
servatory | | 
Fort Wiliam | 30:049) 30°063) 29°866) 29-958) 29-779) 29-735) 29°716/29°858 
feast 29: 896, 29°770 | 29°830, 29°914 
Differences .| 4°610| 4°623| 4°634) 4-563! "4557 4501| 4516] 4°472| 4°485| 4°505| 4-505| 4-567 4°549 
Mean Temperatures. 
. o, | °o ° ° ° | ° ° ae ° Ce, 
Ben NevisOb-| 29°3 | 224 | 23:4 | 29°38 | 313 | 388 | 41:0 | 40°9 | 42°6 | 35:7 28°9 | 28:2 | 32-7 
servatory | | 
Fort William | 44-2 | 39°5 | 40°71 | 47-1) 48:2 | 55°1 | 56:5 | 57-0 | 55:2 | 506 | 42:7] 43:8 | 48-4 
Differences . | 14°9 | 17-1 | 16-7 | 17:°3 | 16:0 | 16°3°| 15:5 | 16-1 | 12°6 | 149 | 13°8 | 15°6 | 157 
Extremes of SOMITE Maxima. 
Jo co [MRS oinlltitordieeo |’ bo Des or| ol Yt gti ronal aes ° 
Ben NevisOb-| 39:0 | 37-9 | 37:1 | 41°3 | 51°2 | 52°1 | 55°9 | 55°3 | 62°6 | 57* 43°9  39°3 | 62°6 
servatory | | | | 
Fort William | 53:0 ; 52°41 51°7 | 60°6 | G43 | 72:0 | 746 | 76:9 | 79-7 | 73:8 | 5599 | 53:2 79°7 
Differences .| 14°0 | 14:5 | 14:6 | 19°3 | 13°1 | 19°9 | 187 | 21°6 | 17-1 | 6 | 12°0 | 18:9 | 171 
