166 REPORT—1896. 
Meteorological Observations on Ben Nevis.—Ieport of the Committee, 
consisting of Lord McLaren, Professor A. CkuM Brown (Secretary), 
Dr. Jonn Murray, Dr. ALEXANDER BucHaN, and Professor R. 
CorELaND. (Drawn up by Dr. Bucnay.) 
TuE Committee were appointed, as in former years, for the purpose of co- 
operating with the Scottish Meteorological Society in making meteorological 
opservations on. Ben Nevis. 
The hourly eye observations, carried on by night as well as by day, 
have been made without interruption during the year at the top of Ben 
Nevis ; and the continuous registrations and other observations have been 
carried on at the Low Level Observatory at Fort William with the same 
fulness of detail as heretofore. 
The Directors of the Observatories tender their best thanks to Messrs. 
A. Drysdale, M.A., B.Se., A. Russell, BSec., G. Ednie, and W. Thomson 
for the assistance they rendered as volunteer observers during the summer 
months, thus giving a greater extension than could otherwise have been 
given to the holiday time of the members of the regular observing staff, 
which it is in every way so desirable to secure. 
Table I. gives for 1895 the monthly mean pressure, mean and ex- 
treme temperatures ; hours of sunshine ; amount of rainfall ; number 
of fair days, and of days when the rainfall exceeded one inch ; the mean 
percentage of cloud ; and the mean rain-band at both Observatories ; and 
the mean hourly velocity of the wind in miles at the top of the mountain. 
The mean barometric pressures at the Low Level Observatory are reduced 
to 32° and sea level, but those at top of the Ben are reduced to 32° only. 
TasLe I. 
April May | Tune | July | Aug. | Sept. | Oct. 
1895 | Jan. | Feb. | March Nov.| Dec. | Year 
Mean Pressure in Inches. 
Ben Nevis Ob- | 25-095) 25-442: 25-031) 25°254) 25°549) 25°526) 25:287] 25-274) 25-525) 25-222) 25+166) 25038) 25-284 
servatory | | | | 
Fort Wiliiam | 29°768' 30° 
0 “617 29°819 30101 30°042) 29°771)| 29°733} 30°012! 29°802| 29°735) 29°652| 29°842 
Differences .| 4673) 4°7: 5 
7 
“S86 4°565, 4°562) 4°51b| 4°484| 4°459| 4°487| 4°580) 4°569) 4°614| 4°568 
Mean Temperatures. 
a |) So.) | | | ° ° ° ° 
BenNevisOb-| 175 187 | 247) 298) 363 | 39°9 | 382 | 412 | 483 | 272) 363 | 25:0 | 30:7 
servatory | | | 
Fort William | 33:4 | 309 | 406 | 459) 52-7 | 58-4 | 55-4 | 56-9] 586 | 43°6| 425 | 396 | 46:0 
Differences . { 149; 122 | 159 | 161 | 16-4 | 155 | 17-2 | 157 | 133] 16-4] 142 | 166] 153 
Extremes of Temperature, Maxima. 
| ete legal | | | | 
BenNevisOb-) 203 385 379) 40:7 | 5r1| 598 484 | 506 | BHD] 553 | 407 | BL1) 5x9 
servatory | | | 
Fort William | 45°5 | 480 | 51:9 63°8 | 73°0 | 74°4 69°4 | 70°3 744 | 66°2 56°1 52°8 | 74:4 
Differences .| 152] 95, 140] 23:1 | 189 | 146) 21:0| 19:7 | 145 | 12°9| 15-4 | 18-7 | 1495 
ate ° o | oo ° DE |, to Weer ° oy ifeco ° or | Po 
Ben Nevis Ob- 6-0 18 $6 | 11°6 | 19:8 | 242 ; 30°0 30'1 | 30°38 | 17°4 | 183 |] 13°9 18 
:  servatory | | | | 
| Fort William 90 89 | 266 | 29°9 | 36:0 | 357 / 443 | 444 |] 41° | 30°77 | 273 | 25°0 89 
Differences .| 30| 71/ 160/183] 16¢2| 115] 143 | J43| 12) 333] 95! m4] 74 
