1896-97.] T. S. Muir on Observing Station on Ben Nevis. 289 
this nature ; and, besides, the period was so short, that of wind- 
pressure, at least, little can he said. 
Table YII. — 
Total Rainfall. 
BNO, 
= 6 ‘530 inches. 
BN < 10 
= -592 inches. 
10, 
. =5-938 „ 
10 <FW, . 
CO 
o 
rH 
II 
FWO, 
. =4-230 „ 
Bn< FW, . . 
= 2*300 ,, 
So that, while the total precipitation at the summit was only tliree- 
fiftlis of an inch more than at the middle, the latter exceeded that 
at Fort-William by nearly If inches. 
Table VIII. Aggregates for 12 Hours. — Thrice rain fell at 
the summit and not at the other places, but the amount was 
inconsiderable. 
Six times there was rain at the top and the middle, but none at 
the base. 
On one of those occasions the amount was the same at both 
places ; on the remainder the amount was greater at the summit, 
showing that the rain was confined to the upper half of the moun- 
tain. 
Seven times the precipitation for 12 hours was greater at Fort- 
William than at the summit ; at six of those the middle station was 
actually intermediate, and on the seventh no rain fell at all. 
From 9 h. on the 12th to 9 h. on the 13th the rainfall at the 
middle station was greater by about -J of an inch and y 3 y of an inch 
respectively than that at the summit and Fort-William. A glance 
at the Table shows that the barometer was lower than at either 
of the other two places, while the summit barometer read higher than 
that at the base, and the intermediate temperate was more irregu- 
lar than at the other stations. 
From 9 h. to 21 h. on the 16tli the rainfall at the middle was 
less than at the other two places ; but the wind was gusty. 
Lastly, during the night of the 22nd there was a very heavy 
rainfall on the upper half of the mountain — ly 1 ^ inch at the top 
and nearly 1 inch at the middle, but only a little over yy of an 
inch at Fort- William. From Table II. it will be seen that the 
sharp rise of the base barometer was not imitated by the other 
two, at least not to the same extent, and that the temperature at 
all three places rose towards evening. The wind at the top till 
