248 
Proceedings of Boyal Society of Edinburgh. 
Number of Dust Particles — continued . 
Number 
& . 
Places. \ 
Date. 
Hour. 
of Par- 
ticles 
Wind. 
p<£ 
| £ 
s 
1 
State of 
the Air. 
Remarks. 
. 
per c.c. 
H 
S 
Rigi Kulm, . 
May- 
23 
10.0 a.m. 
850 
S.E. 3 
54-5 
8 
Clear. 
Some clouds below the level of 
1,100 
... 
the hill top, and on the moun- 
580 
tains to south-east. 
99 
,, 
yy 
515 
850 
... 
yf 
35 
571 
Hi 
M 
11.0 a.m. 
1,080 
3.30 p.m. 
1,036 
850 
S.E. 2 
Very clear. 
Thunderstorm to the south- 
850 
east, but distant. 
850 
Low clouds all gone. 
600 
yy 
600 
840 
4.3o’p.m. 
665 
850 
53-5 
9*5 
. 
24 
10.0 a.m. 
685 
S.E. 1 
53-5 
9-5 
Very clear. 
yy 
665 
665 
11.0 a.m. 
617 
58 
11 ’ 
fM 
' 
4.0 p.m. 
395 
, 
392 
»; 
350 
5.0 p.m. 
575 
592 
51 
8* 
25 
9.0a.m. 
532 
S.S.E. 1 
53-5 
10 
Very clear. 
Taken on the top of the moun- 
540 
tain. 
560 
580 
10.0 a.m. 
547 
Vitznau, . . 
12.30 p.m. 
585 
S.E. 3 
14 ’ 
Very clear. 
Taken at the level of the lake. 
Lucerne, . . 
” 
616 
5.0 p.m. 
616 
S.E." 3 
14” 
Very clear. 
Taken on lake side at a distance 
650 
of one mile to the windward , 
652 
of the town. 
6.30 p.m. 
1,970 
At hotel window over garden. 
26 
10.30 a.m. 
23,000 
n'o-5 
13 ” 
Medium. 
„ 
2.0 p.m. 
7,500 
N.E. 0-5 
Taken in a field about a mile to 
3.0 p.m. 
2,330 
2,400 
the windward of the town. 
2,160 
9 9 9 9 
2,750 
9 9 9 9 
3,000 
9 9 9 9 
Eiffel Tower, 
4.0 p.m. 
3,660 
29 
10.0 a.m. 
41,000 
S. 3 
Taken at an elevation of 200 m. 
10.15 a.m. 
52,000 
Taken at the top of the tower 1 
,, 
,, 
,, 
15,000 
immediately underneath the 
,, 
99 
3,300 
lantern for the electric light 
” 
;; 
” 
6,600 
104,000 
at an elevation of nearly 300 m. ^ 
” 
” 
45.400 
62,000 
22.400 
99 9 9 
11 n 
,, 
12.0 a.m. 
2,850 
aVs 
v» 
n 
226 
Heavy shower of rain. 
24,000 
Rain ceased. 
1.30 p.m. 
42,000 
S."*6 
Taken at an elevation of 200 m. 
>' 
;; 
2.15 p.m. 
56,000 
1 43,000 
Taken at an elevation of 115 m. 
Taken in the garden of the Mete- 
Paris, . . . 
» 
4.0 p.m. 
210,000 
134,000 
S.’ 4 
orological Office. 
,, 
160,000 
Mar. 
” 
15 
June 
11.30 a.m. 
92,000 
N.E. 2 
« 
London, . . 
3 
10.0 a.m. 
102,000 
Taken at window in Victoria 
99 
yy 
140,000 
Street. 
» 
12.0 a.m. 
88,000 
W. 2. 
Taken in a garden, the wind 
