406 
DR. T. R. ROBINSON ON THE REDUCTION OF ANEMOGRAMS. 
Table I. — March. 
1857. 
1858. 
1859. 
1860. 
1861. 
1862. 
1863. 
s. 
Vel 
l6'*50 
11*15 
20*35 
13*57 
17*70 
1 1'*85 
15*40 
Mean 15*19 
to 
Dir 
20 ° 
27° 
32° 
27 0 
27° 
30° 
21 ° 
Mean 26 ° 
S.W. 
Hours... 
107 
115 
98 
131 
276 
92 
209 
Sum 1028 
s.w. 
Vel 
14*90 
9'*3l 
15*70 
16'*27 
14'*25 
13*18 
13*00 
Mean 13*80 
to 
Dir 
73° 
68 ° 
62 ° 
67° 
67° 
69° 
65° 
Mean 67° 
w. 
Hours ... 
173 
199 
368 
193 
292 ; 
61 
209 
Sum 1495 
w. 
Vel 
9'* 7 7 
9*59 
10'*90 
10*67 
13*13 
1 O'* 1 6 
14-97 
Mean 1 1-31 
to 
Dir 
117° 
110 ° 
117° 
113° 
107° 
114° 
107" 
Mean 112° 
N.W. 
Hours... 
62 
222 
184 
__279 
89 
19 
103 
Sum 958 
N.W. 
Vel 
6*45 
7'*48 
9*30 
9*29 
8'*38 
5'*86 
6'*34 
Mean 7 *59 
to 
Dir 
172 ° 
161 ° 
147° 
151° 
149° 
153° 
156° 
Mean 156° 
N. 
Hours ... 
69 
65 
67 
70 
8 
42 
38 
Sum 359 
N. 
Vel 
8'*58 
13'*86 
12*50 
7'* 7 8 
1*50 
8 '*g 6 
6-19 
Mean 8'*48 
to 
Dir 
241° 
209° 
197° 
202 ° 
195° 
206 ° 
200 ° 
Mean 207 3 
N.E. 
Hours ... 
80 
90 
14 
18 
2 
96 
37 
Sum 337 
N.E. 
Vel 
6'-55 
1 9*75 
1 1*00 
5*00 
8'*68 
1 1*30 
6*61 
Mean 9 *84 
to 
Dir 
264° 
233° 
255° 
245° 
249° 
236° 
243° 
Mean 246° 
E. 
Hours... 
98 
28 
7 
23 
19 
248 
18 
Sum 441 
E. 
Vel 
1 1*58 
4-80 
24*50 
7*50 
20*50 
1 1 '*31 
12'*39 
Mean 13*23 
to 
Dir 
274° 
279° 
282° 
272 ° 
285° 
304° 
289 ° 
Mean 284° 
S.E. 
Hours... 
64 
5 
6 
4 
6 
74 
36 
Sum 195 
S.E. 
Vel 
13*71 
12*00 
Q '*00 
18'*38 
13'*88 
11-53 
15*94 
Mean 12'*21 
to 
Dir 
350° 
352° 
341° 
346° 
334° 
351° 
Mean 346° 
S. 
Hours ... 
91 
20 
26 
50 
112 
97 
Sum 396 
Maximum ......... 
49'-5 
50’ 
58' 
54' 
43'*2 
57 ’ 
40' 
Hours >25' 
45 
39 
49 
35 
18 
9 
55 
Sum 250 
Hours of 0 
3 
5 
1 
4 
12 
4 
1 
Sum 30 
Table I. — April. 
S. 
Vel 
12'*38 
9'*88 
14*1 1 
11 '*23 
8'*67 
13*37 
14'*90 
Mean 12'*08 
to 
Dir 
36° 
42° 
24° 
19° 
23° 
25° 
28° 
Mean 28° 
S.W. 
Hours... 
67 
125 
116 
92 
61 
181 
203 
Sum 845 
S.W. 
Vel 
9*86 
7-50 
11*72 
1 4-06 
5'*49 
12'*45 
12*13 
Mean 10*39 
to 
Dir 
. 740 
61 ° 
62 ° 
64° 
61 ° 
63° 
66 ° 
Mean 64° 
W. 
Hours... 
65 
76 
150 
50 
33 
131 
183 
Sum 688 
W. 
~Vel 
8'*73 
7'*38 
7'*29 
8'*86 
5'*33 
9*38 
10*70 
Mean 8'*15 
to 
Dir 
114° 
117° 
116 ° 
103° 
115° 
110 ° 
112 ° 
Mean 112° 
N.W. 
Hours ... 
115 
65 
54 
111 
126 
42 
98 
Sum 6 l 1 
N.W. 
Vel 
6'*79 
6*00 
6'*20 
8'*64 
5'*27 
6*53 
9'*25 
Mean 6 *93 
to 
Dir 
154° 
164° 
157° 
163° 
155° 
136° 
157° 
Mean 155° 
N. 
Hours... 
60 
73 
93 
119 
78 
69 
55 
Sum 547 
N. 
Vel 
5'*29 
5*92 
6-68 
13'*28 
6'*30 
6'*30 
7*50 
Mean 7'*18 
to 
Dir 
201 ° 
197° 
206 ° 
200 ° 
202 ° 
199° 
184° 
Mean 198 ° 
N.E. 
Hours... 
49 
59 
89 
46 
175 
83 
2 
Sum 503 
N.E. 
Vel 
8'*20 
13*98 
15'*28 
6-47 
6'*79 
6-36 
o'-oo 
Mean 8 * 13 
to 
Dir 
251° 
255° 
250° 
247° 
248° 
241° 
Mean 213° 
E. 
Hours... 
126 
84 
153 
57 
107 
22 
Sum 549 
E. 
Vel 
12'*47 
16-78 
16*04 
8'*73 
9*52 
3*55 
8*64 
Mean 10'*82 
to 
Dir 
286° 
288° 
284° 
290° 
284° 
292 ° 
302° 
Mean 289°*5 
S.E. 
Hours ... 
113 
153 
49 
100 
98 
45 
28 
Sum 586 
S.E. 
Vel 
14' *73 
16*43 
14-60 
10*40 
13'*58 
13*01 
13*05 
Mean 13*55 
to 
Dir 
335° 
335° 
346° 
338° 
333° 
339° 
343° 
Mean 338° 
S. 
Hours... 
102 
81 
15 
75 
40 
88 
78 
Sum 479 
Maximum 
45'*5 
57' 
46' 
34' 
23*5 
36' 
58' 
Hours > 25' 
17 
27 
43 
5 
0 
24 
40 
Sum 156 
Hours of 0 
26 
108 
10 
24 
5 
21 
6 
Sum 200 
