from similar impulses proceeding from positive and negative discharges?

"Or can the luminous stratifications which we obtain in a closed circuit of the secondary coil of an induction apparatus, and in the circuit of the voltaic battery, be the representation of pulsations which pass along the wire of the former and through the battery of the latter, impulses possibly generated by the action of the discharge along the wires ?"

We have appended Mr. Gassiot's remarks to the account given by M. de la Rive of his researches for the sake of comparison. It seems to us difficult, if not impossible, to accept all M. de la Rive's views, and we should like to know whether any practical electrician has succeeded in repeating the experiments by which he imagines he has proved that the dark and light spaces in the circuit resemble the good and bad conducting links of a silver and platina chain. The subject is a highly curious one, and, though we recognize M. de la Rive's great merit in this branch of science, the theory he has propounded demands further investigation. Notwithstanding the great interest and beauty of electrical pursuits, they have fallen into singular neglect amongst the cultivators of science, so that there are now comparatively few private students either in England or France who devote to them the attention they deserve. This is to be regretted, as, though much has been done, more remains to be accomplished, and, so far as apparatus goes, such excellent means were never before placed within our reach.

Day

of Month.

RESULTS OF METEOROLOGICAL OBSERVATIONS MADE AT THE
KEW OBSERVATORY.

Maximum, read at 9:30
A.M. on the following

inches

2

30 107 46-7 31.5

67 196 52-3

59 196

554

28 6 237 0, 3, 4

30-3 251 2, 0,

0

59.3

31.7 27-6

NE by N, N by E, NW.

SE by E, E by N, E by N.

000

*000

001

5

53.0

6

29-578 455 421

36.4 16.6

89 284

*025

7

553

29-491 430 35 5

47.2 S1 10, 10, 10

000

77 226

53.5

522

98 359

41.1 12.4 6, 6, 9
346 176 7, 10, 10

050

010

554

29-749 527 501

481 7310, 10, 10

497 11-810, 9, 6

*03

84 302

12

577

58.7

49-3 84 8, 10, 10
46.9 11.8

000

010

70292 62.5
67275 611

75 290

590

60.5

42.3 14.1 9, 2, 5
38.2 18.5 10, 7, 8
33-3 26-6 4, 4, 9
43.0 19.5 10, 8, 9
42.2 18.9 1, 4, 3
47.5 115 10, 3, 2
33.5 27.0

21 29.829 499 417

68 290

*00

634

22 29-745 51-4 384

75 280

570

64 250

594

24 30-358 47.9 28.7

48 167

25 30-266 53.6 41.1

51 177

26

65 275

376 258 8, 8, 3
37.4 19.6 3, 10, 10
47.5 11-910, 7, 3
396 151 3, 7, 3
340 233 1, 6, 10

*00

*00

*00

63 266
400 220 0, 7, 6
59 188 55.3 463 9010, 5, 3
79 220 49-7 39-4 10-310, 9, 7
87 228 51.2 38.1 131 9, 10, 10

Means. 29.934 48.3 38.9 74 259

NW by W, NW by W, WNW 00

W by N, W, W by N.

W, W by S, WSW.
W, NW by W, WNW.
NW, N by E, NW by N.
NE by N, NE, NE by E.

• To obtain the Barometric pressure at the sea-level these numbers must be increased by '037 inch.

00

0:30

HOURLY MOVEMENT OF THE WIND (IN MILES) AS RECORDED BY ROBINSON'S ANEMOMETER.-APRIL 1863.

Day.

Hourly

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Means.

22

17 21

17 18 24

23

11 10

12 18

14 18

666991

14 27 15

13 26 18 13 13

18

24 20 11 18 8 15 18 16 19

8 5 20 21 13 15 8 20 15 15 15
9 13 24 23 23 12 20 10 20 18 18 15
9 14 21 22 20 13 20 11 23

22

18 15 24 21 12 19 11 22 23 18 24
12 14 17 24 20 14 19 9 20 20 21 19
10 12 9 13 16 18 20 16 17 11 17 22 22 17
11 15 11 12 16 21 20 16 16 9 18 21 20 14
7 15 10 12 17 18 19 14 16
1 17 8 10 13 15

6 15

12.2

13.4

17 19 20

13.6
15.0
15'7
15'9

99812443

452

87

232 127 86 245 473 542 351 297 302 210 184 313 337 155 78 109 131 221 137 169 348 466 345 236 283 152 284 345 339 356

10.9

RESULTS OF METEOROLOGICAL OBSERVATIONS MADE AT THE
KEW OBSERVATORY.

17

59.9

...

501 111 6, 8, 10 SSW, SW by S, SW by W. 18
466 136 9, 10, 10 WSW, SW by W, SW by S.
50.5 10.5 10, 10, 3 SW by S, S by W,SW by W.
47-4 136 9, 10, 10 SW by S, SW by S, SW.
47.3 12.6

063

83 310

595

82 224 472

67 212

...

41-4 181 9, 10, 10 NE by N, E by N, NE by E. 428 44 10, 10, 10 NE by E, NE by E,NE by E. 32 85 268 527 428 9.910, 10, 10 NE by N, NE by N, N by E. 2 74 266 552 461 9.1 10, 10, 10 NE by E, NE, ENE. 217 52.8 390 13-810, 10, 6 NE by E, ENE, NE by E. 68 235 571 37-7 19-4 7, 6, 6E by N, NE by N, NE by E..000 59.9 37.0 22.9

000

68 238 558

26 30 172 48.0 35.6

65 226

58.2

410 148 7, 10, 10 N by E, NE by N, N by E. 000 37.0 21.2 10, 5, 4

N by W, E by N, NNE.

W by S, W, W by N.
NW, - W by N.

by S, W by N, W by N. 00
W by N, W, W by N.

000

1.39

To obtain the Barometric pressure at the sea-level these numbers must be increased by 037 inch.

HOURLY MOVEMENT OF THE WIND (IN MILES) AS RECORDED BY ROBINSON'S ANEMOMETER-MAY 1863.

Day.

1 23 4 5 6 7

74

30

Hourly

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Means.

234567

222221

34560

99356556

10 17 13

20 11

18 18 14

12

5555

2 25 18 11 6

16 10 12 3 2 25 20 12

8 11 9 16 7 9 16 10 19

11 16 13 11 25 10 16 19 14 14 29

9776

1

2222

1322 1 ∞ 1

25 19 11 11

30 16 10 13

3 30 13 14 18 13

5 28 11 15 25 20 10 20 12
18 20 18 10 18 12
19 8 14 11
911 32 8 17

8708

17 21 16 15 17
12 23 20 14 19 17 10 13 38 10 19 18 15 7 16 8
30

21 15 14

18 19

68

25 15 12 29 5 25 12 7 19

55

682

888

5 9 8 13

18 17 17 39 8 18 22 16
17 14 43 8 19 17 15
43 3 19 20 16 11 21
8 16 18 14 9 22 6
15 17 15 10 16

7 19 9 10 6 11 9 10

9 22 8 10 9 13

668

9 11 8 13 10

16.1

6 13 9

15.4

7542271

10.8

9.5

9.7

10.2

8.4

249 357 153 167 261 159 224 259 120 186 330 497 405 426 334353 213 278 771 267 339 368 270 176 333 140 141 142 189 155 216

53

67

11.4