Bombay, hourly during the years 1858 1859, and 1860, and 1866 to 1870 inclusive.
Duklum, during the years 1826 to 1830 inclusive.

RELATIVE PREVALENCE OF WINDS FROM THE DIFFERENT POINTS OF THE COMPASS.

Spring
Summer
Autumn
Winter
The year
January
February
March

April
May

505.5 261
570 306.9
28.2 27.3 53
810 484 1366.5
1724.8 644.2 1325.5
3133 1462.4 2983.5
5708 1285.9 2636.4
4739.8 1318.9. 2302
2538.7 1057.5) 1092

668.5

326.5 253.5

69

26

10

7

3

12

30

79

238.5

64.8 126

54.2 61.8

107.8 118 569 513 327.5 548.2 615.2 210.5 1236.21316 763.8 974.9 1243.9 572.9 660.5 1108 476.1 356.2 234.9 498.3

104.3 45.2

176.2

230.7 461.5

278.2, 168.5

354.4

378.1 182

52.4 100 199 268 800 33.2 36 59.4 199.5, 177 117 56 107.5 168 93 404 289.7 351.6 212.9, 248.2 590.7 1156.8 1648.5 1111 2529.6 1413 3900.7 1640.8 1182.1 989.6 1294.1 879 November 3444.8 1633.9 8423.2 3049.3 2145.9 948.5 213 418 3972.3 1563 6160.7 2854.1 1967 570.5 196 71 4077.5 1792 1549.8 438.2 759.2 837.3 814.3 406.6 173.3 200.7 472.5 426.4 560.5 1381 5940.5 3680.2 6326 3259.812613.6 4938.3 3918.73094.9 3160.6 2408 14420.1 4167.8 11099.1 4489.5 4318.9 1619.5 629.3 256 The year 24996.9 9420.3 25735 10292.4 9557.3 6932.7 10544.7 6750.8 12307.1 10689.3 34393.7 86630.7 81469.1 45110.3 93155.6 42394.6

689.1 1272.2 354.7 1443.2 3715.3 2669.5

700 1192.5 1036.5 1354 922
43.8 92.5 315.7 500 2397.8 1504.9
2216.5 5196.9 5449.9 3742 7295.8 3425.3
167.5 335.6 1432.5, 1426.6 12620.9 7946
62.8 99 48.4 235 1526.8 2027.8 13651.3 6031.1
73
281.4 492.6 2010.6) 5336 15319.8 5408.6
934.3 650 678 1493 3059.6 6906.9 16221.8 4496.1
1363.7 1511.7 3092.9 4655.1 7807.8 6897.9 7156.2 1243.4
6049.2 3905.5 11483.3, 17307.8 7858.9 3562 2229.7 314

1399.9 2048.2 10161.8 32914.9 19094.6 2455.4 475.2 63
231
2970.7 8014.612289.9 5787.4 2855.8 653.7
296
16.3

593.2 578.4 5118.2 20194.8 22887.9 3953.8 1825.8
1000.2 1374
574.8 348.1
145
93.4
30.9 519.4 2068.1 6380.2 4809.8
38
19
79.2 226 6657.2 1662 7009.6 6466.9
2371 2223.7 4052.3 6640.7 12878 19140.8 38697.8 11148.1
8042.3 6532.1 26763.3 70417.5 49841.4 9971.2 4530.71 608
1720 1815.5 3283 8875.9 15123.2 10881.9 16645.3 10194.5
173.8 118 295.1 796.6 3626.5 5116.4 33281.8 20444

187.5 568.5 462 1504.2 3188.3 932.2 701.3 355.7 66.2

830.4 2313.9 3026.4, 7409.3 4731

2 Dr. Buchan, in his treatise on the winds, gives the following directions of the resultants for the different months at this place, viz. : January N. 10° W., February N. 24° W., March N. 44° W., April N. 61° W., May N. 80° W., June S. 3° W., July S. 65° W., August S. 75° W., September N. 89° W., October N. 19° W., November N. 3o E., December N. 14° W.

Direction of
resultant.

Ratio of result'nt to sum of winds.

Monsoon influences.

Direction.

Force.

(Nos. 37 to 43.) Bay of Bengal, China Sea, and Pacific Ocean west of long. 180°. Computed from obervations for an aggregate period of over ten years, collected and classified from the logs of numerous sailing vessels, at the United States Naval Observatory, under the direction of Capt. M. F. Maury, Superintendent.

Addendum to Zone No. 15.

Observations on the Indian Ocean, calculated by the Meteorological Institute of the Netherlauds, under Captain Cornelissen's direction. Given in percentage of the entire number of

The data for the study of the winds of this zone consist of observations made at over 22 stations on land, for an aggregate period of 46 years 1 month; and at sea for 26 years 5 months. The distribution is as follows:

Computed from observations for an aggregate period of 2706 days, collected and classified, from the logs of the different sailing vessels, at the United States Naval Observatory, under the direction of Captain M. F. Maury, Superintendent.

Cartagena, New Granada, by Captain John Parsons, on board the ship Scorpion, from April 23 to June 11, 1854 inclusive, and published in No. 1 of the Meteorological Papers of the London Board of Trade.

Caraccas, Venezuela, by A. Avellado, during the year 1868.

Colonia Tovar, Venezuela, by Augustus Fendler, in the months of June, August, September and
October, 1856. It seems probable that the record embraces only the exceptional surface winds, the
predominant ones from easterly and northerly points being generally omitted. The record of the
motion of the clouds is more complete.

Porto Cabello, Venezuela, by Mr. Litchfield, from June, 1843, to February, 1844, inclusive.
68 May, 1875.

Barbadoes, by Mr. Dawson, from May, 1841, to January, 1842, inclusive; also another series for a period of six years, 1853 to 1859.

Port of Spain, Trinidad, by Geological Surveyors, for October, 1856, to February, 1857, inclusive.