Sessional_Paper_1906 — Page 171

Sessional Papers 議政定例兩局文件 All

Square

Number.

89

Table I,-Continued.

Meteorological Observations entered in 10° Squares from 1893-1905 inclusive.

Jau.

Feb. March. April. May. June. July. August. Sept. Oct. Nov.

Dec.

92

88

174

93

74

132

3333

82

131

39

19

31

25

38

65

77

10

27

5

28

37

88

73

174

137

69

118

115

94

71

63

87

104

77

98

74

38

34

30

162

75

95

101

187

00

118

123

69

100

81

72

127

91

144

96

2263

2081

2183

2091 2419

2384

2464

2327

2148

2364

2175

2110

97

965

978

1161

1016

1016

J129

1111

1092

1115

1164

1179

1089

98

318

291

298

324

389

385

417

419

401

404

401

363

127

293

109

181

148

138

174

200

207

212

209

169

138

129

263

135

206

190

182

222

239

285

252

271

205

179

129

293

165

282

266

218

270

255

331

290

294

290

239

130

821

619

829

719

848

846

956

955

745

873

873

801

131

623

595

610

666

670

732

793

913

622

680

642

565

132 1943

1760

2306

2687

2986

3050

3345

3072

2774

2854

2711

2033

133

129

137

164

186

.189

113

144

176

150

29

163

312

245

287

349

318

359

372

420

328

363

329

275

164

478

326

461

514

461

581

578

599

543

517

458

403

165

531

362

477

486.

565

619

627

631

598

561

516

460

166

158

142

170

154

208

228

255

183

249

203

189

181

167

19

17

25

67

92

131

180

167

107

76

62

20

168

1

169

170

199

86

200

13

201

202

203

1-::3:;:

4

14

62

94

131

106

29

12

12

12

81

7

14

14

:

115

115

98

135

12

7

10

2

318

1

21

15

319

55

43

64

27

6

13

320

15

26

52

56

49

100

:སསནཱམཤྩ

I

2

::སསྐཤ

116

114

29

8

22

1

19

3

7

2

30

11

33

66

31

36

70

47

33

321

6

61

47

79

49

70

61

74

84

70

103

70

322

124

64

85

109

143

140

133

147

169

129

161

128

323

592

353

481

349

332

820

40.5

361

357

333

448

458

324

572

408

320

211

132

168

285

269

407

552

634

543

325

502

403

490

590

521

617

793

853

863

681

309 466

326

1

***

23185 20599 23434

23385 24449 25457 .27442

2725825195 26594 25538 22992

፡፡

9. As stated in the Instructions for making Meteorological Observations, etc.," meteorological instruments forwarded by observers who regularly send their Registers to the Observatory, are verified here free of cost. During the past year 4 thermometers were verified. In addition several hundred barometers and aneroids on board ship were com- pared with our standard.

10. In 1905 the number of transits observed was 374. The axis of th transit instru- ment was levelled 176 times, and the azimuth and collination errors, whii are less liable to variation, were determined 35 times by aid of the meridian mark. Durin Mr. PLUMMER'S absence on leave since 8th March, these observations have been inade by M. FIGG.

The Standard Sidereal Clock by Dent was cleaned on November 30th. The other clocks have had no alterations effected during the year.

The errors of the Time-ball are given in Table II. The ball is not dropped on Sundays nor on Government holidays. There were no failures during 1905. The ball was not hoisted on six occasions, viz. :— on March 20th and 27th on account of thunder- storms; on April 17th the line was out of order, the earth connection in the Police basin having parted; on August 30th a strong gale was blowing; and on August 31st and September 1st the line was under repair owing to damage caused by the gale of 30th August. The ball was dropped successfully 292 times in 1905. The probable error was in January 0.17, in February 0.85, in March ± 0.56, in April ± 0.33, in May0.16, in June± 0.19, in July± 0.25, in August ± 0.17, in September ±0.10, in October

± 0.13, in November ± 0.11, in December ± 0.14.

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