TABLE II.

Eccentricity, Longitude of the Perihelion, &c., &c., for Intervals of 10,000 Years, from 2,650,000 to 2,450,000 Years ago.

the glacial epoch of the Eocene period is probably comprehended within this table.

I.II.III.IV.Winter occurring in aphelion.
Number of years before a.d. 1800.Eccentricity of orbit.Longitude of perihelion.Number of degrees passed over by the perihelion. Motion retrograde at periods marked R.V.
Excess of winter over summer, in days.		VI.
Midwinter intensity of the sun’s heat. Present intensity = 1000.		VII.
Number of degrees by which the midwinter temperature is lowered.		VIII.
Midwinter temperature of Great Britain.

° ′

2,650,000

0·0053

318 40

° ′

F.

F.

2,640,000

0·0173

54 25

95 45

°

°

2,630,000

0·0331

93 37

39 12

15·4

906

26·2

12·8

2,620,000

0·0479

127 12

33 35

22·2

884

33·3

5·7

2,610,000

0·0591

158 36

31 24

27·4

862

38·3

0·7

2,600,000

0·0660

190 4

31 28

30·6

851

41·5

−2·5

2,590,000

0·0666

220 28

30 24

30·9

850

41·8

−2·8

2,580,000

0·0609

249 56

29 28

28·3

859

39·2

−0·2

2,570,000

0·0492

277 24

27 28

22·9

878

33·9

5·1

2,560,000

0·0350

305 2

27 38

16·2

902

27·1

11·9

2,550,000

0·0167

298 34

R 6 28

2,540,000

0·0192

253 58

R 44 36

2,530,000

0·0369

259 19

5 21

17·1

899

28·0

11·0

2,520,000

0·0537

283 7

23 48

25·0

871

35·9

3·1

2,510,000

0·0660

310 4

26 57

30·6

851

41·5

−2·5

2,500,000

0·0721

338 36

28 32

33·5

841

44·2

−5·2

2,490,000

0·0722

7 36

29 0

33·6

841

44·3

−5·3

2,480,000

0·0662

35 46

28 10

30·8

850

41·7

−2·7

2,470,000

0·0553

63 26

27 40

25·7

868

36·6

2·4

2,460,000

0·0410

89 13

25 47

19·1

892

30·0

9·0

2,450,000

0·0252

109 33

20 20

11·7

TABLE III.

Eccentricity, Longitude of the Perihelion, &c., &c., for Intervals of 10,000 Years, from 1,000,000 to 750,000 Years ago.

the glacial epoch of the Eocene period is probably comprehended within this table.

I.II.III.IV.Winter occurring in aphelion.
Number of years before a.d. 1800.Eccentricity of orbit.Longitude of perihelion.Number of degrees passed over by the perihelion. Motion retrograde at periods marked R.V.
Excess of winter over summer, in days.		VI.
Midwinter intensity of the sun’s heat. Present intensity = 1000.		VII.
Number of degrees by which the midwinter temperature is lowered.		VIII.
Midwinter temperature of Great Britain.

° ′

1,000,000

0·0151

248 22

° ′

F.

F.

990,000

0·0224

313 50

65 28

°

°

980,000

0·0329

358 2

44 12

15·3

906

26·1

12·9

970,000

0·0441

32 40

34 38

20·5

887

31·5

7·5

960,000

0·0491

66 49

34 9

22·8

878

33·8

5·2

950,000

0·0517

97 51

31 2

24·0

874

35·0

4·0

940,000

0·0495

127 42

29 51

23·0

878

34·0

5·0

930,000

0·0423

156 11

28 29

19·7

890

30·6

8·4

920,000

0·0305

181 40

25 29

14·2

910

25·0

14·0

910,000

0·0156

194 15

12 35

900,000

0·0102

135 2

R 59 13

890,000

0·0285

127 1

R 8 1

880,000

0·0456

152 33

25 32

21·2

884

32·2

6·8

870,000

0·0607

180 23

27 50

28·2

859

39·0

0·0

860,000

0·0708

209 41

29 18

32·9

843

43·6

−4·6

850,000

0·0747

239 28

29 47

34·7

837

45·3

−6·3

840,000

0·0698

269 14

29 46

32·4

845

43·2

−4·2

830,000

0·0623

298 28

29 14

29·0

857

40·0

−1·0

820,000

0·0476

326 4

27 36

22·1

881

33·1

5·9

810,000

0·0296

348 30

22 26

800,000

0·0132

343 49

R 4 41

790,000

0·0171

293 19

R 50 30

780,000

0·0325

303 37

10 18

15·2

907

26·0

13·0

770,000

0·0455

328 38

25 1

21·2

884

32·2

6·8

760,000

0·0540

357 12

28 34

25·1

870

36·0

3·0

750,000

0·0575

27 18

30 6

26·7

864

37·7

1·3

740,000

0·0561

58 30

31 12

26·1

867

37·0

2·0

730,000

0·0507

90 55

32 25

23·6

876

34·6

4·4

720,000

0·0422

125 14

34 19

19·6

890

30·6

8·4

710,000

0·0307

177 26

52 12

14·3

910

25·0

14·0

700,000

0·0220

208 13

30 47

TABLE IV.

Eccentricity, Longitude of the Perihelion, &c., &c., for Intervals of 10,000 Years, from 250,000 Years ago to the present Date.