Climate and Time in Their Geological Relations

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