262 Mr. C. Chambers. 



Table V. — Period of Mercury about the Sun (0° denotes Perihelion). 







104 periods. 



1 irst 52 periods. 



.Last 52 periods. 



.Between u 



qaO 



— llOO 



ft/I 



, 



1 AfiQ 



OA 



CA 



KQD 



— OOO 



+ i-VO 



— 16L 



£?A 



„ oO 



OA 





+ loo 



1 09 



flA 



yu 



^ qa 



» 120 



i T AO 

 + 144 



ODA 



— ZoU 



+ Ola 



120 



„ 150 



+ 843 



-167 



+ 1010 



„ 150 



180 



+ 953 



-117 



+ 1070 



180 



„ 210 



+ 512 



-176 



+ 688 



210 



„ 240 



+ 375 



- 71 



+ 446 



240 



„ 270 



- 22 



+ 179 



- 201 



270 



„ 300 



- 484 



+ 175 



- 659 



300 



„ 330 



- 389 



+ 63 



- 455 



330 



„ 360 



- 828 



+ 138 



- 966 



Table VI. — Period of Conjunction of Mercury and Jupiter 

 (0° denotes Conjunction). 







102 periods. 



First 51 periods . 



Last 51 periods. 



Between 0° and 



30° 



- 34 



+ 50 



- 84 



30 „ 



60 



-130 



-223 



+ 93 



60 „ 



90 



-224 



-602 



+ 378 



90 „ 



120 



-395 



-628 



+ 233 



„ 120 „ 



150 



+ 285 



+ 163 



+ 122 



150 „ 



180 



-350 



+ 132 



-482 



„ 180 „ 



210 



-651 



+ 10 



-661 



» 210 „ 



240 



- 73 



+ 158 



-231 



240 „ 



270 



+ 401 



+ 318 



+ 83 



„ 270 „ 



300 



+ 690 



+ 291 



+ 399 



300 „ 



330 



+ 415 



+ 389 



+ 26 



330 „ 



360 



+ 57 



+ 136 



- 79 



The numbers in the several columns of Tables IV, V, and VI are 

 graphically represented by figs. 11 to 19 in order. 



10. The most marked feature iu the Venus and Mercury period is a 

 treble wave which repeats itself consistently in both halves of the 

 series of observation, and has one of its maximum values at the time of 

 conjunction. The variation given by the solar period of Mercury is 

 nearly all due to the last 52 periods : it is represented by a single wave, 

 which is similar to the corresponding Kew curve when inverted. The 

 curves of the first 51 and last 51 periods of the conjunction of 

 Mercury and Jupiter are very unlike each other, and they are also 

 unlike the corresponding curves for Kew and Trevandrum. 



The several curves in weak and interrupted lines for Kew and 

 Trevandrum repectively are made for comparison with those for 

 Bombay, which are drawn strong. In the planetary results it must 



