244 



Mr. C. Chambers. 



No. of 

 luna- 

 tion. 



Date of new 

 moon begin- 

 ning lunation. 



(0). 



(1). 



(2). 



(3). 



(4). 



(5). 



(6). 



(?)■ 



(396) 



Aug. 18, 1879 



6-3° 



5-9° 



6-8° 



7-7° 



6-8° 



7-1° 



8-3° 



8-7° 



397 



Sept. 16 „ 



8-4 



7-9 



75 



7-5 



7'8 



7-0 



73 



9-1 



398 



Oct. 15 „ 



10-5 



12-2 



12-8 



13 



12 3 



10-1 



12-8 



16-0 



399 



Nov. 14 „ 



14-7 



13-8 



13-5 



14 6 



16 6 



15 1 



13 6 



15-0 



400 



Dec. 13 „ 



15 1 



13 5 



15-6 



15-4 



13 1 



14-2 



14-7 



14 2 



401 



Jan. 12,1880 



13 4 



13 8 



12-6 



15-6 



17-6 



15-0 



13 1 



12-9 



402 



Feb. 10 „ 



14-4 



12 1 



12 1 



13 2 



14 2 



14-8 



12 5 



11-8 



(403) 



Mar. 11 „ 



11-3 



11-5 



10-4 



9-4 



10 9 



12 3 



12-5 



11-5 



(404) 



April 9 „ 



10-0 



8-8 



9-9 



10 6 



10-1 



9-7 



9-9 



10-0 



(405) 



May 9 „ 



9-5 



9 1 



93 



9-3 



9-0 



8-4 



7-9 



9-1 



(406) 



June 8 



9-0 



7-9 



7-5 



7-8 



8-7 



8-2 



6-6 



6-6 



(407) 



Julv 7 „ 



7-1 



6-9 



6-0 



73 



6-9 



6 6 



6-6 



7-1 



(408) 



Aug. 6 „ 



6-5 



6 2 



6 5 



6-8 



8-0 



8-4 



7-9 



7 3 



(409) 



Sept. 4 „ 



71 



8-3 



9-0 



6 6 



6-2 



7-4 



71 



7-7 



8. The whole series of 409 lunations gives the following result : — 





(0) 



(I) 



(2) 



(3) 



(4) 



(5) 



(6) 



(7) 





10-69 



10-67 



10-67 



10-73 



10-77 



10-66 



10-61 



10-66 



(A) 



A series which, like that found by Dr. Stewart from the Kew tem- 

 perature-ranges, has two maxima and two minima, but every turning- 

 point in the Bombay series occnrs somewhat later on in the lunation 

 than the corresponding turning-point in the Kew series, and the range 

 (0 o, 16) of the Bombay series is less than that (0°'46) of the Kew 

 series. The sum of the four left-hand numbers (42*76) is also larger, 

 as in the Kew series, than the sum (42*70) of the four right-hand 

 numbers. Series (A) is curved in fig. 2. 



Dividing the whole series into two parts, we obtain — 





(0) 



(1) 



(2) 



(8) 



(4) 



(5) 



(6) 



(7) 





Range (1847-75 to 1863-75) ... 



11-32 



11-36 



11-42 



11-53 



11-49 



11-32 



11-30 



11-25 



<B> 



„ (1863-75 to 1880-75) ... 



10-10 



10-01 



9-96 



9-98 



10-10 



10-05 



9-96 



10-11 



(C) 



Upon which it may be remarked that, though possessing, of neces- 

 sity, points of similarity to the series (A), these two series are far 

 from being identical with it or with each other. 



D. Semi-annual Lunar Variation. 



9. In dividing the lunations into winter and summer lunations, we 

 had inadvertently chosen the 21st March and 23rd September, instead 

 of the 31st March and 30th September, as the dates between which, 



