114 Prof. B. Stewart on the Daily [Mar. 22, 



Table VI. (continued). 



Sun- 

 ning 

 No. 



Lunation 

 commencing 

 new moon. 



/ A\ 

 ( ) 



/ 1 \ 

 (1) 



( 2 ) 



(3) 



(4) 



( 5 ) 



(6) 



(7) 



190. 



Apr. 26, 1873. 



733 



"599 



•568 



'547 



•548 



'575 



•516 



*559 



191. 



iviay 2D, ,, 





DID 



■560 



•519 



'547 





'593 



,,5- 

 5*5 



192. 



June 24, „ 



•567 



•556 



•529 



'53o 



•625 



•628 



'5^4 



•561 



193. 



July 24, ,, 



•649 



•65I 



•566 



•622 



•612 



'575 



'575 



•602 



194. 



Aug. 23, „ 



'599 



'614 



•627 



•608 



•606 



•578 



'539 



•520 



195. 



Sept. 21, „ 



•570 



■578 



'534 



"5*3 



•477 



•478 



•424 



•393 



196. 



Oct. 21, „ 



•465 



V7 



•411 



•411 



•383 



•336 



•385 



•349 



197. 



Nov. 20, 



•315 



•375 



'3 2 3 



•236 



•223 



[•243] 



[•263] 



•282 



8. Making use of the whole series o£ lunations of Table VI. we obtain 

 the following results : — 



Phase of lunation... (0) (1) (2) (3) (4) (5) (6) (7) 



Value of range '519 '512 "499 "499 '507 -508 '499 -503 (A) 



a series which presents the appearance of a double period with maxima 

 about new and full moon. A similar result has been obtained for Lisbon by 

 Senhor Capello, Director of the observatory there (' Annals of the Obser- 

 vatory/ 1876), who finds that the declination-ranges, or rather the differ- 

 ences of the declination at 8 a.m. and at 2 p.m., obey a law similar to that 

 stated above. 



It may likewise be remarked (as was done in the corresponding dis- 

 cussion of temperate-ranges) that the sum of the four left-hand numbers 

 is larger than that of the four right-hand numbers — the former being 

 2-029, while the latter is 2-017. 



D. Semiannual Lunar Variation. 



9. If we now make use of the lunations corresponding to the six 

 months of which the middle point is the winter solstice, employing for 

 this purpose lunations 1-2, 9-15, 22-27, 34-39, 47-52, 59-64, 71-76, 

 84-89, 96-101, 108-114, 121-126, 133-138, 146-151, 158-163, 

 170-175, 183-188, 195-197 (in all 97 lunations) we obtain the fol- 

 lowing result :— 



Phase of lunation... (0) (1) (2) (3) (4) (5) (6) (7) 

 V tnge°!..! in !: er } "4*> '415 '408 -401 -409 '413 W (B) 



Eut before making use of these numbers we must apply to them a 

 small correction. For it is possible that the sum of the various new- 

 moon observations for any six winter months, inasmuch as they occur at 

 dates preceding those of the corresponding full-moon observations, or 

 observations for other phases, may be affected differently from the latter 

 by the annual variation indicated in Table I. A correction on this account 



