Sun-spots and Terrestrial Phenomena. 



259 



D\ Possible Variations of the Lunar Effect tvitli the Sun-spot Period. 



7. The groups of years taken, in this case, as years about the times 

 of maximum sun-spots, and as years about the times of minimum sun- 

 spots, were the same as were used in the similar inquiry respecting 

 temperature-ranges (paragraph 12), except that here the records under 

 discussion stop at 1871*75 and both sets of winters include that of 

 1870*75 to 1871*75. The results given by the lunations of the first set 

 of winter half-years are — for minimum and maximum sun-spot times 

 respectively : — 



Phase of lunation 



(0) 



(1) 



(2) 



(3) 



(4) 



(5) 



(6) 



(7) 



Winter variation (minimum 





















period) 



2-83 



2-89 



2 



84 



2-77 



2-74 



2-66 



2-63 



2-76 



Deduct (B) 



3-14 



3 05 



2 



95 



3-01 



3-09 



3-00 



2-97 



3-03 



Supposed effect of solar mini- 























-0-31 



-0-16 



-0 



•11 



-0-24 



-0-35 



-0-34 



-0-34 



-0-27 



(F) 



and 





(0) 



(1) 



(2) 



(3) 



(4) 



(5 



(6) 



(7) 



Winter variation (maximum 





















3-35 



3-19 



2-98 



3*04 



3 -22 



3-29 



3'27 



3-18 





3-14 



3-05 



2-95 



3-01 



3-09 



3-00 



2-97 



3-03 



Supposed effect of solar maxi- 





















+ 0-21 



+ 0-14 



+ 0-03 



+ 0-03 



+ 0-13 



+0-29 



+0-30 



+ 0-15 



(H) 



(I) 



and those given by the second set of winter half-years are : — 





(0) 



(1) 



(2) 



(3) 



(4) 



(5) 



(6) 



(7) 



Winter variation (minimum 





















2-93 



2*90 



2-77 



2-77 



2-77 



2-71 



2-70 



2-81 



Deduct (B) 



3-14 



3-05 



2-95 



3-01 



3-09 



3-00 



2-97 



3-03 



Supposed effect of solar mini- 





















-0-21 



-0-15 



-0-18 



-0-24 



-0-32 



-0-29 



-0-27 



-0-22 











(FO 



(G 



and 





(0) 



(1) 



(2) 



(3) 



(4) 



(5) 



(6) 



(7) 



Winter variation (maximum 



















period) 



3-30 



3-21 



3-07 



3-10 



3-27 



3-35 



3-31 



3-21 



Deduct (B) 



314 



3-05 



2-95 



3-01 



3-09 



3-00 



2-97 



3-03 



Supposed effect of solar maxi- 



















mum 



+ 0-16 



+ 0-16 



+ 0-12 



+ 0-09 



+ 0-18 



+ 0-35 



+ 0-34 



+ 0-18 



(H') 



(10 



The selected lunations of the summer half-years give — for minimum 

 and maximum sun-spot times respectively : — 



