11932 



11962 



DR. W. M. HICKS: A CRITICAL STUDY OP SPECTRAL SERIES. 

 (" '863911 

 (8H 28,+H 



[.3-864437-263^ ' 

 f '865855 

 L3'866436-263^ 

 -3-878900-266-1^ 



'879299 



F la (3) '892050 



F n (3) 3-893395-269-0^" 

 F 12 (4) -871538 



F n (4) 4-875553-528-3^" 

 F IS (5)(-A a ) 5-840534-908-3^ 



A.-8-14 



F 12 (5) 5-851797-908-3^ 

 ?F n (5) '852480 



f '961761 



(ioH A, 



[6'974086(432)-1546'4 



The differences are given in thick figures. The last column gives the corresponding 

 value of A 2 without regard to observation errors when = -10. In the case of (3) 

 if the differences be referred to a hypothetical F,,, displaced 3<? from 14141, the two 

 abnormal values come to 11969 and 11982. It will l>e remembered that we had an 

 indication, above of = -10 with A 2 = 11964 in treating both VI),, (2) and VF 13 (2) 

 as depending on multiples of A a . It would seem, therefore, that the value of A a is 

 close to 1196413 and the value of F,(o>) = 25912. 



The actual differences of successive denominators in the normal series may thus lie 

 represented : 



14463 = 11929 + 15J,-28-3-l 



14495 = 11933 + 15^-2-9^ 



978143 = 82 (11928-5-3-16^) 11970 



968996 = 81 (l 1 962 "9 15 '93 4 "6.3) 



964981 = 81(11913-3+ -4'63) 11959'6 

 976927 = 82(119137- 4'63) 11960 



F,i(2), F 13 (3) = 8l(ll957-4-l'91) = 81 

 F u (3), F, 8 (4) = 82(11928-5-3-16^) = 

 F n (4), F n (5) = 82(ll91373'6-4-63^) 



119597,' 

 , 11960-1, 

 , 11960-013-6, 



in which the last column also gives the value of A 2 , where = 10. 



The first multiple of 81 with addition of 2$ suggests (l) a real F,,(2), displaced li<5 

 from 13089, or (2) that there is a normal type F u about A 2 behind. The latter may 

 well not l>e a typical F u line since it makes the exact separation 260 with F^. There 



VOL. ccxin. A. 3 E 



