Specimen Calculation (continued). 
402 
OBSERVATIONS OE COMPLEX PERIODICAL PHENOMENA. 
mill! 
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+ 0-993 
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If Hill p 
If nil! 1 1 
i + + + + 
ill II 
1 + + 
+(0 to 6) 
+(13 to 7) 
-(14 to 19) ... 
-(25 to 20) ... 
Sums 
Factors 
Products 
Sum of Pro- 1 
ducts J 
Ditto -j- 13 
+(0 to 6) 
-(13 to 7) 
+ (14 to 19) ... 
-(25 to 20) ... 
Sums 
Factors 
Products 
Sum of Pro- 1 
ducts J 
Ditto 4- 13 
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m 
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imp! ^ 
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11 : III II 
1 1 "l+l + + 
ill! 
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Symbol of 
operation. 
III 
+(0 to 6) 
+ (13 to 7) 
+(14 to 19) ... 
+ (25 to 20) .. 
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Factors 
Products 
Sum of Pro-1 
ducts J 
Ditto+13 
il 
ify 
Pi 
! 
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i 
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