242 



PEOCEEDINGS OP THE AMERICAN ACADEMY 



TABLE III. 



PERIODIC ERRORS. 



Spaces. 



1 



2 



3 



4 



5 



6 



7 



8 



9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 



I. 



Nobert. 



Fraction of iuch. 

 ~ 21700 



+ -L- 



' 30400 



~ 16'J00 



~ 21700 



~ 21700 



""" 13800 



' 7600 



"T 11500 



"T" 12700 



1 

 "T lUOOO 



1 



"T" 30400 



+ J- 

 21700 



+ ^- 

 ' 19000 



+ -^ 

 25300 



+ -i- 

 ' 10900 



+ J- 

 ' S900 



+ J- 

 ' 16900 



' 38000 

 1 

 152000 







II. 



Rutherford. 



III. 



Rogers. 



Fraction of inch. 

 1 

 33800 



1 



152000 



1 



+ 

 + 



+ 

 + 



30400 



1 



152000 



1 



+ 



33800 



1 

 152000 



1 

 43400 



1 

 30400 



1 

 33800 



1 

 50700 



1 

 100300 



1 

 50700 



1 

 60800 



1 



ssoTo 

 1 



30400 



1 

 76000 



1 

 60800 



1 

 50700 



1 

 100300 



Fraction of inch. 

 1 



44700 



_1 



22400 



1 

 11500 



1 

 8700 



1 

 6900 



1 

 6000 



1 

 6700 



1 

 5600 



1 

 5700 



1 

 7200 



1 



9900 



1 



19500 



1 



+ 

 + 

 + 

 + 

 + 

 + 



47000 



1 

 380000 



1 

 50700 



1 

 15800 



1 

 18500 



1_ 

 19500 



1 

 44700 



