304 



DISCUSSION OF THE SECTJLAR VARIATIOISr 



by having the letter C and a E.oman numeral expresshig the number of individual 

 series attached to the name of the principal station. These combinations are as 

 follows : — 





' Brunswick 



49 years. 









Portland . . . 



37 " 



Constant Reduction 



+o°.8 



Brunswick, Me. 



Gardiner . 



31 " 



" 



+0.5 





Castine 



40 " 



<; 



0.0 





Cornish . . . 



14 " 



" " 



+1.0 





Salem .... 



43 years. 









New Bedford 



58 " 



Constant Reduction 



—°°-s 



Salem, Mass. . . - 



Cambridge . . 

 Boston .... 



50 " 

 32 " 





-fo.4 

 — I.I 





Fort Independence 



.25 " 





—0.7 





Providence 



34 " 





—0.6 





■' Montreal . . . 



27 years. 









Second series . 



5 " 



Constant Reduction 



— o'^ 



Montreal, Can. . . . 



Third " . . 

 Fourth " . . 



9 " 



S " 





+0.7 

 4-0.9 





Fifth " . . 



6 " 





— I.I 





Sixth " . . 



4 " 





+ 1.2 





. St. Martin . . 



10 " 





4-0.6 



New Haven, Conn. 



New Haven . 



85 years. 







Toronto, Can. 



Toronto 

 ' Flatbush . . . 



31 years. 

 39 years. 







New York, N. Y. . - 



Fort Columbus . 

 Fort Hamilton . 



48 " 

 26 " 



Constant Reduction 



—0^6 

 — °-3 





^ New York . . 



21 ■' 





—0.7 



Philadelphia, Penn. 



Philadelphia, series 



Nos. 80, 8i, 83 of 



general table . . 30 years. 

 Philadelphia, series 



No. 82ofgen'ltable 20 " 

 Philadelphia, series 



No. 87 of gen'l table 40 " 

 Morrisville, series No. 



65 of general table 



to 1847 • • • • 57 " 

 Morrisville, series No. 



65 of general table, 



1849 to 1870 . . 11 " 



Germantown, series 

 No. 40 of gen'l table 15 " 



West Chester, series 

 No. ii9ofgen'ltable 16 " 



Charleston, S. C. 



f Charleston 

 \ Fort Moultrie 

 I St. Johns . 



. 25 years. 

 • 33 " 

 ■ IS " 



Constant Reduction — 5°. J 

 +0.5 



4-0.1 



" " -|-2.2 



4-3.0 



Constant Reduction — o°.i 



+2.7 



