306 



DISCUSSION OF THE SECULAR VARIATION 



Brunswick, 

 Me. 



C. V. 4th or. 



175° 

 1751 

 1752 

 I7S3 

 1754 

 1755 

 1756 

 1757 

 1758 

 1759 

 1760 

 1761 

 1762 

 176J 

 1764 

 1765 

 1766 

 1767 

 176S 

 1769 

 1770 

 1771 

 1772 

 1773 

 1774 

 1775 

 1776 



1777 

 1778 



1779 

 1780 

 1781 

 17S2 

 1783 

 1784 

 1785 

 1786 

 17S7 

 178S 

 17S9 

 1790 

 1791 

 1792 

 1793 

 1794 

 1795 

 1796 



1797 

 1798 

 1799 



1805 

 1806 

 1807 



i8n 

 1812 

 1813 

 1814 

 1S15 

 1S16 

 1817 

 1S18 

 1819 



Salem, Mass. 



C. VI. 4th or. 



43-7 

 43-4 

 42.1 



43-3 

 44.8 

 41.2 

 43-4 

 43-5 

 42.7 

 42.0 

 41.8 

 43-8 

 45-1 



43-1 

 43-1 

 43-2 

 43-2 

 43-0 

 43-0 

 43-0 

 42.7 

 42.4 

 42.7 



43-S 

 44.1 



50.2 

 50.4 



47-7 

 47.0 

 47.0 

 46.8 

 47.6 

 49.0 

 48.1 

 50.6 

 50.9 

 49-7 

 47-6 

 47-3 

 48.4 

 47-9 

 49.1 

 49.6 

 50.0 

 49.2 

 47-5 

 49-9 

 47-2 

 47-2 

 48.2 

 46. S 

 48. 3 

 49-2 

 44-7 

 47-4 

 47.6 

 46.8 



46.3 

 45.2 



47-3 

 49.4 



47-1 

 47-1 

 47-3 

 47.8 

 48.4 

 49.1 

 49.8 

 50.1 

 49.4 

 48.3 

 47.8 

 48.0 

 48.3 

 48.9 

 49-4 

 49-4 

 49.0 

 48.6 

 48.4 

 48.0 

 47-7 

 47.6 

 47-7 

 47.8 



47-5 

 46.9 

 46.8 

 47.0 

 46.8 

 46.6 

 46.8 

 47-4 

 48.0 



Monlreal, 

 Can. 



C.VII. 4th or. 



New Haven, 

 Con. 



49-7 

 50-4 



47-3 

 47-7 

 '4S.5 

 48. 5 

 49-7 

 49-5 

 49-5 

 49-5 

 48.2 



50-3 

 50.2 



4S.1 

 49-3 

 48.4 

 50.2 

 51.0 



51-3 

 50.8 

 49.8 

 Si-7 

 49-7 

 49.2 



50-3 

 49-3 

 50.0 



49-7 

 46.9 

 49.0 

 48.6 



47-3 

 46.6 

 46.5 

 46.8 

 49.0 



48.1 

 48.0 

 48.3 

 48.7 

 49.0 

 49.2 

 49-3 

 49-3 

 49-3 

 49-3 

 49-3 

 49.1 



48.7 

 48.6 

 48. 8 

 49.2 

 49.8 

 503 

 50-5 

 50.5 

 50-4 

 50-3 

 50.1 

 49.9 

 49-7 

 49.6 

 49-4 

 49.1 

 48.7 

 48.3 

 48.0 



47-5 

 47.2 

 47.1 

 !l-7-3 

 47-7 



Toronto, Can. 

 C.I. 4th or. 



New York. 



N. Y. 



C. IV. 4th or 



Philadelphia, 

 i'a. 



C.VII. 4th or. 



53-6 

 52.7 



53-3 

 51-5 

 51.8 

 52.0 

 51.8 

 52.5 

 54-7 

 52.9 

 54-4 

 53-5 

 51.0 



52.1 

 52.0 

 52.0 

 52.2 

 52.9 

 S3-5 

 53-7 

 53-6 

 53-2 



52. 



8 



53 



7 



52 







S4 



4 



50 



6 



51 



9 



52 



2 



51 



7 



53 



i 



52 



4 



52 



6 



52 



9 



54 



b 



53 



2 



53 



I 



52 



I 



^,2 







50 



6 



53 



I 



51 



6 



51 



9 



53 







51 



6 



51 



8 



52 



I 



52 



2 



50 



5 



52 



.2 



52 



•3 



52 



•5 



530 

 52.9 

 52.6 

 52.1 

 51.9 

 52.0 



52.3 

 52.6 

 52.7 

 52.9 



53-2 

 53-6 

 53-4 

 52-9 

 52-3 

 51-9 

 51.8 



51-9 

 52.0 

 52.1 

 52.1 

 52.0 

 51-9 

 51-9 

 51-7 

 51.6 

 51.8 

 52.1 

 52.3 



