40 



DISCUSSION OF THE A'ERTICAL COM PON EXT 



Normals of the Vertical Force for December. 



Year. 



0" 



1 



2 



3 



4 



5 ' 6 



7 



8 



9 



10 



11" 



1841 

 1842 

 1843 

 1844 



597 

 713 

 752 

 754 



744 

 753 



691 

 707 

 733 

 754 



742 

 755 



590 

 709 

 740 

 757 



1 606 



, 706 



742 ! 740 



756 ! 755 



743 



758 



592 

 715 

 740 

 749 



740 

 751 



598 

 711 

 729 

 750 



720 



746 



Means 



703 





697 





699 



703 





700 



697 





1 



Noon 1 13 



14 



15 



16 



17 



18 1 19 1 20 



21 



22 



23'' 



Min. 



t;05 



709 

 727 

 743 



729 

 733 



597 

 707 

 743 

 736 



749 

 724 



607 

 706 

 758 

 748 



760 

 757 



610 

 711 

 767 

 755 



763 

 751 



605 

 713 

 764 

 751 



757 

 748 



604 

 713 

 754 

 750 



757 

 750 



+ 17 

 +17J 

 +23J 

 +23| 



695 





695 



704 





710 



707 





705 





+20.4 



Normals of the Vertical Force for January. 



Year. 



0' 1 



2 3 



' 



5 6 



7 



8 



9 



10 



11" 



1841 

 1842 

 1843 

 1844 

 1845 



058 



733 



754 



739 



747 



642 



730 

 747 



728 

 752 



656 



732 

 752 



733 



757 



649 



732 

 763 



732 



767 



656 



730 

 760 



725 

 758 



653 



720 

 753 



713 



752 



Means 



716 



707 



713 





715 





715 





709 





1 



Noon 



13 



14 



15 1 16 



17 



18 



19 20 



21 



22 23" 



Min. 



664 



715 

 751 



708 

 748 



650 

 '690 

 715 

 749 



663 



724 i 737 

 742 1 753 



740 

 760 



675 



741 

 756 



743 

 753 



670 



744 

 749 



745 

 746 



663 



744 

 747 



744 

 754 



+17i 

 +17 

 +23J 

 +23i 



709 





705 



717 





724 



I 721 





719 





+21.5 



' No use is made of this reading, nor of the analogous readings in the following two months. 



