280 



Comparison of Gausses Theory of 



Table III. 



Gros Cap, 



Fort Brady, 



Mackinac, 



SouthManitou 



Ann Arbor, 



Ypsilanti, 



Monroe, 



Toledo, 



Maumee, 



Piqua, 



Urbanna, 



Columbus, 



Springfield, 



Dayton, 



Lebanon, 



Hamilton, 



Mason, 



Cincinnati, 



Will'mstovi'n, 



Louisville, 



Frankfort, 



Lexington, 



[Clay's Ferry, 



VARIATION. 



Gauss. Looniis. 



.§l'3 



2 59 



3 25 



4 18 

 3 37 

 3 35 

 3 32 

 3 39 



3 45 



4 25 

 4 9 



3 39 



4 13 

 4 27 

 4 31 

 4 36 

 4 35 

 4 46 



4 52 



5 29 

 5 1 

 4 51 



-4 53 



-§52 

 2 42 



2 20* 



3 54 

 2 41 

 2 38 

 2 33 

 2 42 



2 50 



3 58 



3 32 



2 59 



4 23* 



3 58 



4 9 

 4 24 

 4 10 

 4 55* 



4 48 



5 29 

 4 52 

 4 38 



-4 40 



Difr. 



-21 

 17 



65 



24 



56 



57 



59 



57 



55 



27 



37 



-40 



+10 



-29 



22 



12 



-25 



+ 9 



- 4 







9 



13 



-13 



Gauss. 



77 32-7 

 77 32-7 

 77 41 

 76 25-5 

 74 30-7 

 74 28-0 

 74 14-4 

 74 2-9 

 73 56-6 

 72 41-5 

 72 42-4 

 72 41-5 

 72 33-8 

 72 24 6 

 72 8 6 

 72 31 

 72 4-5 

 71 49-3 

 71 23-4 



70 59-8 



71 3-3 

 59-0 



70 47-7 



160 

 136 

 39-7 



0-9 

 29-4 

 25-8 



8-6 

 56-3 

 50-4 

 33-9 

 30 2 

 23-6 

 21-4 

 151 

 58-4 

 56-6 

 55-1 

 41-4 

 150 



1-4 

 55-9 

 48-1 

 366 



DTff. 



+16-7 

 191 

 24-4 

 24-6 

 61-3 

 62-2 

 65-8' 

 666 

 662 

 676 

 72 2 

 77-9 

 72-4 

 69-5 

 70-2 

 66-5 

 69-4 

 67-9 

 68-4 

 58-4 

 67-4|] 

 70-91 



+71-lll 



INTENSITY. 



-7404 

 -7397 

 •7376 

 ■7355 

 •7179 

 -7174 



7151 

 -713' 



7130 

 •7030 

 -7021 

 •7007 

 •7009 

 •7001 

 -6975 

 -6974 

 •6970 

 •6950 

 •6906 

 •6885 

 •6874 



6860 

 •6840 



1-7407 

 1-7518 



-00457 

 -00633 



