MAGNETIC SURVEY OP GREAT BRITAIN. 



61 



Table VI. 



Observations with Gambey's Circle and Needle 2 at Dover ; 

 by Major Sabine. 1837. 



Table VII. contains observations by Professor Phillips, with 

 a six-inch circle by Robinson, and its needle 1. The inclination 

 of the needle (i) was observed with the circle in different azi- 

 muths {6), and the dip computed from the inclination found in 

 each azimuth by the formula cot 8 = cot i sec 0. 



Table VII. 

 Observations of the Dip with Mr. Phillips's Circle and Needle 1. 



