C 478 3 
Third fet of experiments, in which the poles of the 
needle were reverfed, but the fame tide of the 
inftrument to the Eaft, as in the fecond let of ex- 
periments, and the needle rather more magnetical, 
being touched with a larger fet of magnets. 
° / 
7 2 3° 
72 7 o 
72 30 
7 2 3° 
72 70 
7 2 3°* 
Fourth, fet of experiments, viz. the fame fide of the 
inftrument to the Eaft, as in the firft fet of expe- 
riments. 
° r 
72 10 
72 10 
72 15 Obferved by Mr. Wales. 
72 10 
72 10 
72 10. 
Fifth experiment, viz. the fame end of the needle 
made North, as in the firft fet of experiments, 
and alfo the fame fide of the inftrument to the 
Weft, as in the firft fet of experiments. 
o / 
72 20. 
Experiments 
