C 478 3 



Third fet of experiments, in which the poles of the 

 needle were reverfed, but the fame fide of the 

 inftrument to the Eaft, as in the fecond fet of ex- 

 periments, and the needle rather more magnetical, 

 being touched with a larger fet of magnets. 



72 30 



72 30 



72 30 



72 30 



72 30 



72 30. 



Fourth fet of experiments, viz. the fame fide of the 

 inftrument to the Eaft, as in the firft fet of expe- 

 riments. 



72 10 



72 10 



72 1 5 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. 



72 20. 



Experiments 



