to m t&e ^ecfrantcal ^oDiitttott 



tream of the Needle^ and the later 

 draw it* 



EX PER. VIII. 



I Have found indeed, and I que* 

 fhon. not but bther obfervers 

 may have done fo too, that, if a bar 

 of Irooj that has not ifcood long in 

 an erected pofture, be but held per- 

 pendicular, the forementioned ex-* 

 periment will fucceed* (probably up- 

 on fuch an account as that I have 

 lately intimated : ) But then this vir- 

 tue, difplayed by the extreams of 

 the bar of Iron, will not be at all 

 permanent, but fo tranftent, that, 

 if the b jr be but inverted and held 

 again uprigat^ that end which juft 

 before w-as the upp^rmoit, and drew 

 the north-end of the needle, will 

 now, being k,wermofi: ? df!ve it away, 

 which, as was lately obferved, will 

 not happen to a bar which has been 

 fome years or other competent tme 

 kept in the fame Pofitioo. S ; ih *t, 



fince 



