Physics. 309 
ie a i TN ag 
Sa rs Sa a a a eae a 
iron; and that it is by this means alone that external neutrality 
ccurs In the iron cores of an electro-magnet upon the cessation 
_ of the inducing current. * * * 
_., “That inherent magnetic polarity is a quality of all matter, solid, 
liquid, gaseous, and the ether itself, varying only in degree and 
not In nature, seems demonstrated by a series of researches I have 
aking upon the mechanism employed in magnetic con- 
Be Simic St 
0 
_ mes; cons y 
-Tegarded as an extremely magnetic body, obeying the same laws 
current passes through an iron wire, a neutrality produced 
an artificial superposition of a weaker contrary magnetism 
* “Prog Ro ” te ; 
. Roy. Soe.” (vol. 35, p. 178) and “Journal of the Society of Tele- 
Staph Engineers,” vol, BY “amo 
