The New Theory. 
From the Kentucky Herald, Nov. 
arguments, he confines himself to dispro¬ 
ving the charge of borrowing from Halley, 
by protesting on his honor that he did not 
borrow from him or from any one else. I 
am bound to believe what is asserted in 
this manner; but to show Capt. Symmes 
that I did not make that charge on slight 
grounds, I shall give an extract from the 
life of Halley : “In 1692, Mr. Halley pub¬ 
lished a singular paper on the cause of 
ike change of the variation of the magne- 
tic needle ; with an Hijpothesis of the 
structure of the interal parts of the earth . 
In order to account for the change in the 
variation of the needle, he supposes that j 
there is an interior globe ivithin the earth , j 
separated from the external sphere by a 
fluid medium; that they revolve about the 
same diurnal axis in about 24 hours ; the 
outer sphere moving either a little faster 
or slower than the internal ball; that the 
magnetic pole, both of the external shell 
and included globe, are distant from the 
[poles of rotation; and that the variation a- 
rises from the change in the relative dis¬ 
tances ot the external and internal poles, : 
in consequence of the difference of their 
daily revolutions. The whole of this pa- 
pei, though masked bv the ino-enuitv of 
