it and the verges, and parallel thereto* 
then to represent the terrestrial equa¬ 
tor, change the axis of revolution (12 
or 15 degrees) and circumscribe an¬ 
other equatorial belt at an angle of 
12 or 15 degrees with the former, ad¬ 
ding the tropics parallel to it, and a 
declination in the planes of the verges 
will be the consequence of the change 
of axis, and the whole will represent 
such a formation as I describe in my 
map. 
Between the outer and inner crust 
of such model the mid-plane-space 1 
describe may be imagined to exist, 
with an extension greatest under the 
magnetic equator and gradually les¬ 
sening towards the verges. 
Probably the axis of the earth was 
originally in the centre of the open- ! 
ings, and was changed by some extra¬ 
ordinary catastrophe or conjunction of 
celestial bodies. If so, the original 
climates must have been alike on like 
parallels of latitude; and, the terres¬ 
trial and magnetic equator must have 
then coincided. 
If the axis of the earth was origin¬ 
ally at right angles with the plane ol 
the garth’s orbit or the ecliptic, it is 
j probable that the same cause that do 
! pro; :ed it, with relation to the. heavens, 
changed it in relation to the polar 
verges. 
JNO. CLEVES SYMMES. 
Newport, Ky. Jan. 9, 1 823. ^ 
