[ 7 00 ] 
plates or tables, in the ufe of them, than they did In 
their figure. Nor can I apprehend, the former were 
defigned for any other purpofe, than that above men- 
tioned. But as they are very remarkable, and per- 
haps the fingular remains of that kind, relating to 
the Roman government, either here in Britain, or 
any other part of their dominions ; they may deferve 
the further confideration of the curious, in their in- 
quiries into thefe lubjects. 
CIX. Two EJJays addrejfed to the Rev. 
James Bradley, D. D and Aftro?n . Reg. 
by Mr. Charles Walmefley, F. R. S. 
Read Nov. 4, 
1756. 
Reverend Sir, 
HAVE taken the liberty to addrefs to 
you two little efiays, that relate to 
aftronomv ; for as no one is more mailer of that fei- 
* * 
ence, or has enriched it with greater difeoveries, than 
yourfelf, you can bed judge of the worth and ufe of 
any performance in that kind. The firil efifay is a 
Theory on the Preceflion of the Equinoxes, and the 
Nutation of the Earth's Axis ; which, as it is in- 
debted to you for the difeovery of the caufe, on 
which it is founded, as alfo for the fettling of the 
effedts, with which its refult is to be compared, ought 
to be laid before you as a homage, that of right is due. 
You expreiled a defire of a theory on that fubjedt: 
I have therefore examined, according to the principle 
of gravity i what motions may be produced in the 
globe 
