[ »96 ] 
II. A Letter from Mr. Henry Baker, F. R. & 
to the Prefid ent, containing an ExtraB of 
a Letter from Mr. William Arderon, 
F. R. S. to Air. Baker, giving an Ale- 
con t of the prefent Conditio ?i of the Ro- 
man Camp at Caftor in Norfolk, with a 
P i an of it j and alfo a Reprefentation of 
an Halo or Mock-Sun obferved by the 
fame Ge?ttleman July i r, 1749. 
SlR y Condon, Oftoler 26, 1 749 . 
Read Nov. z.'i'TAKE the Liberty to Jay before you 
X an Account lately fern me by my in- 
genious Correfpondent Mr. William Arderon-, F. R. S. 
of the prefent Condition of the Roman Camp at 
Cajlor , in the County of Norfolk , together with a 
Plan or Drawing of the fame, taken by himfelf upon 
the Spot, in the Month of June laft : At which 
Time he went thither on purpofe to examine it. As 
this Camp is a remarkable Piece of Roman Anti- 
quity, and I have always found Mr. Arderon ex- 
tremely accurate in his Obfervations and Defcrip- 
tions, they may I hope be thought deferving your 
Notice. I take likewife this Opportunity of pre- 
fenting you the Account and Reprefentation of an 
Halo , or Mock-Sun, feen by the fame diligent Ob- 
ferver on the nth Day of July laft. 
Permit 
