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Or IS. 
T O 
SIR, 
I T has been the immemorial 
Cuftom of Poets to afiift 
their Genius by the Invo¬ 
cation of a favourite Mufe. Per¬ 
haps, in imitation of them, Profe 
Authors were firft tempted to 
fend abroad their Performances 
under the Countenance of a worthy 
Patron. The Advantages arifing 
hence are great. Readers are apt 
A 2 to 
