PETERSBURG, Sept. 27.On Wednefday the 1 Sth inftant, one; c the grandeft Mafonic Proceflions took P*:1CC in the city of Wrlhington, which, perhaps ever was exhibited on a fimilar occafionThis proceCion was for the purpofeot laving the corner ftone of the Caoitol of theUmteuStates. Brother George Wafirlngton was pn; font on this folemn occafion, and too* acM tinguithed part in depofiting the plate anplacing the corner ftonf'■ * ■¥ r A \T XT \ ' T r /V-t' »r 'J.