@jeremykong,
												For what it's worth, here's what I get out of it.
First, it should be "signoria", not "sognoria".  This is a reference to the 
Piazza della Signoria, where Savaronola was executed.
Savoronola has apparently been given something to drink.
He thanks them.  He says that the rack, an instrument of 
torture, can make a cripple of you in less than an hour and 
that the pain will constrict your throat.  Therefore, he will 
say what he has to say now, while he still can.  He addresses 
his words to the citizens of Florence who are celebrating 
his execution day as a holiday.
Painting of Savonarola's execution in the Piazza della Signoria.