, ▁and ▁also ▁correspond ed ▁with ▁the ▁P ied mont ese ▁officers ▁who , ▁bel ieving ▁that ▁they ▁had ▁the ▁appro val ▁of ▁Prince ▁Charles ▁Albert ▁of ▁Car ign ano , ▁the ▁he ir ▁to ▁the ▁throne , ▁were ▁planning ▁a ▁military ▁revol t . ▁There ▁was ▁talk ▁of ▁a ▁rising ▁at ▁Milan ▁combined ▁with ▁a ▁P ied mont ese ▁invasion ▁to ▁exp el ▁the ▁Aust ri ans , ▁but ▁the ▁plans ▁were ▁very ▁vague ▁and ▁un p ract ical , ▁for ▁the ▁military ▁consp ir ators ▁could ▁count ▁only ▁on ▁a ▁few ▁hundred ▁men , ▁and ▁Conf al on ieri ▁war ned ▁them ▁that ▁Lomb ard y ▁was ▁not ▁ready . ▁On ▁the ▁out break ▁of ▁the ▁P ied mont ese ▁revol t ▁( M arch – A pril ▁ 1 8 2 1 ) ▁the ▁Aust rian ▁authorities ▁made ▁some ▁arr ests , ▁and , ▁through ▁the ▁tre ach ery ▁of ▁one ▁consp ir ator ▁and ▁the ▁fool ish ness ▁of ▁others , ▁discovered ▁the ▁plot , ▁if ▁it ▁could ▁so ▁be ▁called , ▁and ▁arrested ▁Sil v io ▁Pel lic o ▁and ▁Mar on cel li ▁and ▁afterwards ▁Conf al on ieri . ▁ ▁A ▁long ▁trial ▁now ▁began , ▁conducted ▁with ▁all ▁the ▁rig our ▁and ▁secre cy ▁of ▁the ▁Aust rian ▁procedure , ▁and ▁Conf al on ieri , ▁out w itted ▁by ▁the ▁ast ute ▁exam ining ▁magistr ate , ▁A ▁Salv otti ▁( d . ▁ 1 8 6 6 ), ▁contrad icted ▁himself , ▁made