The Eighth Vt’iacousin.The Eighth Wisconsin had arrived at Ptilt; t Knob yesterday. With them are Vie 2 Ut, 23d, and 38th Illinois, and the 1st Indiana Cavalry. Mote reinforcements*ere expected last night. An attack on(he Knob was momentarily expected fromlarge body of rebels, and the womencd cJbildieu of the place were beiDg sent wav as rapidly as possible.The Second Wlsconalu Regiment.U’a oni*n frAnt a rtrivfl u ioffnr frrxm ABeit