1. these lines contain imagery. what do these lines you see?
bringing a stone grasped firmly by the top/in each hand, like an old-stone savage armed.

2. these lines contain imagery. what do these lines you see?
to each the boulders that have fallen to each./and some are loaves and some so nearly balls

1) Sight imagery because it helps you see a person holding two stones above that person's head. 'old-stone savage armed' This basically says that the person looks like a crazy person with a weapon - the stones.

2) Sight imagery because it helps you see that the person dropped the stones  and the stones are rolling, nearly like balls!