How does Benjamin Franklin use imagery in The Autobiography of Benjamin Franklin?

Imagery:

But I had formerly been a great lover of fish, and, when this came hot out of the frying-pan, it smelt admirably well. I balanc’d some time between principle and inclination, till I recollected that, when the fish were opened, I saw smaller fish taken out of their stomachs; then thought I, “If you eat one another, I don’t see why we mayn’t eat you.”

My lodging in Little Britain being too remote, I found another in Duke-street, opposite to the Romish Chapel. It was two pair of stairs backwards, at an Italian warehouse.

Our supper was only half an anchovy each, on a very little strip of bread and butter, and half a pint of ale between us; but the entertainment was in her conversation.

She was chearful and polite, and convers’d pleasantly. The room was clean, but had no other furniture than a matras, a table with a crucifix and book, a stool which she gave me to sit on, and a picture over the chimney of Saint Veronica displaying her handkerchief, with the miraculous figure of Christ’s bleeding face on it, which she explained to me with great seriousness.