How does George Orwell use imagery in Down and Out in Paris and London?

Examples of Imagery:

"I got up and went out, feeling as though my back were broken and my skull filled with hot cinders. I did not think that I could possibly do a day's work. And yet, after only an hour in the basement, I found that I was perfectly well." Chapter 11, p. 66

"Poor old woman, it was too heavy for her to lift, and she sat down, put her head on the table and burst out crying. And I jeered at her. This is the kind of effect that fatigue has upon one's manners." Chapter 21, p. 113

"He could imagine no other expenses. His food was bread and margarine and tea—towards the end of the week dry bread and tea without milk—and perhaps he got his clothes from charity. He seemed contented, valuing his bed and fire more than food. But, with an income of ten shillings a week, to spend money on a shave—it is awe-inspiring." Chapter 25, p. 134