How does Jane Austen use imagery in Persuasion?

Imagery:

“Anne hoped she had outlived the age of blushing; but the age of emotion she certainly had not.”

“His cold politeness, his ceremonious grace, were worse than anything.”

“Her pleasure in the walk must arise from the exercise and the day, from the view of the last smiles of the year upon the tawny leaves and withered hedges, and from repeating to herself some few of the thousand poetical descriptions extant of autumn--that season of peculiar and inexhaustible influence on the mind of taste and tenderness--that season which has drawn from every poet worthy of being read some attempt at description, or some lines of feeling.”