How does H. G. Wells use imagery in The Door in the Wall?

Examples of Imagery:

I whispered it to my pillow - my pillow that was often damp and salt to my whispering lips with childish tears.

Poor little wretch I was!—brought back to this grey world again! As I realised the fulness of what had happened to me, I gave way to quite ungovernable grief. And the shame and humiliation of that public weeping and my disgraceful home-coming remain with me still.