How does M. R. James use imagery in Casting the Runes, and Other Ghost Stories?

Examples of Imagery:

"'Once,' Dennistoun said to me, 'I could have sworn I heard a thin metallic voice laughing high up in the tower. I darted an inquiring glance at my sacristan. He was white to the lips.'" Canon Alberic's Scrapbook, pg. 2

"Pale dusky skin covering nothing but bones and tendons of appalling strength; coarse black hairs, longer than ever grew on a human hand; nails rising from the ends of the fingers and curving sharply down and forward, grey, horny, and wrinkled." Canon Alberic's Scrapbook, pg. 10.