How does James Frazer use imagery in The Golden Bough?

Nature Imagery:

“when the god is a corn-god, the corn is his proper body; when he is a vine-god, the juice of the grape is his blood; and so by eating the bread and drinking the wine the worshipper partakes of the real body and blood of his god.”

Imagery:

“For ages the army of spirits, once so near, has been receding farther and farther from us, banished by the magic wand of science from hearth and home”