How does Audrey Niffenegger use imagery in The Time Traveler's Wife?

Imagery:

"Here all of nature was captured, labeled, arranged according to logic that seemed as timeless as if ordered by God, perhaps a God who had mislaid the original paperwork on the Creation and had requested the Field Museum staff to help Him out and keep track of it all. For my five-year-old self, who could derive rapture from a single butterfly, to walk through the Field Museum was to walk through Eden and see all that passed there."

"Clare strokes my nose. Her fingers travel across the bridge and over the brows."