Silver by walter de la mare slowly, silently, now the moon walks the night in her silver shoon; this way, and that, she peers, and sees silver fruit upon silver trees; one by one the casements catch her beams beneath the silvery thatch: couched in his kennel, like a log, with paws of silver sleeps the dog; from their shadowy cote the white breasts peep of doves in a silver-feathered sleep; a harvest mouse goes scampering by, with silver claws and a silver eye; and moveless fish in the water gleam, by silver reeds in a silver stream. what seems to be the purpose of the poem?