B&W Illustrations; This is a thin, trade sized booklet with cardstock covers and a stapled spine. The booklet is in Very Good condition and was issued without a dust jacket. The book covers have some spots of ground-in dirt and bumping to the corners and edges. The text pages are clean and bright. "Butterflies have the typical four-stage insect life cycle. Winged adults lay eggs on the food plant on which their larvae, known as caterpillars, will feed. The caterpillars grow, sometimes very rapidly, and when fully developed, pupate in a chrysalis. When metamorphosis is complete, the pupal skin ... View More...