Clothes-moth and furniture-borer

vine-insects and Colorado beetle, the botflies which attack sheep, cattle, and horses are familiar illustrations of formidable pests. It should also be noted how the hostile insects which infest forest trees and vegetation generally may occasion changes which have far-off effects on the fauna, scenery, and even climate of a countryside. The majority of plants are dependent on insects, as the unconscious bearers of the pollen e entiai to the normal cro -fertilization of flowers. Many insects injure plants without any compensating benefit, and in this connection there are numerous cases in which plants and insects (especially auth) form a mutual ao ship. Such plants are saved by their bodyguard of ants from unwelcome visitors, and the benefit is sometimes returned by the growth of special shelters, tennated by the partner-insects.