CHAPTER IV. How Insects Cause or Carry Disease 40

HOW INSECTS CAUSE OR CARRY DISEASE 40

Numbers, 40; importance, 41; losses caused by insects, 41; loss of life, 42; The flies, 43; horse-flies, 43; stable-flies, 44; surra, 45; nagana, 45; black-flies, 46; punkies, 46; screw-worm flies, 47; blow-flies, 48; flesh-flies, 48; fly larvæ in intestinal canal, 49; bot-flies, 50; Fleas, 52; jigger-flea, 53; Bedbugs, 54; Lice, 54; How insects may carry disease, 55; in a mechanical way, 55; as one of the necessary hosts of the parasite, 56.