CHAPTER VII

Antennæ, their Structure and Use--Eyes, Compound and Simple--Breathing Organs--Jaws and their Appendages--Legs, Feet, and Suckers--Digestive Organs--Wings, Scales, and Hairs--Eggs of Insects--Hair, Wool, Linen, Silk, and Cotton--Scales of Fish--Feathers--Skin and its Structure-- Epithelium--Nails, Bone, and Teeth--Blood Corpuscles and Circulation--Elastic Tissues--Muscle and Nerve 96