CONTENTS 



VOL. I. 

 CHAPTER I. 



THE LIFE OF THE FISH (Lepomis megalotis). 



PAGE 



What is a Fish? — The Long-eared Sunfish. — Form of the Fish. — Face of the 

 ■ Fish. — How the Fish Breathes. — Teeth of the Fish. — How the Fish Sees. — 

 Color of the Fish.— The Lateral Line.— The Fins of the Fish.— The Skele- 

 ton of the Fish. — The Fish in Action.— The Air-bladder.— The Brain of the 

 Fish. — The Fish's Nest 3 



CHAPTER II. 



THE EXTERIOR OF THE FISH. 



Form of Body. — Measurement of the Fish. — The Scales or E.xoskeleton. — 

 Ctenoid and Cycloid Scales. — Placoid Scales. — Bony and Prickly Scales. 

 — Lateral Line. — Function of the Lateral Line. — The Fins of Fishes. — 

 Muscles 16 



CH.\PTER III. 



THE DISSECTIOX OF THE FISH. 



The Blue-green Sunfish. — The Viscera. — Organs of Xutrition. — The Alimen- 

 tary Canal. — The Spiral Valve. — Length of the Intestine 26 



CHAPTER IV. 



THE SKELETON OF THE FISH. 



Specialization of the Skeleton. — Homologies of Bones of Fishes. — Parts of the 

 Skeleton. — Names of Bones of Fishes. — Bones of the Cranium. — Bones of 

 the Jaws. — The Suspensorium of the Mandible. — Membrane Bones of Head. 

 — Branchial Bones. — The Gill-arches. — The Pharyngeals. — The Vertebral 

 Column. — The Interneurals and Interhsemals.- The Pectoral Limb.— The 

 Shoulder-girdle. — The Posterior Limb. — Degeneration. — The Skeleton in 

 Primitive Fishes. —The Skeleton of Sharks.— The ;\rchipterygium 34 



