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 Exoskeleton. 

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

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

 Muscles 16 



CHAPTER III. 



THE DISSECTION OF THE FISH. 



The Blue-green Sunfish. The Viscera. Organs of Nutrition. 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 Interhaemals. The Pectoral Limb. The 

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

 Primitive Fishes. The Skeleton of Sharks. The Archipterygium 34 



