Contents xiii 



CHAPTER XVIII. 



FISHES AS FOOD FOR MAN. 



The Flesh of Fishes.— Relative Rank of Food-fishes.— Abundance of Food- 

 fishes.— Variety of Tropical Fishes.— Economic Fisheries.— Angling 



320 



CHAPTER XIX. 



DISEASES OF FISHES. 



Contagious Diseases: Crustacean Parasites.— Myxosporidia or Parasitic Proto- 

 zoa.— Parasitic Worms: Trematodes, Cestodes.— The Worm of the Yellow- 

 stone.— The Heart Lake Tapeworm.— Thorn-head Worms.— Nematodes. 

 —Parasitic Fungi.— Earthquakes.— Mortality of Filefish 340 



CHAPTER XX. 



THE MYTHOLOGY OF FISHES. 

 The ^Mermaid. — The Monkfish. — The Bishop-fish. — The Sea-serpent 359 



CHAPTER XXI. 



THE CLASSIFICATION OF FISHES. 



Ta.xonomy. — Defects in Taxonomy. — Analogy and Homology. — Coues on 

 Classification. — Species as Twigs of a Genealogical Tree. — Nomenclature. — 

 The Conception of Genus and Species. — The Trunkfishes. — Trinomial 

 Nomenclature. — Meaning of Species. — Generalization and Specialization, — 

 High and Low Forms. — The Problem of the Highest Fishes 367 



CHAPTER XXII. 



THE HISTORY OF ICHTHYOLOGY. 



Aristotle. — Rondelet. — Marcgraf. — Osbeck. — Artedi. — Linnsus. — Forskal. — 

 Risso. — Bloch.—Lacepede.—Cuvier.— Valenciennes.— Agassiz.— Bonaparte. 

 — Giinther.— Boulenger.— Le Sueur.— Muller.—Gi'l.— Cope.— Lutken.— • 

 Steindachner.—Vaillant.—Bleeker.—Schlegel.—Poey.— Day.— Baird.— Gar- 

 man. — Gilbert. — Evermann.— Eigenmann. — Zittel. — Traquair. — Wood- 

 ward. — Dean.— Eastman.— Hay.— Gegenbaur.— Balfour.— Parker.— Dollo. . 387 



CHAPTER XXIII. 



THE COLLECTION OF FISHES. 



How to Secure Fishes.— How to Preserve Fishes— Value of Formalin —Rec- 

 ords of Fishes. — Eternal Vigilance 429 



