VERTEBRATES ill 



6. Light and sight under water (as in 5). 



7. Protection of fishes : sting-ray ; torpedo ; coral-fish ; 

 sturgeon ; lava-fish ; swordfish ; sawfish ; pipefish. 



8. The social instinct of fishes, and " schools." 



9. The breeding habits of salmon ; eel ; stickle-back ; 

 sturgeon ; whitefish ; shark ; sea-horse ; sunfish. 



10. The fishing industries of the Great Lakes or of the 

 cold oceans, with a list of the fishes caught and their 

 values. 



11. Fish nets and traps: seine; gill-net; pound-net; 

 trawl ; French or English ; fish-wheel ; fish-weir ; spear ; 

 dip-net ; set-line ; spoon ; fly. 



12. The U.S. Bureau of Fisheries: its locations, its 

 problems, and its methods. 



13. The State Fish Commission, as above. 



14. Game and fish laws; their purpose and their en- 

 forcement. 



15. Game fish of the fresh waters; trout, bass, pickerel, 

 and muskellunge. 



16. Game fish of the ocean : tarpon, tuna, sea-bass, 

 swordfish, and bluefish. 



1 7. Fish as food. 



18. Fish diet and leprosy. 



19. Fish diet and parasitic worms. 



20. Fish nuisances : carp, catfish, and dogfish. 



21. Commercial products of fishes, their preparation 

 and their uses : caviar, shagreen, cod liver oil, isinglass, and 

 glue. 



22. The geographic distribution of fishes, with means of 

 dispersal and restriction. 



23. The faunal regions of the lake (or ocean), with 

 characteristic forms. 



24. Fishes of ancient times ; of the Devonian period. 



