XII ANIMAL RESOURCES OF THE UNITED STATES. 



Page. 



II. PROTECTION 241 



2. Preservation of game and fish 241 



4. (Accessory.) Enemies of useful animals 244 



III. PROPAGATION 244 



5. Propagation of mammals 244 



6. Propagation of birds . 244 



7. Propagation of reptiles . 245 



8. Propagation of amphibians 245 



9. Propagation of fishes 245 



10. Propagation of insects 248 



11. Propagation of leeches 248 



12. Propagation of mollusks 248 



13. Propagation of corals 248 



14. Propagation of sponges 248 



CATALOGUE OF ILLUSTRATIONS OF THE ECONOMICAL INVERTEBRATES 

 OF THE AMERICAN COASTS. BY W. H. DALL. 



MOLLUSCA CEPHALOPODA. Squids and Cuttles 251 



MOLLUSCA GASTEROPODA. Sea-Snails, &c 251 



A. Useful 251 



1. Used for food or bait 251 



2. Useful by producing pearl-shell, &c 251 



3. Affording cameo and porcelain stock 252 



4. Used in Indian trade 252 



5. Affording dyes'uffs 252 



6. Affording bird-lime 252 



B. Injurious . 253 



1. By destroying food-producing mollusks or shell-fish, such as clams, 



mussels, oysters, and razor-fish 253 



2. Injurious by destroying vegetable substances and garden plants 253 



MOLLUSCA ACEPHALA. Bivalve Shellfish 253 



A. Producing food or used as bait -. 253 



1. Series illustrating distribution and geographical varieties 253 



OSTREA VIRGINICA, Gnielin. East American Oysters 253 



OSTREA LURIDA, Cpr. West Coast Oysters 253 



1. Extra limital 254 



2. Series illustrating culture and individual variations 255 



OSTREA VIRGINICA, Gmelin. East American Oysters 255 



a. Growth. 1-20 years old 255 



1). Peculiarities of form and growth 255 



c. Enemies and parasites 255 



* * * Other Uvalves. 



A. Affording or available for food or bait 256 



B. Useful or ornamental bivalves other than those affording food 256 



a. Pearl-producing 256 



1. River mussels 256 



2. Marine pearl-shells - 258 



1. Otherwise useful 258 



C. Injurious bivalves 258 



a. Destroying submerged timber 258 



1. Specimens of wood showing ravages 258 



D. Prepared foods 259 



