TABLE OF CONTENTS. XIII 



Pago. 



III. Materials employed in the arts and manufactures — Continued. 



11. Hoofs and claws 78 



12. Baleen 78 



13. Tortoise-shell 78 



14. Scales 79 



15. Pearl 79 



16. Shells 80 



17. Coral 81 



18. Infusorial earth 82 



19. Other materials derived from invertebrates 82 



**Flexible materials. 



20. Leather 82 



21. Hair and wool, (see also 8) • 85 



• 22. Quills 86 



23. Feathers 87 



24. Gelatine and isinglass 88 



25. Flexible materials from insects and mollusks 89 



26. Sponges 89 



***Fluids and soft materials. 



27. Oils and fats 90 



28. Perfumes 92 



29. Coloring materials 92 



30. Chemical products and agents employed in the arts and medicine 93 



31. Fertilizers 96 



32. Limes, (see under 30) 96 



33. Other materials 96 



Section E.— PROTECTION AND CULTURE OF USEFUL ANIMALS. 



I. Investigation 97 



1. The methods of the United States Fish Commission 97 



II. Protection 97 



2. Preservation of game and fish 97 



3. Care of animals in captivity.... 98 



4. (Accessory.) Enemies of useful animals 98 



III. Propagation 98 



5. Propagation of mammals 98 



6. Propagation of birds 99 



7. Propagation of reptiles 99 



8. Propagation of amphibians 99 



9. Propagation of fishes 99 



10. Propagation of insects 101 



11. Propagation of leeches 101 



12. Propagation of mollusks 101 



13. Propagation of corals 101 



14. Propagation of sponges 101 



ALPHABETICAL INDEX 103 



