Geographic location p.9. -- Physical characteristics p.10. -- Flora and fauna p.12. -- Migration, distribution and location p.17. -- Health p.19. -- Dialect and education p.21. -- Economic factors p.22. -- The Yaguas and the Ticunas p.25. -- The pelazon p.28. -- Gabriela Marin p.48. -- Consideration and conclusions p.60.