Contents -- Acknowledgements -- Introduction -- Chapter One Darwin in Argentina -- 1. The Crisis of 1874 -- 2. Darwinism Ascendant -- 3. Darwinism in Disarray -- Chapter Two Conflicting Systems -- 1. Progress or Regress? Evolution or Extinction? -- 2. Unity or Diversity? -- 3. Natural Selection vs. Aesthetic Selection -- 4. The Question of Spiritualism. The Philosophical Crisis of Darwinism -- Conclusion -- Chapter Three Francisco Javier Muñiz (1795-1871) -- The Muñi-Felis Bonaerensis (1845) -- Chapter Four Hermann Burmeister (1807-1891) -- History of Creation (1870) -- Chapter Five Francisco P. Moreno (1852-1919) -- Letter to His Father, Francisco F. Moreno (1875) -- Letter to His Father, Francisco F. Moreno (1875) -- Chapter Six Domingo F. Sarmiento (1811-1888) -- Sheep Growing. Letter to the Editor of The Boston Daily Advertiser, September 19, 1865 -- Lecture on Darwin (1882) -- Chapter Seven Eduardo Holmberg (1852-1937) -- A Struggle between Two Parties (1875) -- Charles Robert Darwin (1882) -- Chapter Eight Florentino Ameghino (1854-1911) -- Phylogeny-The Principles of Transformationist Classification Based on Natural Laws and Mathematical Proportions (1884) -- Vision and Reality (Allegory for Phylogeny, 1889) -- Chapter Nine José Ingenieros (1877-1925) -- Simulation in the Struggle for Life (1900) -- On the Inferior Races (1905) -- Chapter Ten Carlos Octavio Bunge (1875-1918) -- Travels through My Lineage (1908) -- Bibliography -- Index.