The Evolution Theory, Vol. 2 of 2

This comprehensive volume delves into the biological foundations of evolution, presenting the ideas of a leading early‑20th‑century zoologist. It begins with an extensive look at regeneration, tracing how organisms—from simple hydroids to amphibians and earthworms—repair and rebuild lost parts, and why this ability varies across the animal kingdom. The discussion then moves to the role of parental contributions in shaping offspring, examining how functional traits might be transmitted across generations.

The work widens its scope to address germinal selection, the biogenetic law, and the significance of sexual mixing (amphimixis) in creating new species. Detailed chapters explore in‑breeding, parthenogenesis, environmental influences, and the mechanisms by which isolation can foster speciation, all supported by vivid plates of insects, crustaceans, and marine larvae. Readers gain a clear, illustrated guide to the forces that drive both the emergence and extinction of species, making complex concepts accessible without sacrificing scientific depth.