A Short History of Biology: A General Introduction to the Study of Living Things

action activity anatomy animals appearance Aristotle arteries became become biological birds blood body called cell century certain changes characters Class classical collection comparative complete conception contains creatures Darwin demonstrated described disease distribution doctrine early effect embryo evidence examination existence experiments fact female fertilized figures fish flowers followed forms function further give Greek heart idea illustrated important individual influence insects interest Italy knowledge known later learned less lines living living things male matter means mechanism method microscope minute movement naturalists nature nervous observations organisms origin passed phenomena physiology placenta plants present produced protoplasm regarded relation scientific seen separate sexual showed species stage structure substance theory thought tion tissues true University veins Vesalius whole young