Condensed Chart of Development of the Main Line of the Animal Kingdom leading to Man. | | ORGANS | MOST RAPIDLY PHYLOGENETIC | | APPROACHING | ADVANCING SERIES. | NEW ATTAINMENTS. | CULMINATION. | ORGANS. -------------+----------------------------+---------------+-------------- Amoeba. | Cell. | | -------------+----------------------------+---------------+-------------- Volvox. | Somatic and reproductive | | Reproductive. | cells | | -------------+----------------------------+---------------+-------------- Hydra. | Simple reproductive organs.| | Reproductive. | Gastro vascular cavity. | | | (Tissues). | | -------------+----------------------------+---------------+-------------- Turbellaria. | D | Complex reproductive | Reproductive. | Digestive. | e | Organs. Supra-oes. | | | v | Ganglion and cords. | | | e | Sense organs. | | | l | Body wall.ns. | | | o | | | | p | | | -------------+---|------------------------+---------------+-------------- Annelid. | O | Perivisceral Cavity. | | | r | Intestine. Circulatory | | | g | system. Nephridia. | | | a | Visual eyes. | | | n | | | | s | | | -------------+---+------------------------+---------------+-------------- Primitive | Notochord. Fins. | | Vertebrate. | | | -------------+----------------------------+---------------+-------------- Fish. | Backbone (incomplete). | Digestive. | Muscles. | Paired Fins. Jaws from | | | Branchial Arches. Simple | | | heart. Air Bladder. Brain. | | -------------+----------------------------+---------------+-------------- Amphibian. | Legs. Lungs. Cerebrum | | Muscles. | increases from this | | | form on. | | -------------+----------------------------+---------------+-------------- Reptile. | Double heart. | | Muscles and | | | appendages.