Degeneration: A Chapter in Darwinism

admitted adult form adult structure animalcules ape-like ancestors appear Ascidian tadpole atrophy axolotl BALFOUR STEWART Barnacle become body BRAIN MOUTH branch breeder cerebral eye civilised cloaca common frog compared complex condition creature Crown 8vo Crustacean Darwin Darwinian theory degene egg-cell elaborate embryo evidence evolution exhibit explanation F.R.S. With Illustrations fact family-tree forms of animals genealogical tree gill-slits gills gradually guess hypothesis of degeneration individual instance of Degeneration intestine kind knowledge language LARVA lative legs LEPAS Lernæocera living things MACMILLAN modified descendants Molluscs myelonic natural selection naturalists Nauplius NOTOCHORD numerous Illustrations observation optic nerve order of nature organs original pair of limbs parasitic pedigree Peneus Phallusia Phantasie phases possible present day produce Professor question recapitulative represent retina Rotifers Sacculina scientific shrimp simpler SIR JOHN LUBBOCK slits soul species SPIRACLE struggle for existence super-larvation supposed tail theologian tion true truth varieties Vertebrates whilst worm young Ascidian