The Natural History of Animals: The Animal Life of the World in Its Various Aspects and Relations, 1. köide

absent adapted Africa Amphibia animals aortic arches arrangement artery Asia auricle Australia backbone Bats beak birds blood-vessels body bones bony brain breathing Britain British species cavity central cerebral hemispheres characteristic claws cloaca colour Common consists coracoid creatures crocodile digestive digitigrade digits distinguished dorsal endoskeleton Europe external feathers flattened fore-limbs forms frog front genus gill-slits gills glands glottis habit hair head hemisphere hind-limbs Hippopotamus horny humerus Hyæna impure blood incisors includes intestine kind known large number legs limbs lower jaw lungs Mammals membrane Monkeys mouth muscles native neck nerves North occipital condyle Old World pair peculiar plumage possess present Prototheria range regards regions Reptiles resemble ribs rounded Salamander Sand Lizard seen side skeleton skin skull slender smaller snakes snout South America sternum structure surface tail teeth toes Tortoise trunk tube tympanic membrane ulna upper ventricle Vertebrates wide distribution wings