VERTEBRATED ANIMALS. 



301 



and at its lower part the Peyerian glands ; large intestine, showing the 

 various glandular follicles : Respiratory Organs ; lungs of Mammals, 

 Birds, and Eeptiles ; gills and swimming-bladder of fish ; Glandular 

 Organs; liver, gall-bladder, kidney, parotid : Generative Organs; ovary 

 of Toad ; oviduct of Bird and Frog ; Mammalian placenta ; uterine and 

 foatal cotyledons of Ruminants : Organs of Sense ; retina, iris, choroid, 



FIG. 487. 



Arrangement of the Capillaries on the walls of the Air-cells of the Human Lung. 



and ciliary processes of eye, pupillary membrane of foetus ; papillae of 

 tongue ; mucous membrane of nose, papillae of skin or finger ; Tegumen- 

 tary Organs ; skin of different parts, hairy and smooth, with vertical 

 sections showing the vessels of the hair-follicles, sebaceous glands, and 

 papillae; matrix of nails, hoofs, etc. : Tissues; fibrous, muscular, adipose, 

 sheath of tendon : Nervous Centres ; sections of brain and spinal cord. 



