212 



INDEX 



Vegetables, 54 



Veins, 71, 72, 81 



Venous system, 73 



Ventilation, 44 



Ventricles, 69, 70, 72, 74, 157 



Vermes, 162-172 



Vertebrae, 105 



Vertebral column (see Spinal 



column ) 

 Vertebrata, 184-188 

 Vibrations, 13, 143, 159, 162, 



175, 178 

 Villi, 58, 59 

 Voice, 42 



Voluntary muscle, 100 

 Vorticella, 10, 133 



Wandering jew, 7 



Warm-blooded animals, 188 



Wasp, 184 



Waste products, 46, 59, 81, 131, 



160 

 Water, 13, 14, 15, 16, 17, 18, 



20, 22, 29, 31, 32, 33, 43, 51, 



52, 55, 60, 61, 65, 190 

 Water-vascular system, 150, 



151 

 Web, 181 



Weight of air, 20 

 White blood corpuscles, 76, 77, 



78 79 

 Wings, 182, 183 

 Windpipe (see Trachea) 

 Wood, 17 



Work, muscular, 53 

 Worms (see Vermes) 



