INDEX. 



633 



Wheel, 469 



"Wheel Animalculae, 306 

 Whelk, 245 



Whirlwig-beetle, 22, 292 

 Whispering Gallery, 526 

 Wind, 442 

 Window, 190 

 Woodpecker, 256 



Woolly Bear, 110 

 Wurble-fly, 396 



Zarabatana, 76 

 Zoetrope, 305 

 Zostera marina, 473 



THE END. 



