276 



INDEX 



Scales of fish, 116 



Skeleton of bird, 192 

 of frog, 146 

 of rabbit, 214 

 of turtle, 170 



Snail shell, 270 



Spider, 48 



Sponge, 230 



Sprays, 66 



Squash bug, 96 



Starfish, 243 



Sunfish, 116 



Turtle, 152 

 arteries of, 152 



Turtle, circulatory organs of, 162 

 digestive organs of, 164 

 ears of, 156 

 eyes of, 156 

 field study of, 154 

 heart of, 162 

 kidneys of, 168 

 limbs of, 156 

 morphology of, 156 

 muscular system of, 168 

 nervous system of, 168 

 reproductive system of, 168 

 respiratory system of, 166 

 shell of, 158 

 skeleton of, 170 



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