NATURE-STUBY LESSONS. 17 



30. (a) Describe the nails. 

 (d) Infer their use. 



(c) Observe the areas shown by different colors in 



the nails. 



(d) Why does it hurt to wound the nail at its base 



and not to pare it at the outer end ? 



31. (a) What parts of the foot of the horse, the cow, 



the dog, the cat, and the hen, respectively, 

 correspond to the nails ? 

 (^) Compare each in shape and use with the nails. 



E. The Circulation. 



32. Trace the veins in your wrist and hand or observe 

 them in an aged person's hands. 



33. (a) Count the pulsations in the artery in the wrist. 

 (3) Try to feel the pulse in the middle of your palm. 

 (c) Place your hands in such position that you can 



feel the wrist pulse of your left hand with 

 the thumb of your right hand and your heart 

 beat at the same time with the fingers of 

 your right hand. From this experiment 

 infer the cause of the pulse. 



VIII.-THE OAT. 



Observe the cat at your home. Notice how it eats and drinks ; its play- 

 fulness ; its gentleness ; its fondness for those who care for it ; its various 

 movements, as walking, springing, and climbing ; its fondness for a cosy 

 spot ; the sounds it makes and on what occasions ; its treatment of its 

 young ; its favorite positions when it sleeps, when it watches for its prey, 

 etc. 



A. Its Food and Drink. 



I. (a) What kind of food and drink does the cat like? 

 ((5) How does it get meat off a bone ? 



(c) How does it drink milk ? 



(d) Compare it with the dog in these respects. 



