SLEEP. 423 



A. Because it produces prussic acid, 

 which destroys their nervous system. 



Q. Why is strong GREEN TEA UN WHOLESOME? 



A. Because it contains prussic acid, 

 which destroys the nervous system. 



Q. Why is a DEAD man TALLER than a living 

 man? 



A. Because at death the CAKTILAGES 

 are relaxed. So, also, after a night's 

 rest, a man is taller than when" he went 

 to bed. 



Q. Wliat is SLEEP ? 



A. Sleep is the rest of the brain and 

 nervous system. 



Q. Why can we not SEE, when we are asleep 

 with our EYES OPEN ? 



A. Because the " RET'INA of the eye" 

 is inactive and at rest. 



Q. Why can we not HEAR in sleep P 

 A. Because the drum or " TYMPA- 

 NUM of the ear" is placid and at rest. 



Q. Why can ice not TASTE when we are asleep ? 



A. Because the nerves at the end of 

 the tongue (called papillae) are inactive 

 and at rest. 



Q. Why can we not FEEL when we are asleep ? 



oa2 



