338 NATURE-STUDY REVIEW 



4. Shrubs are a group of plants; a tree is one plant. 



5. Shrubs have many limbs. 



6. Shrubs are bushier than many small trees. 



7. Shrubs never grow into trees. 



8. Shrubs are bushes and do not grow very tall at any time. 



9. Small trees will grow taller; bushes will not. 



10. Shrubs are short chunky bushes; small trees are tall and 

 slender after the shape of a large tree. 



11. Shrubs contain more leaves and are larger in circtmiferenee. 



12. Shrubs are thicker and branches close to the ground. 



13. Shrubs are many trunked plants and small trees have one 

 trunk. 



What is the Difference Between the Lung Capacity and 



THE Capacity of the Lungs? 

 Unfortunately there has developed in physiology a difference in 

 these two expressions. By capacity of the lungs is meant the 

 total amount of air that the lungs are capable of holding at one 

 time bat lung capacity means the amount that one can exhale 

 at one time. There is always a certain amount of air left in the 

 remote parts (not only the bottom part), of the lungs. 



If any of the Following Statements are Incorrect Give 

 THE Correct Form 



1. Remove the shell of the oyster and look at the animal. The 

 shell is the skeleton of the oyster. The internal or soft parts 

 are only a part of the animal. 81 substituted the word fish for 

 animal. The oyster has no back-bone and is not a fish. Amongst 

 the 281 examined only 12 recognized that the whole thing is the 

 animal. Amongst the university freshmen five men and two 

 women noted the difference. 



2. Earthworms rain down — It would be nearer correct to say 

 that earthworms rain up, for, as 153 stated earthworms come out 

 of the ground when it rains. Five individuals changed the word 

 rain to reign. This may be a result of the tendency of some 

 schools to deal with words rather than ideas. 



3. Night air is ''unhealthy — Nearly three-fifths of those 

 examined recognized that night air is as "healthy" as day air. 



4. Flies carry typhoid fever — 76 gave the correction that flies 

 carry typhoid fever germs which cause the disease. They do not 

 carry the disease. One answered, — "Right — let's kill 'em." 



