8 NATURE-STUDY REVIEW [15:1— Jan., 1919 



2. Have them study the structure of the cone by cutting it length- 



wise into two equal parts. 



3. Determine the position and number of seeds in each half. 



What is the largest possible number? How are young pine 

 cones pollinated ? 



4. How are pine seeds disseminated? 



5. In some bird book, look up cross bills to learn how they 



remove pine seeds from the cone. 



HI 



At the close of the pine study go to some reference book to 

 answer the following questions? 



1. Where are the large pine forests of the United States? 



2. Which species prevails in each area? 



3. What uses are made of pine lumber? 



4. What products other than lumber are derived from pine trees? 



5. Read about the turpentine industry. 



6. Are there any large areas of evergreen forests other than 



pines? If so, where are they, what are the prevailing 

 species, and what use is made of them? 



7. Read abbut the wood-pulp industry. 



8. Look up California Redwoods. 



References. 



1. Rogers: Tree Book. 



2. Dorrance: Story of the Forest. 



3. Hough: Trees of the Northern United States. 



4. Keeler : Our Native Trees. 



