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OUR FORESTS 



Conclusion. — 1 . Which woods are useful for skeletons of houses ? 



2. Which are useful for trim? 



3. Which are useful for paper making? 



4. In general, which are more used, soft or hard woods? 



Problem, 83 : Museum trip for study of woods. 



Materials. — Collection of commercial woods, or trip to a 

 museum. 1 



Method and Observations. — Examine specimens of the most 

 important commercial woods. Note such woods as : 



Describe any six of the above, telling : 



(a) The region where the trees grow. 



(b) The shape of the leaves. 



(c) The color of heart and sap woods. 



(d) Comparative weight of the wood. 



(e) Rapid or slow growth. 

 (/) Economic value. 



Examine a specimen of a section of any big tree, such as a 

 California big tree. Notice the so-called annual rings in the 

 wood. About how old was this tree when it was cut? 



1 A study such as here outlined may be made at any well-equipped city museum. 

 Work of this nature may also be done in school by means of loan collections. 







