A MANUAL OF BOTANY 



29 



What important home articles are made of wood? 



What substitutes may be used instead of wood ? 



Forestry. What is the definition ? The government has 

 many Forest Reserves. What is their object ? Who are 

 Forest Rangers, and what are they paid ? Where are there 

 Schools of Forestry, and what do they teach young men to 

 do ? What is Burbank's walnut ? What worth has the 

 eucalyptus ? 



If you are 18 and planted 10 acres to eucalyptus and 

 Burbank's walnut, 5 of each, 400 trees to the acre, and 

 these in 12 years gave you clear logs that would square 

 12 in. by 50 ft., worth to-day (1910) $150 a thousand 

 feet, how much would your trees bring you when you were 

 30 years old? 



8. Review Table of Stems 



Use each stem that has been studied, and fill out the 

 columns properly. 



Name 



Ordinary Stkm^ 



Bark 

 color 



Bii.l 

 color 



Bua 

 arrange- 

 ment 



Modified Stems 



Shape 



Where 

 growing 



Purpose 



9. SUPI'LEMENTARY EXERGISE. PuKPOSE OF StEMS 



It ought to be constantly kept in mind that ordinary 

 stems are leaf-bearing structures, and that the arrangement 

 of the buds and branches aiul the general habits of the 

 plant are very largely an effort to obtain the best -possible 

 light relation for the leaves. Stems, of course, have many 

 other purposes, which you are supposed to have stated in 

 the review table. 



