FAEM FORESTRY 



257 



I h<- forest has been cut away, and explain how the soil 

 is carried to the streams, and its effects upon them. 



3. Find trees of virgin growth and also the second 

 growth. Note any dangerous firetraps. 



4. If a freshly cut stump or log can be found, 



FIG. 76. CATALPA GROVE THREE YEARS OLD 



count the rings of growth and determine the age of the 

 tree. 



5. Make a few estimations of the diameter and 

 heights of the largest trees. Pupils might calculate the 

 number of cubic feet of timber in a large tree, and by 

 squaring the diameter in inches, minus four, it becomes 

 board measure in a sixteen-foot log. 



