MEASURING THE FOREST CROP 117 
one upon which whole books have been written, so noth- 
ing more than a very brief discussion has been given. 
The simple points mentioned in this chapter should give 
an insight into the more important methods of measur- 
ing the forest crop, and the methods of sealing timber, 
cruising, etc., should make stories of the logging camp 
and the forest much more enjoyable. 
