2 BULLETIN 1225, U. S. DEPARTMENT OF AGRICULTURE. 



Many obstacles to the production of camphor in commercial quan- 

 tities at a reasonable price were soon encountered, the most serious 

 of which was the injurious effect on the trees of the usual method of 

 pruning or harvesting the branches. The practice was to cut the 



Fig. 1. — Camphor tree showing characteristic habit of growth. 



branches from the top and sides of the tree each year, the cuts bemg j* 

 made without regard to the nodes. In many instances this left from 

 1 to 12 inches of the branch extending beyond the node. Since 

 camphor trees, except in rare cases, do not put out new branches 



