The work of the destruction of predatory animals has been transferred to the hands of the Bureau of Biological Survey. Formerly special Forest Service hunters were detailed to hunt the animals, and these men used to kill about 4,000 a year. The Biological Survey, however, still furnishes traps, ammunition and poison for the destruction of predatory animals to Forest officers, who do this work in connection with their regular duties. Bears, coyotes, mountain lions, lynxes, wildcats, and wolves are the animals that do the most of the damage. What makes the problem a difficult one is that the wolf and the coyote, the two species which do the greatest damage to game and domestic stock, are transient visitors on the Forests which frequent the Forests only when game and stock is most abundant. They are bred, born, and spend the greater portion of their lives in the foothills outside of the National Forests. Under these conditions the animals killed on the Forests are quickly replaced by others from outside. For this reason the matter was handed over to the Biological Survey, which will destroy these animals throughout the public domain and the results will be much more permanent and effective. Besides the investigations carried on by the Forest Experiment Stations many studies are carried on dealing with forest products. The purpose of the Branch of Forest Research of the Forest Service is to promote the most profitable and economical utilization of forest products by means of experiments and investigations. The work of the Branch falls into three divisions: National Forest utilization, the work of the Forest Products Laboratory, and industrial investigations.