Throughout the mountains of Utah the snowshoe rabbit (Leputs americanus) is very common, and extensive damage is often noted in natural coniferous stands as well as in plantations made by the Forest Service. It is safe to say that in some of the denser areas of reproduction less than io percent of the trees are free from injury, while a fairly large proportion are so severely injured as to be of slight future commercial value. This damage has been studied in some detail in the Wasatch Mountains both in the vicinity of the Cottonwood Nursery on the Wasatch National Forest 25 miles southeast of Salt Lake City and on the Manti National Forest near the Great Basin Experiment Station io miles east of Ephraim, Utah. From the canyon bottoms to the highest elevations at 9,0oo to io,ooo feet, wherever there is sufficient food and brush or timber to afford protection, rabbits are present. During the spring and summer they are more or less scattered, but on the approach of winter, after the first few heavy snows, they congregate in the thickets. A person might spend the entire summer in such a locality inhabited by rabbits and not see a single one except occasionally on a road or trail after sundown. The fact, however, that they are present in large numbers may readily be verified by examining a dense clump of tall brush or of timber after there is snow on the ground. Well-beaten trails radiate in all directions. While it is impossible to give an estimate of the number on a given area, it can be stated that as high as I5 were killed in the fall of i9i6 on a comparatively narrow strip of dense brush Do yards wide and about 400 yards long, adjacent to the Cottonwood Nursery. While this did not represent the total number on that particular area it, no doubt, included the majority of them. The natural enemies of the snowshoe rabbit are the coyote, wild cat, eagle, hawk, owl, and weasel, the former hunting them most persistently. It is reasonably certain that the rabbits will increase as the coyotes decrease and that the injury to conifers will therefore increase. With the destruction of a large number of coyotes on the National Forests the rabbits have had to be controlled, especially in the vicinity of plantations. The low bushy form, or the entire absence of a definite leader among conifers up to about 8 feet in height, indicate the destructive work of rabbits in eating off the terminal shoot and frequently the top lateral twigs. Trees