38 



THE CONIFERS OF THE NORTHERN ROCKIES. 



small protuberance, similar to that found in the spruces, but not so 

 prominent. The fruit of the hemlocks is a small cone with thin scales 



FIG. 21. Mountain, or Black Hemlock, in the St. Joe Mountains of northern Idaho; on the 

 extreme left an Alpine Fir; altitude about 6,000 feet. 



and very inconspicuous bracts. The seeds mature in one year, are 

 small, light, and well winged. The bark of hemlocks is dark colored, 

 hard, and rough ? and less than '2 inches in thickness. The bark, 



