10 



MISCELLANEOUS CIRCULAR NO. 61 



upper limits of tree growth. At lower altitudes it grows in mixture 

 with Engelmann spruce, lodgepole pine, and other species. It fur- 

 nishes a poor quality of timber, for as the trees reach maturity they 

 are likely to be defective. Combined with Engelmann spruce, 

 Alpine fir makes satisfactory paper pulp. 



The white-bark pine is usually a low-growing, many-branched tree. 

 It grows on the rocky ridges in the high timber-line country in 

 practically all parts of the State. Valuable mainly as watershed 

 protection, it is also of some value for fuel and mine timbers. 



Table 4. — Stand of national forest timber by forests and species 



Forest 



West- 

 ern 



white 

 pine 



West- 

 ern 



yellow 

 pine 



Doug- 

 las fir 



Lodge- 

 pole 

 pine 



Larch 



Cedar 



Spruce 



Other 



Total 











Millions of board feet 











1. ?21 



L273 



383 



45 



136 



8 



1,057 



121 



568 



11 



782 

 783 

 123 



1,280 

 109 



1,539 

 184 



144 

 37 

 12 

 1,452 

 20 

 999 

 60 



454 

 411 

 123 

 327 

 222 

 49 

 216 



343 

 34 

 285 

 14 

 114 

 488 

 109 



650 

 41 

 44 



227 



197 

 1,099 



295 



802 

 634 

 225 

 740 

 201 

 1,976 

 101 



4,441 





3,349 



Kaniksu i 



1,203 





5,097 



Pend Oreille 



271 



58 



401 



1,255 





6,776 



St. Joe ... 



1,377 







Total, north Idaho 



3,607 



1,946 



4,800 



2,724 



1,802 



1,387 



2,553 



4,679 



23, 498 







2,026 



844 



55 



95 



528 



2,139 



200 



38 



1,000 



1,658 



331 



509 



584 



256 



21 



33 



618 



1,891 



191 



21 



500 



356 



121 



523 







25 

 21 

 12 

 4 

 566 

 36 



225 



26 



19 



540 



936 



160 



22 



983 



93 



50 



76 



170 



3,376 











123 



Caribou 1 ... 











159 



Challis 











1,690 



Idaho.. . 





2,746 



100 





8,378 



Lemhi . 





587 



Minidoka 1 











81 



Payette.. . . 





1,876 



1,060 



90 









4,309 



Salmon ... 









132 

 14 

 90 



3,299 



Sawtooth 









606 



Targhee l . 









1,198 



Weiser 





770 







1,524 

















Total, south Idaho 





8,568 



7,981 



4,531 



100 





900 



3,250 



25, 330 









Grand total 



3,607 



10, 514 



12, 780 



7,255 



1,902 



1,387 



3,453 



7,929 



48, 828 







Figures apply only to the portion of the forest in Idaho. 



FORAGE RESOURCES 



Out of a total of 2,250,000 sheep and 510,000 beef cattle in the 

 entire State of Idaho, approximately 1,425,000 sheep and 160,000 

 cattle (this figure also includes 2,000 horses) are grazed under per- 

 mit on the national forests each year. Of these, about 1,360,000 

 sheep and 153,000 cattle and horses are carried by the national for- 

 ests of the southern part of the State, which are more open than 

 those of northern Idaho and include great areas suitable for live- 

 stock. (Figs. 5 and 6.) 



Unregulated grazing may be very destructive, for concentrating 

 too many animals on a limited area kills the forage as well as the 

 young trees that must be preserved in order to maintain the forest. 

 Accordingly, on the national forests all grazing is carried on under 

 regulations that limit the number of stock on each area. Rules for 

 the management of the range stock are also in force, which aim to 



