to comprise any considerable reserve. One of these is the lower Liard Valley, from below Nelson Forks to Fort Simpson, and the other is along the Slave River betw Fort Smith and Great Slave Lake. The lower Liard Valley has been described by observers as appearing heavily wooded, with sizable blocks of merch- antable timber, (spruce, aspen, and black poplar) noted particularly along the bends and on islands in the river. The topography of the Liard Valley between Nelson Forks and the Nahanni is broken and hilly and, since the drainage is well developed, it is likely that some of the timber observed in the tributary valleys and ravines is also merchantable. Some good timber is reported in the lower South Nahanni Valley. Timber drawn from the lower Liard section may be floated downstream to Fort Simpson and transported thence to downriver points. Of the section along the Slave River, J. Lewis Robinson, Geographer of the Northwest Territories and Yukon Administration, in a paper prepared for the Interdepart- mental Committee on Agriculture in Northwestern Canada, wrote: een Some of the chief stands of merchantable timber in Mackenzie District are found along the Slave River. There are also many young stands of high potential value which make the strip an import- ant one for future development. Most of the timber used at Yellowknife and Fort Resolution has been cut in this area and floated downstream. Future land use practices will undoubtedly maintain many of these good agricultural soil areas for reserve timber. Small patches of timber occur along practically all the Tivers within the areas that support the growth of trees of economic size. In the Mackenzie Lowland between Fort Simpson and Fort Norman, patches of merchantable spruce sufficient for local use occur along the banks. There are aiso some stands of aspen poplar. In the great hinter- land of muskeg, rock, and scrub, the sparse forests yield little except wood for the uses of trappers and the aboriginal population, and their main value lies in the fact that they are vital for the conservation of game, fish, and fur. An empirical figure of 500,000,000 ft. b.m. has been allotted in the estimates for the Mackenzie District. This figure includes timber of a class not regarded as merchantable in lands of forest plenty, such as the lower Liard, South Nahanni, and Slave Valleys. On this point, it is pertinent to suggest that the lower Liard forest, with its extensions up the valleys of the Liard and Fort Nelson Rivers in British Columbia and tributary valleys in Yukon, is a vital factor in the future economy of the Mackenzie Valley. The mineral development of this district, with its expected consequent growth of population, will be accompanied by a demand for forest products that the lower Liard forest and its extensions are well situated to serve. Indeed, these forests are the only substantial nearby source of timber for the lower Mackenzie basin. Their conservation and development should be one of the first responsibilities of the State in the Mackenzie District. [56 } TABLe V NORTH PACIFIC REGION Total Merchantable and Accessible Merchantable Timber by Forest Districts or Territories : — ~ Total Meee ase Accessible 2 Merchantable (Thousand Board Feet) Prince Rupert District (within North PacihcsRe pion) sae ence eee ee 44,874,000 20,923,000 Fort George District; .........-. ane 32,910,000 8,395,000 Northern British Columbia: eEpiontACe A pone e 587,200 Resion: Bee eee eee 941,000 INS Ce soc so esades. 1,954,400 ING yo Doe ohana sues ae 614,900 4,097,500 | say 4,100,000 Total British Columbia (within North a PaACihics RESion) apa een 81,884,000 29,318,000 say, 29,300,000 NorthernsAllberta 94.0... 90-8 oe ee 10,500,000 2,000,000 SYA On ee eae Se omc eine 2 5/,00L000 5 |e eee MackenzienWalleyar sees ease ee 500:000)|ss4 eee 31,300,000 | 98,584,000 In addition, it has been indicated that.there are at least 6,000,000,000 board feet of aspen, variously styled “poplar”, “balsam poplar’, “cottonwood”, etc., in the section of northern Alberta that lies within the Region, and it is the opinion that there is at least as much more in the com- bined northern British Columbia, Yukon, and Mackenzie Valley sections. It would thus not be unreasonable to suggest 12,000,000,C00 board feet as a fair figure for the merchantable aspen of the North Pacific Region. As this class of timber is generally regarded as too heavy for “practical stream driving, perhaps less than 10 per cent— say, 1,000,000,000 feet—may be taken as presently accessible. Tt is concluded that of the more than 98,000,000,000 board feet of merchantable coniferous timber in the North Pacific Region, about 67,000,000,000 feet is at present inaccessible. It will be noted that in the above discussion more detailed reference has been made to the more remote forests of the Region, in the far northern section of British Columbia, in northern Alberta, and in Yukon, than to the extensive and largely accessible forests in the coastal and interior sections of British Columbia. These latter forests are comparatively well known and estimates of their potential are definite. It is felt that apart from whatever of interest may be found in this discussion of the forests of the North Pacific Region, its chief value lies in its attempt to furnish some picture and make some appraisal of the little known forests of the Canadian northwestern frontiereea