. Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean . eans of knowing at present. We did not see it elsewhere than in the Cascade mountains between latitude 44° and 46°;it is found, however, north of the Columbia, and probably exists along the summit of the Cas-cade range as far south as Mount Pitt, about 42° 40. I did not see it in the Willamette valleyor in the Coast mountains ; it is probably confined to the higher portions of these latter moun-tains, if, indeed, it exists on them. The w
. Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean . eans of knowing at present. We did not see it elsewhere than in the Cascade mountains between latitude 44° and 46°;it is found, however, north of the Columbia, and probably exists along the summit of the Cas-cade range as far south as Mount Pitt, about 42° 40. I did not see it in the Willamette valleyor in the Coast mountains ; it is probably confined to the higher portions of these latter moun-tains, if, indeed, it exists on them. The wood is white, and would, perhaps, be used for timber if it were accessible. As a timbertree, it is, however, far inferior to many other trees which grow in the valleys and on the coastof Oregon. Cones of P. amabilis were brought home, and seeds have been distributed with a view to itsintroduction into cultivation. Should this effort be unsuccessful, it may be obtained fromEngland, where it has been grown from seeds sent home by Douglass. I very much regretthat it was never convenient for the artist of the party, Mr. Young, to take a portrait of this. BOTANY. 53 tree ; though one would search in vain among cultivated trees for any which should rivalin the symmetry of its form, the luxuriance of its foliage, and the size and beauty of its cones,the western silver fir. September 17.— * * On the little prairie which borders one side of the lake are a few trees ofthe silver fir. With a strong and unimpeded growth, it has here attained a magnitude I havenot elsewhere seen. It rises in denser and more symmetrical cones than any other conifer wehave met with. The altitude of the largest is more than a hundred feet; the base of the coneformed, the branches resting on the ground not more than twenty. The branches are so thickas to prevent all access to the trunk without a vigorous use of the hatchet; and during thepouring rain of the last four day3, we have always been able to find
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