GENERAL REPORT. 9 
is coarse-grained. Where nothing better offers, it may be sawed into 
boards. 
Pinus flexilis, James.—(‘‘ American Cembran Pine.”)—Attains in Cen- 
tral Colorado a height of 50 feet in its best situations, with a diameter of a 
foot and a balf. The shape and color of the cones as well as the pliable 
character and white wood of the young shoots are, as Dr. Parry has 
already noted, strikingly suggestive of the White Pine of the East. The 
extremely slow growth of this tree is remarkable. The trunk, as a rule, 
is quite too full of knots to make good boards, though there is no reason 
why the less stunted specimens might not be used for coarse, heavy 
timbers. | 
Pinus Balfouriana, Murr.—This tree is seldom, if ever, found at an alti- 
tude less than 9,000 feet above the sea. - It is the last to survive the expo- 
sure on the mountain-tops; and finding a pine at timber-line is presumptive 
evidence that it is this species. It grows sometimes 35 feet high and 18 
inches in diameter; has little value as a timber. 
Pinus edulis, Engelm—(Pifion Pine of Southern Colorado.)—The 
Pinus edulis is the one so frequently alluded to by Frémont as the Nut 
Pine. It furnishes capital fuel, having enough of the terebinthinate in 
it to make an intensely hot fire. This is the most important use to which 
the tree is applied. It ranges from the hills near Cafion City south, not 
going into the mountains west until it has crossed the valley of the Arkansas 
southward. 
Pinus ponderosa, Doug]—(‘‘Yellow Pine” of the West.)—This is the 
largest and most valuable of the trees in the region surveyed during the 
season of 1873. It makes the best lumber the country affords, and, besides, is 
“quite abundant, though this fact will probably be the reason why it will be 
the first to be extirpated before the growing needs of an increasing popu- 
lation. In the valley of the Conejos River, it was found growing 60 to 70 
feet high, with a diameter of nearly three feet. 
Abies Douglasii, Lindl—Tree 60 to 90 feet high, though becoming 
much smaller as it ascends the mountain sides. As a timber it is only mid- 
dling in quality. It does well for beams, &c. It becomes much larger and 
more valuable on our northwest coast and has fewer knots than on the 
