American Forest Trees Part 12

is added to the name is not clear. Similar mystery attaches to the name "single spruce," which is applied to the balsam fir in the interior of British America. The southern Appalachian tree is called she balsam and she balsam fir. These names have no scientific basis, and they appear to have originated in a desire to distinguish this tree from the red spruce with which it is a.s.sociated. The spruce is called "he balsam."

Artificial names like these are not necessary to distinguish red spruce from Fraser fir, as very slight acquaintance should enable anybody to tell one from the other at sight, and to see clearly that they are not of the same species. Mountain balsam, a North Carolina name for this fir, is well taken, for it is distinctly a mountain species. The name healing balsam is given in acknowledgment of the supposed medicinal properties of the resin which collects in blisters or pockets under the bark of young trees and near the tops of old. In West Virginia, where this tree reaches the northern limits of its habitat, it is called blister pine, on account of the resin pockets. In the same region it is called stackpole pine, because farmers who mow mountain meadows use straight, very light poles cut from this fir round which to build haystacks.

This tree is decidedly an inhabitant of the high, exposed localities, being found entirely in the upper elevations of the southern Appalachian mountains, either forming extensive pure stands or growing in the company of red spruce (_Picea rubens_), with a scattering of various stunted hardwoods, as birch, mountain ash, cherry and usually with an undergrowth of rhododendron.

Fraser fir's range extends from the high mountains of North Carolina, where it grows 6,000 feet above sea level, northward into West Virginia, within a few miles of the Maryland line, at an alt.i.tude of 3,300 feet. The tree is not found in all regions between its northern and southern limits. Its best development is in the southern part of its range.

On the upper limits of its habitat the tree presents a decidedly picturesque appearance, being gnarled and twisted and plainly showing the results of its long struggle for life and development. It is always noticeable that on the exposed side the limbs are so short as to be almost missing and on the opposite side they grow out straight and long, appearing to fly before the wind. These limbs are sometimes of as great a girth for five or six feet of their length as any part of the main stem, and have a singular look, seeming to be all out of proportion to the rest of the tree. The older trees are vested in a smooth, yellowish-gray, mossy bark, which is quite different from that of the balsam fir. The bark is thin, about one-fourth of an inch on young trunks, and half an inch near the ground on old ones. The leaves are usually half an inch long, sometimes one inch, and their lower sides are whitish, which tint is due to abundant white stomata. In that respect they resemble leaves of balsam fir and hemlock.

The cones, like those of other species of fir, stand erect on the branches, and average about two and a half inches in length. They are smoother than the cones of most pines. They mature in September. The winged seeds average one-eighth inch in length, and are fairly abundant.

The Fraser fir grows as tall as balsam fir, from forty to sixty feet, and the trunk diameter is greater, being sometimes thirty inches, though half of that is nearer an average. When of pole size, that is, from five to eight inches in diameter, Fraser fir is often tall, straight and shapely. Its form, however, depends upon the situation in which it grows. If in the open, it develops a relatively short trunk and a broad, pyramidal crown. This fir differs from balsam fir in its choice of situation. The latter, though not exactly a swamp tree, prefers damp ground, while Fraser fir flourishes on slopes and mountain tops.

On the mountains of western North Carolina fir grows in mixture with red spruce. Sometimes the fir is fifty per cent of the stand, but usually it is less, and frequently not more than fifteen per cent. Few fir trees in that locality are two feet in diameter. They grow with fair rapidity in their early years, but decline in rate as age comes on. It may be observed in traveling through the stands of mixed spruce and fir among the high ranges of the southern Appalachian mountains that the proportion of spruce is much higher in old stands than in young. That is due to the greater age to which spruce lives. Trees of that species continue to stand after the firs have died of old age. On the other hand, fir outnumbers spruce in many young stands. That is because fir reproduces better than spruce, and grows with more vigor at first. In stands of second growth the fir often predominates. It depends to some extent upon the conditions under which the second growth has its start.

Fir does not germinate well if the ground has been bared by fire and the humus burned. Consequently, old burns do not readily grow up in fir. The best stands occur where the natural conditions have not been much disturbed further than by removing the growth. Fortunately conditions on the summit and elevated slopes of the southern Appalachians do not favor destructive forest fires. Rain is frequent and abundant, and the shade cast by evergreen trees keeps the humus too moist for fire. To this condition is due the comparative immunity from fire of the high mountain forests of fir and spruce. Sometimes, however, fires sweep through fine stands with disastrous results. The destruction is more serious because no second forest of evergreens is likely on tracts which have been severely burned.

A report by the State Geological Survey on forest conditions in western North Carolina, issued in 1911, predicted that spruce and fir forests aggregating from 100,000 to 150,000 acres among the high mountain ranges, will become barren tracts, because of the destructive effect of fires stripping the ground of humus.

The cutters of pulpwood in the southern Appalachian mountains take Fraser fir wherever they find it, mix it with spruce, and the two woods go to market as one. Statistics show the annual cut of both, but do not give them separately. The output of spruce, including fir, south of Pennsylvania, in 1910 was 115,993 cords, equivalent to about 80,000,000 feet, board measure. Most of it was red spruce, but some was fir, and in North Carolina probably twenty-five per cent was of that species. The total pulpwood cut in that state was 14,509 cords of the two woods combined, and probably 3,800 cords were Fraser fir.

The wood of Fraser fir is very light. An air dry sample from Roan mountain, N. C., weighed 22.22 pounds per cubic foot. That is lighter than balsam fir, which is cla.s.sed among the very light woods. It is stronger than balsam fir by twenty-five per cent. The wood is soft, compact and the bands of summerwood in the annual rings are rather broad and light colored and are not conspicuous. The medullary rays are thin but numerous. The color is light brown, the sapwood mostly white.

This wood is not of much commercial value except for pulp. It is not abundant, and it is not suited to many purposes. It is suitable for boxes, being light in weight and moderately strong; but other woods which grow in the same region are as good in all respects and are more abundant, and will be used in preference to fir for that purpose. The decrease in area on account of fires, and in quant.i.ty because of pulpwood operations, indicates that forest grown Fraser fir has seen its best days. On the other hand, the United States Forest Service has acquired tracts of land on the summits of the mountains where this species has its natural home, and the growth will be protected from fires and from destructive cutting, and there is no danger that the species will be exterminated.

It is an interesting tree. It contributes to the pleasure of tourists and campers among the southern mountains. The fragrance of its leaves and young branches add a zest to the summer camp. The traveler who is overtaken in the woods by the coming of night, prepares his bed of the boughs of this tree and of red spruce and sleeps soundly beneath an evergreen canopy. Pillows and cus.h.i.+ons stuffed with fir needles carry memories of the mountains to distant cities.

In one respect this tree of the high mountains is like the untamed Indians who once roamed in that region: it refuses to be civilized. The tree has been planted in parks in this country and in Europe, but it does not prosper. Its form loses something of the grace and symmetry which it exhibits in its mountain home, and its life is short. Those who wish to see Fraser fir at its best must see it where nature planted it high on the southern mountains.

ARIZONA CORK FIR (_Abies arizonica_) very closely resembles forms of the alpine fir, and may not be a separate species. Sudworth was unable to distinguish its foliage and cones from those of alpine fir, but the bark is softer. Its range is on the San Francisco mountains in Arizona. It is very scarce, and only local use of its wood is possible.

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n.o.bLE FIR

[Ill.u.s.tration: n.o.bLE FIR]

n.o.bLE FIR

(_Abies n.o.bilis_)

This tree's name is justified by its appearance when growing at its best in the forests of the northwest Pacific coast. It is tall, shapely, and imposing. It often exceeds a height of 250 feet, and a trunk diameter of six feet. It is sometimes eight feet in diameter. No tree is more shapely and symmetrical. When grown in dense stands the first limb may be 150 feet from the ground, and from that point to the base there is little taper. It over-reaches so many of its forest companions that it is sometimes designated locally as bigtree; but it is believed that lumber is never so spoken of, and that the name applies to the standing tree only. The Indians of the region where it grows call it tuck-tuck, but information as to the meaning of these words is not at hand. In northern California, and probably still farther north, this species is often called red fir, feather-cone red fir, or bracted red fir. The color of the heartwood and the appearance of the cone, doubtless are responsible for these names. There is a tendency in the fir-growing regions of the West to call all firs either white or red, depending upon the color of the heartwood. There are ten or more species of fir west of the Rocky Mountains, and to the layman they all look much alike, but to botanists they are interesting objects of study.

The range of n.o.ble fir covers parts of three states, but the whole of no one. Its northern limit is in Was.h.i.+ngton, its southern in northern California, and it follows the mountains across western Oregon. It often forms extensive forests on the Cascade mountains of Was.h.i.+ngton. It is most abundant at elevations of from 2,500 to 5,000 feet in southwestern Was.h.i.+ngton and northwestern Oregon. On the eastern and northern slopes of those mountains it is of smaller size and is less abundant. Like several other of the extraordinarily large western trees, it keeps pretty close to the warm, moist coast of the Pacific.

The s.h.i.+ning, blue-green color of the leaves is a conspicuous characteristic of n.o.ble fir as it appears in the forest. They vary in length from an inch to an inch and a half. They usually curl, twist, and turn their points upward and backward, away from the end of the branch which bears them. The cones, following the fas.h.i.+on of firs, stand upright on the twigs, and are conspicuous objects. They are four or five inches in length, which is rather large for firs, but not the largest.

The seeds are half an inch long, and are winged. They are well provided with the means of flight, but many of them never have an opportunity to test their wings, for the dextrous Douglas squirrel cuts the cones from the highest trees, and when they fall to the ground he pulls them apart with his feet and teeth, and the seeds pay him for his pains. If cones ripen on the trees and the released seeds sail away, there are birds of various feather waiting to receive them. Consequently, the n.o.ble fir plants comparatively few seeds. Their ratio of fertility is low at best, but that is partly compensated for by the large numbers produced.

Thick stands of n.o.ble fir are not common. It generally is found, a few trees here and there, mixed with other species. Sawmills find it unprofitable to keep the lumber separate from other kinds. It does not pay to do so for two reasons. Extra labor is required to handle it in that way, and there is a prejudice against fir lumber. It does not appeal to buyers. For that reason some operators have called this timber Oregon larch, and have sent it to market under that name. That is a trick of the trade which has been put into practice many times and with many woods. The purpose in the instance of n.o.ble fir was to pa.s.s it for the larch which grows in the northern Rocky Mountain region. The two woods are so different that no person acquainted with one would mistake it for the other. A recent government report of woods used for manufacturing purposes in Was.h.i.+ngton does not list a foot of n.o.ble fir.

The inference is that it must be going to factories under some other name, for it is incredible that this wood should be put to no use at all in the region of its best development.

n.o.ble fir is of slow growth, and the large trunks are very old, the oldest not less than 800 years. The summerwood forms a narrow, dark band in the annual ring. Medullary rays are numerous, but very thin and inconspicuous. The wood possesses little figure. It weighs twenty-eight pounds per cubic foot, which is four pounds less than the average Douglas fir. It is very low in fuel value, as softwoods usually are which have little resin. It is very weak, and it bends easily. It is soft, easily worked, and polishes well. This is one of its most valuable qualities. It is deficient in a number of properties which are desirable in wood, but partly makes up for them in its ability to take a smooth finish. It is pale brown, streaked with red, the sapwood darker. In that particular it is unusual, for most softwoods have sap lighter in color than the heart.

It has been already pointed out that difficulty is met when an attempt is made to list the uses of n.o.ble fir, because it loses its name before it leaves the sawmill yard and takes the name of some other wood, and those who put it to use often do so without knowing what the wood really is. It is known that some of it is manufactured into house siding. It works nicely and looks well, but since it is liable to quick decay it must be kept well painted when it is exposed to weather. It serves as interior finish, and this seems to be one of its best uses. It is so employed for steamboats and for houses, and many s.h.i.+pments of it have been made to boat builders on the Atlantic coast. It is used for s.h.i.+pping boxes, and its light color fits it for that purpose, as the wood shows painting and stenciling to good advantage.

European nurseries have propagated n.o.ble fir with success, but it does not do so well in the eastern part of the United States, though it lives through winters as far north as Ma.s.sachusetts. It is not known to have been planted for other than ornamental purposes. Unless it would grow much faster in plantations than in its wild state, it will be too long in maturing to make it attractive to the timber planter.

WHITE FIR (_Abies concolor_). The whiteness of the wood and the silver color of the young branches give this species its name, but it is not the sole possessor of that name, but shares it with three other firs. In California, Idaho, and Utah it is called balsam fir.

The branches and upper parts of the trunk where the bark is thin, are covered with blisters which contain white resin. In Utah it is known as white balsam, as silver fir in some parts of California, and as black gum in Utah. The reason for that name is not apparent, unless it refers to the black bark on old trees. It has several other names which are combinations of white and silver with some other term. Its range is mostly in the Sierras and in the Rocky Mountain ranges, extending from southern Colorado to the mountains of California, north through Oregon, and south through New Mexico and Arizona. The immense proportions are reached only in the Sierra growth, those trees in the Rockies being hardly above ordinary size.

In its free growth the tree is reputed to be the only one of its genus found in the arid regions of the Great Basin, and similar localities in Arizona and New Mexico. It is not distinguished by all botanists from the similar species, _Abies grandis_.

White fir attains a height of 250 feet and a diameter of six in some instances, but the average size of mature trees among the Sierra Nevadas is 150 feet tall and three or four in diameter. In the Rocky Mountain region the tree is smaller. It grows from 3,000 to 9,000 feet above sea level. The leaves are long for the fir genus, and vary from two to three inches. The tree's bark is black near the base of large trunks but of less somber color near the top. Near the base of large trees the bark is sometimes six inches thick. The wood of this species is light and soft. Carpenters consider it coa.r.s.e grained, by which they mean that it does not polish nicely. It is brittle and weak. The rings of annual growth are generally broad, with the bands of darker colored summerwood prominent. In lumber sawed tangentially, rings produces distinct figure, but it is not generally regarded as pleasing. The medullary rays are prominent for a softwood, but quarter-sawing does not add much to the wood's appearance. It decays quickly in alternate wet and dry situations.

Trees are apt to be affected with wind shake, and the wood's disposition to splinter in course of manufacture has prejudiced many users against it. However, it has some good qualities. The wood is free from objectionable odor, and this qualifies it as box material.

Fruit s.h.i.+ppers can use it without fear of contaminating their wares.

It is light in color, and stenciling looks well on it. Its weight is likewise in its favor.

Trees of this species seldom occur in pure stands of large extent, but are scattered among forests of other kinds. Sawmills cut the fir as they come to it, but seldom go much out of their way to get it.

The United States census for 1910 showed that 132,327,000 feet of white fir lumber were cut in the whole country, but as several species pa.s.s by that name it is not possible to determine how much belonged to the one under discussion, but probably about half, as that much was credited to California where this tree is at its best.

The fir does not suffer in comparison with trees a.s.sociated with it.

Its trunk does not average quite as large as the pines, yet larger than most of the cedars; but in height it equals the best of its a.s.sociates, and in symmetrical form, and beauty of color of foliage, it must be acknowledged superior. The dark intensity of its green crown when thrown against the blue summer skies of the Sierras forms a picture which probably no tree in the world can surpa.s.s and few can equal. Its cones suffer from the depredations of the ever-hungry Douglas squirrel which is too impatient to wait for nature's slow process to ripen and scatter the seeds; but he climbs the trunks which stand as straight as plummet lines two hundred feet or more, and clinging to the topmost swaying branches, clips the cone stems with his teeth, and the cone goes to the ground like a shot. A person who will stand still in a Sierra forest in late summer, where firs abound, will presently hear the cones thumping the ground on all sides of him. If his eyes are good, and he looks carefully, he may see the squirrels, silhouetted against the sky on far-away tree tops, seeming so small in the distance that they look the size of mice; yet the Douglas squirrel is about the size of the eastern red squirrel. He does not always let the cones fall when he cuts their stems, but sometimes carries them down the long trunk to the ground, then goes back for another. The squirrel h.o.a.rds the cones for winter, but does not neglect to fully satisfy his appet.i.te while about the work. A single h.o.a.rd--carefully covered with pine needles as a roof against winter snow--may contain five or ten bushels of cones, which are not all fir cones, but these predominate in most h.o.a.rds.

[Ill.u.s.tration]

GRAND FIR

[Ill.u.s.tration: GRAND FIR]

GRAND FIR

(_Abies Grandis_)

In California, Oregon, and Idaho this tree is called white fir, but it has several other names, silver fir and yellow fir in Montana and Idaho.

In California some know it as Oregon fir, western white fir, and great California fir. Grand fir is more a botanist's than a lumberman's name.

The range extends from British Columbia to Mendocino county, California, and to the western slopes of the continental divide in Montana. The coastal growth lies in a comparatively narrow strip. In the mountains an alt.i.tude of 7,000 feet is sometimes reached, the soil and moisture requirements, however, being the same. The largest trees are found in bottom lands near the coast where trunks 300 feet tall and six feet in diameter are found, but the average is much less. In mountain regions at considerable alt.i.tudes a height of 100 feet and a diameter of two or three is an average size. The leaves are about an inch and a half in length, occasionally two and a half. They are arranged in rows along the sides of the long, flexible branches. Cones are from two to four inches long, and bear winged seeds three-eighths of an inch long, the wings being half an inch or more in length. The bark of old trunks may be two inches thick, but generally is thinner. It is unfortunate that the wood of the large western firs lacks so many qualities which make it valuable. It is generally inferior to the woods of Douglas fir, western hemlock, Sitka spruce and the western cedars, sugar pine, and western yellow pine. The wood of grand fir is light, soft, weak, brittle, and not durable in contact with the soil. Its light color and the abundance of clear material in the giant trunks are redeeming features. These ought to open the way for much use in the future. It cannot find place in heavy construction, because it is not strong enough. That shuts it from one important place for which it is otherwise fitted. Box makers find it suitable, as all fir woods are, and large demand should come from that quarter. Trunks that will cut from 15,000 to 20,000 feet of lumber that is practically clear, and of good color, and light in weight, are bound to have value for boxes and slack cooperage. Trees grow with fair rapidity. Annual rings are usually broad, and the bands of summerwood are wide and distinct. This guarantees a certain figure in lumber sawed tangentially, but it is not a figure to compare in beauty with some of the hardwoods, or even with Douglas fir, or the southern yellow pines. It ought to be a first cla.s.s material for certain kinds of woodenware, particularly for tubs, pails, and small stave vessels, and as far as it has been used in that way it has been satisfactory.

It cannot be recommended for outside house finish, such as weather-boarding, cornice, and porch work, because of its susceptibility to decay; but it meets requirements for plain interior finish, and tests have shown it to be good material for cores or backing over which to glue veneers of hardwood.

While the eastern states have not yet wakened up to the fact that this tree is of value in ornamental planting, its decorative qualities in open stands have been recognized for some time in eastern Europe, where trees of considerable size, promising to attain almost primeval proportions, are already flouris.h.i.+ng.