The supply of southern white cedar is not large, and it is being cut faster than it is growing. The deep swamps where it grows protect white cedar forests from fire, and for that reason it is more fortunate than many other species. Not even cypress can successfully compete with it for possession of water soaked morasses. It does not promise great things for the future, for it will never be extensively planted. Its range has been pretty definitely fixed by nature to deep swamps near the Atlantic coast. Within those limits it will be of some importance for a long time. Where it finds its most congenial surroundings, little else that is profitable to man will grow. This will save it from utter extermination, because much of the land which it occupies will never be wanted for anything else. [Illustration] INCENSE CEDAR [Illustration: INCENSE CEDAR] INCENSE CEDAR (_Libocedrus Decurrens_) In California and Oregon this tree is known as white cedar, cedar, and incense cedar; in Nevada and California it is called post cedar and juniper, and in other localities it is red cedar and California post cedar. It is a species of such strong characteristics that it is not likely to be confused with any other. Though different names may be applied to it, the identity of the tree is always clear. Its range extends north and south nearly 1,000 miles, from Oregon to Lower California. It is a mountain species, and it faces the Pacific ocean in most of its range. In the North it occupies the western slope of the Cascade mountains in southern Oregon and northern California; and it grows on the western slope of the Sierras for five hundred miles, at altitudes of from 4,000 to 8,000 feet, where it is mixed with sugar pine, western yellow pine, white fir, and sequoias. It is a fine, shapely tree, except that the butt is much enlarged. It has the characteristic form of a deep swamp tree, but it has nothing to do with swamps. Its best development is on the Sierra Nevada mountains, where swamps are few, and the incense cedar avoids them. It occupies dry ridges and slopes, but not sterile ones. It must have as good soil as the sugar pine demands. Its height when mature ranges from seventy-five to 125 feet, diameter four feet from the ground, from three to six feet, but some trees are larger. It is not a rapid grower, but it maintains its vigor a long time. As an average, it increases its diameter an inch in from seven to ten years. The wood is dense. It contains no pores large enough to be seen with an ordinary reading glass. The medullary rays are so small as to be generally invisible to the naked eye, but when magnified they are shown to be thin and numerous. The summerwood forms about one-fourth of the annual ring. The wood is nearly as light as white pine, is moderately strong, is brittle, straight grained, the heartwood is reddish, the thick sapwood nearly white. It is an easy wood to work, and in contact with the soil it is very durable.