Introduction. This chapter gives the data collected at the farm census of 1920 for three groups of products which, while they are produced to a considerable extent on farms and have many of the characteristics of crops, have not been classified with farm crops at the present census. These are (1) forest products of farms, (2) nursery products, and (3) greenhouse products. In addition to the data relating directly to these products, information is given with regard to the area of woodland and of timberland in farms, the acreage used for growing nursery stock, and the number of square feet under glass. Comparative figures from the census of 1910 are given for all items except woodland and timberland; and comparative figures from the census of 1900 also are given for forest products and nurseries.

FOREST PRODUCTS AND TIMBERLAND.

The data presented in this report cover only that part of the woodland and timberland included in the farm area and the forest products obtained therefrom, and do not represent the total acreage of all woodland or timberland in the United States nor the value of all forest products produced during the years covered by the different censuses.

Explanation of terms.-As the terms were defined for use in the different farm censuses, forest products include firewood, fence posts, crossties, pulp wood, saw logs, poles, bark, small quantities of turpentine and rosin, etc.; woodland includes all land covered with natural or planted forest trees which produce, or later may produce, firewood or other forest products; and timberland, or the area in merchantable timber, includes that part of the woodland covered by trees mostly of saw-log size.

Forest products of farms: 1899 to 1919.-At the different censuses the inquiries on the farm schedule have related to the value of all forest products cut on farms in the calendar year preceding the census date, regardless of whether the products were sold from or used on the farms in that year or were being held for sale or for use later.

The number of farms reporting forest products cut in 1919 was 1,819,685, or 28.2 per cent of all farms in the United States on January 1, 1920. The value of all forest products of farms in 1919 was $394,321,828; of this amount, $217,716,046, or 55.2 per cent, represented the value of products sold (or cut and held for sale), and $176,605,782, or 44.8 per cent, represented the value of products used on the farm (or cut and held for use later). The average value of forest

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products per farm reporting was $217. A part of the forest products derived from the farm woodland and intended for use on the farm represents lumber for new buildings, repairs, or other improvements on the farm property, while a much larger part doubtless consists of firewood-the latter coming especially from low-quality wood not suitable for lumber.

The proportion of all farms reporting forest products in 1919 (28.2 per cent) was considerably less than in 1909 (37.9 per cent), the decreased proportion being general throughout the divisions and states. The 101.9 per cent increase in the value of all forest products for 1919 as compared with 1909 was due largely to the high prices prevailing for forest products in 1919, the increase being much larger for the products sold from farms than for the products used on farms.

TABLE 1.-FOREST PRODUCTS OF FARMS IN THE UNITED STATES: 1919 AND 1909.

[Figures for divisions and states in Tables 2 and 3.]

1 The value of forest products of farms in 1899 was $109,864,774. Woodland and timberland in farms: 1920.-The area of woodland included in farms in 1920 was 167,730,794 acres, of which 35,270,527 acres, or practically onefifth (21 per cent), was classed as timberland—that is, woodland with trees mostly of saw-log size. Much of the difference between the total acreage of woodland and the acreage of timberland is represented by farm wood lots, partially cut-over land, and land covered with young growth but containing few, if any, trees of saw-log size suitable for lumber.

Tables for divisions and states.-The value of forest products of farms and the acreage of woodland and timberland in farms are presented, by divisions and states, in Tables 2, 3, and 4.

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