. Agriculture; a text for the school and the farm . stration may be suggested by members ofthe class and by the teachers. Invite the county agent from the County Farm Bureau,county club agent, or some soil expert, to give an addressor a demonstration on Soils and Their Management be-fore the class, and if agreeable to the school management,let this be done before the entire school. All need a greaterknowledge of soil as the source of all that we eat, drinkand wear. It might be well here to go into some of the more ele-mental things in regard to the chemistry of soils. Everystudent should bring
. Agriculture; a text for the school and the farm . stration may be suggested by members ofthe class and by the teachers. Invite the county agent from the County Farm Bureau,county club agent, or some soil expert, to give an addressor a demonstration on Soils and Their Management be-fore the class, and if agreeable to the school management,let this be done before the entire school. All need a greaterknowledge of soil as the source of all that we eat, drinkand wear. It might be well here to go into some of the more ele-mental things in regard to the chemistry of soils. Everystudent should bring samples of soil, know different typesand their relation to crop production and their ability todrain well, hold fertility and moisture as well as the causesfor washing, erosion/ blozving, and ninning out. Students may well take field trips to study types of lowor high priced land in the neighborhood. To be a goodjudge of land or soil will prove a great asset for the studentthrough life regardless of vocation or the profession heintends to Parlin (N. J.) team demon-stratins before an inter-statefair audience. PART IV. FARM ANIMALS CHAPTER XVIIIFARM ANIMALS AND AGRICULTURE FARM animals form one of the most important sources ofwealth in the nation. The five most important groupsof animals, ranked according to their market value, arehorses, cattle, hogs, mules and sheep. If these animalsshould all be sold, they would bring the enormous sum ofnearly six billion dollars, or sixty dollars for every man,woman and child in the United States. 1. Work Animals Farm animals serve several important uses: (1) theyprovide food for man, (2) they work for him, and (3) theysupply various useful products. The total market value ofthe working animals, horses and mules, is slightly greaterthan that of the food producing group, cattle, sheep andhogs. Using animals for work.—Centuries ago man had notyet domesticated the animals and trained them to work forhim. Since the uses of steam and e
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