. Agriculture for southern schools. of leguminous plants are worth moreto mankind than all the gold in the whole world. Nearlyevery farm that to-day is too poor to keep the farmersfamily in comfort can be made fertile by the wise use ofcowpeas, crimson clover, and related legumes. Exercise. — Make a mud ball of stiff, poor clay and put it awa) todry. Make another of half clay and half dark, fine woods earth. Letit dry. Try to make a firm mud ball of dark woods earth drying, which of the first two crumbles most easily ? Why ?Find all the plants that you think may be legumes. Learn a
. Agriculture for southern schools. of leguminous plants are worth moreto mankind than all the gold in the whole world. Nearlyevery farm that to-day is too poor to keep the farmersfamily in comfort can be made fertile by the wise use ofcowpeas, crimson clover, and related legumes. Exercise. — Make a mud ball of stiff, poor clay and put it awa) todry. Make another of half clay and half dark, fine woods earth. Letit dry. Try to make a firm mud ball of dark woods earth drying, which of the first two crumbles most easily ? Why ?Find all the plants that you think may be legumes. Learn all you canabout the leaves, fiowers, pods, and about the size and shape of thefertilizer factories on their roots. How many stamens in a pea orcowpea bloom? Are all of tliem partly grown together? Note to the Teacher. — Oljjects needed: (i) soils of differentcolors, due to different amounts of vegetable matter ; (2) seed, flowers,plants, or roots of any legume, as garden pea, cowpea (Southern fieldpea), sweet-pea, clover, Fig. 59. — Pods of a Leguminous Plant SECTION XVI. BARNYARD MANURE A FARM with many animals is generally rich and produc-tive because of the supply of manure. Experience in allcountries shows that this material is an excellent meansfor enriching all kinds of soil. Some chemical fertilizers,however, are beneficial only on certain soils. Manure has these good effects : (i) It makes the earthloose and mellow, allowing the roots and air to come intocontact with all parts of the soil. (2) After it has rotted,it enables the soil to hold moisture in dry weather. (3) Itfurnishes plant-food to the roots of growing crops. (4) Itadds needed germs and causes the beneficial ones alreadyin the soil to thrive and multiply, thus helping the crop. Richest manure from richest food. — Barnyard manureis composed largely of ground-up parts of plants, and con-tains very nearly what the plants contained. The richestis made by feeding cotton-seed meal and other foods ri
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