. Documentary journal of Indiana 1905 . No. 11. See text. The roots of the tree gather water from the soil and force it upthrough the stems to the leaves. This water is in itself not a foodat all, for if a plant had to subsist on the matter furnished it bythe roots it would soon die. Watef is composed chemically of twoelements, hydrogen and oxj-gen, and when the water reaches theleaves it comes in contact with a third element which the leaveshave been gathering in from the air. This element is carbon, and State Board of Forestet. 57 is obtained from the air in tlie form of carbon-dioxide ffas.
. Documentary journal of Indiana 1905 . No. 11. See text. The roots of the tree gather water from the soil and force it upthrough the stems to the leaves. This water is in itself not a foodat all, for if a plant had to subsist on the matter furnished it bythe roots it would soon die. Watef is composed chemically of twoelements, hydrogen and oxj-gen, and when the water reaches theleaves it comes in contact with a third element which the leaveshave been gathering in from the air. This element is carbon, and State Board of Forestet. 57 is obtained from the air in tlie form of carbon-dioxide ffas. In thepresence of sunlight the leaf has the power to combine these threeelements, and the result of the combination is some form of starchor sugar, and it is on this starch or sugar tliat the plant lives. Thisprocess of food making is carried on in the leaf only, but thefinished food is transported tlirough the various plant parts fornourishment or storage as may be needed.*. No. 12. Tlietie trees died during the past summer and were recently cut dowu. ISTow to get back to our tree trimming, it is easy to see the follyof cutting off live branches in order to throw more nourishmentto the remaining limbs. When you destroy a healthy leaf youlessen the plants power to care for itself just that much. Every ••For the beneatothn critical reader, I will say that the roots also take up from thesoil a certain amount of mineral salts in solution. These salts are indirectly necessary, astheir presence gives oliloropbyll (the green coloring matter in plants) the power to makefiod. They are not, however, p^c/jii/ooc/s any more than pepsin and hydrochloric acid arehuman foods. A starving man would not relish a meal of gastric juice, no matter howvaluable that substance might be in the function of nutriiion. 58 Fifth AmsrcAL Repoet farmer knows tliat if the bugs destroy the leaves of his potatovines, he will have no potatoes; or if the hail strips the blades fromhis c
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