Productive farming . n or other plant is a fewinches high, start the experiment. Have the water linemarked on the lard pails one inch above the bottom of thepots. Each day fill the water up to the mark, and recordthe amount required for each pail in two weeks. If the onewith the growing plant requires the most, where has theextra water gone to ? ^Moisture from Leaves.—^Arrange an exper-iment as shown in Fig. 36. The moisture which escapesfrom the leaves will partly be condensed on the inside of theinverted glass, and may be seen in fine mist or drops. Leaf Structure.—Fig. 4 shows the
Productive farming . n or other plant is a fewinches high, start the experiment. Have the water linemarked on the lard pails one inch above the bottom of thepots. Each day fill the water up to the mark, and recordthe amount required for each pail in two weeks. If the onewith the growing plant requires the most, where has theextra water gone to ? ^Moisture from Leaves.—^Arrange an exper-iment as shown in Fig. 36. The moisture which escapesfrom the leaves will partly be condensed on the inside of theinverted glass, and may be seen in fine mist or drops. Leaf Structure.—Fig. 4 shows the cut edge of a the upper and lower surfaces of the leaf there are STRUCTURE AND PHYSIOLOGY OF PLANTS H many soft plant cells. These cells have very thin wallsand are bathed by air. The air cavities are shown at A inthe figure. All the cells shown with dark grains in the figurecontain the green coloring matter of the leaf. This is calledchlorophyl (klo-ro-fil). The use of this will be spoken of
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Keywords: ., bookcentury1900, bookdecade1910, bookidcu, booksubjectagriculture
