. A civic biology : presented in problems. Biology; Sanitation. 118 ECONOMIC IMPORTANCE OF GREEN PLANTS man. An onion is a compact budlike mass of thickened leaves which contain stored Cabbage Onions Leaves used as food. Lettuce Stems as Food. - - A city child would, if asked to name some stem used as food, probably mention asparagus. We sometimes forget that one of our greatest necessities, cane sugar, comes from the stem of sugar cane. Over seventy pounds of sugar is used each year by every person in the United States. To supply the growing demand beets are now being raised for their
. A civic biology : presented in problems. Biology; Sanitation. 118 ECONOMIC IMPORTANCE OF GREEN PLANTS man. An onion is a compact budlike mass of thickened leaves which contain stored Cabbage Onions Leaves used as food. Lettuce Stems as Food. - - A city child would, if asked to name some stem used as food, probably mention asparagus. We sometimes forget that one of our greatest necessities, cane sugar, comes from the stem of sugar cane. Over seventy pounds of sugar is used each year by every person in the United States. To supply the growing demand beets are now being raised for their sugar in many parts of the world, so that nearly half the total supply of sugar comes from this source. Maple sugar is a well-known commodity which is obtained by boil- ing the sap of sugar maple until it crystallizes. Over 16,000 tons of maple sugar is obtained every spring, Vermont producing about 40 per cent of the total output. The sago palm is another stem. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hunter, George W. (George William), 1873-1948. New York : American Book Company
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