. The chemistry of plant and animal life. Agricultural chemistry. ORGANIC COMPOUNDS OF PLANTS 177 it is small, usually less than 2 per cent. The amount of pure starch in some of the cereals and farm crops is approx- imately as follows: Pure starch. Per cent. Wheat 68 Wheat flour 72 Oats 55 Corn 75 Rice 78 Potatoes 80 Wheat bran 8 Straw less than 1 Hay 1 to 3 Experiment 46. — Preparation of potato starch. Reduce one or two clean potatoes to pulp on the grater. Tie the pulp in a clean cloth and squeeze into a large cylinder filled with water, occasion- ally dipping the bag into the water. Allow
. The chemistry of plant and animal life. Agricultural chemistry. ORGANIC COMPOUNDS OF PLANTS 177 it is small, usually less than 2 per cent. The amount of pure starch in some of the cereals and farm crops is approx- imately as follows: Pure starch. Per cent. Wheat 68 Wheat flour 72 Oats 55 Corn 75 Rice 78 Potatoes 80 Wheat bran 8 Straw less than 1 Hay 1 to 3 Experiment 46. — Preparation of potato starch. Reduce one or two clean potatoes to pulp on the grater. Tie the pulp in a clean cloth and squeeze into a large cylinder filled with water, occasion- ally dipping the bag into the water. Allow the cylinder to stand. Fig. 76. — Obtaining starch from potato. for twenty minutes, or until the starch has all settled; pour off the water. If the starch is not clean, wash by adding more water, and allow it to settle again ; then pour off the water. Leave the cylin- der in the desk until the starch is dry. Save this starch for the following tests: Tests for starch. Place gram of starch in a N. 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 Snyder, Harry, 1867-1927. New York, The Macmillan company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagricul, bookyear1913
