SECTION I. (continued 8)

My own observations, twelve years ago, acquainted me with the fact, that when the grain in the ear has acquired one half of the full size, the quantity of sugar in the sap has passed its maximum, or begun to decrease, and continues to do so until it disappears entirely. Lopping off the young ears makes shorter work of it. It is like taking the young from an animal giving suck, in which case the milk soon ceases to flow into the breast, and that which produced it is elaborated into other fluids necessary to the nourishment of the different parts of the body of the parent. In the corn-stalk, when deprived of its ears, the elements of sugar are dissipated by increasing the size of the plant.

Sugar may also be obtained from the carrot and the parsnip, as well as from all sweet fruits. It is abundant throughout the vegetable kingdom; it forms the first food of plants when they germinate in the seed; when the first little sprout is projected from a grain of corn, a portion of the farina, or starch, is changed into sugar, which may be called the blood of the plant, and from it is drawn the nourishment necessary to its expansion and appearance above the surface of the earth. In the latter growth of many plants an inverse process is carried on, as in the Indian corn, which I have just spoken of. In this instance, as also numberless others, sugar is formed in large quantities in the body of the plant, and elaborated into farina, or starch, in the ear. The elements of which sugar and starch are composed are the same; the only difference is in their proportions. Chemists, being aware of this, have converted starch into sugar; and could do it with certainty to any extent, were any advantage to be gained by it; but hitherto starch has been higher in price than sugar.