New school history of the United States . an corn in 1880approached two thou-sand millionsof bush-els, while that ofwheat was nearly fivehundred millions ofbushels.* In 1789the imports were valued at ^23,000,000, and the exports ofdomestic products at nearly ^20,000,000. In 1881 the im-ports were almost ^730,000,000, and the domestic exportsnot far from $850,000,000. STEAM AND ELECTRICITV. 158. All transactions have been quickened by the net-workof telegraphic lines and of railroads, linking together the re-motest parts of the country, f The manifold applications of * Among the modern applianc
New school history of the United States . an corn in 1880approached two thou-sand millionsof bush-els, while that ofwheat was nearly fivehundred millions ofbushels.* In 1789the imports were valued at ^23,000,000, and the exports ofdomestic products at nearly ^20,000,000. In 1881 the im-ports were almost ^730,000,000, and the domestic exportsnot far from $850,000,000. STEAM AND ELECTRICITV. 158. All transactions have been quickened by the net-workof telegraphic lines and of railroads, linking together the re-motest parts of the country, f The manifold applications of * Among the modern appliances for handling such immense quantities of grain,are the Elevators, which are huge buildings containing facilities for storage and forthe transferring of the grain to or from boats or cars. t In 1881 the telegraph lines of the United States attained the length of one hun-dred and twenty thousand miles, in addition to railway, government, and private lines. The lines of railroad amounted to ninety-three thousand six hundred and sixty-nine. GRAIN ELEVATORS. STEAM AND ELECTRICITY. 293 steam and electricity to the service of daily life have all beensubsequent to the Treaty of Paris. Now fields are ploughedand harvests are threshed by steam, and every industrial pro-cess avails itself, directly or indirectly, of its gigantic land and the water, continents, oceans, lakes, and riversare traversed by its agency, and it is employed as the motivepower of complex machinery in crushing rocks and in sawingfire-wood. The almost instantaneous conveyance of intelligence by theelectric telegraph—in a large measure an American invention—is not older than the living generation. Still more recently,electricity has given us the telephone, and that most marvel-lous of instruments, the phonograph,* both of them fruits ofAmerican ingenuity. INVENTIONS. 159. The progress and the welfare of the people have been greatly promoted by the genius displayed in adapt-ing scientific discoveries t
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