By a comparison of the average yields per acre of the leading tropic imports with the amounts of those imports, we shall find the area of the territories that are in cultivation to meet our present needs.[N] In 1897 we imported into this country from all sources the crops that would be yielded by 1,400 square miles of coffee, 30 of bananas, 40 of cocoa beans, 60 of India rubber, 10 of oranges; a total of 1,540 square miles. Add to that the area that will be needed for our sugar, and the result does not equal the whole of Porto Rico. The area of Porto Rico is less than 4,000 square miles. Multiply these crop areas by ten, to make allowance for crop rotation and for the time taken for new plantations to come into bearing. The result will be less than 40,000 square miles, a territory not half as great as the area of the West India islands. They in their turn do not comprise the fiftieth part of the area of tropic America. [Footnote N: The average yields of tropic produce were made out with the assistance of the Cyclopædia Britannica, Coffee and India-Rubber Culture in Mexico (Romero), and statistics obtained at the Philadelphia Commercial Museums. The amounts of the imports were taken from the United States Report on Commerce and Navigation for 1897.] When the time comes that American industry needs to develop more lands, there they lie. They are our opportunity. They have an almost virgin soil, because we have been too busy with our own internal development to give them needed attention. They need capital, and we have been borrowing money abroad to meet our needs at home. Their inhabitants are idle for lack of employment; they will respond to our capital. The United States is the natural market for the West Indies; they lie close to our shores, and when the Nicaragua Canal comes they will be but islands in an American lake--parts of the industrial unit of Greater America. They can give us the things that are needed to round out our consumption, and we can do the same for them. It is illogical and unlike American shrewdness to go seven thousand miles for tropic lands when an equally valuable, a more valuable, area is within seven hundred miles of us. The comparison becomes even more striking when it is remembered that the control of the Philippines brings to us a burden of problems from which industrial development in this country is free.