By this method, the positions of the dots on the chart show whether there is any close relation between supply and

price. The dots fall in fairly regular order, proving better information f Or the Studcut

than Fig. 118 that the price does largely depend upon the o i • . -ittt i

supply. A smooth curve has been drawn to represent Ot hlStory. We are here lU-

approximately the general relation between supply and 4-„„„„4.pJ -nartinnlnrlv I'n thp.

price which the dots might seem to indicate. Note that tereSLCU pdrtlCUldny in tne

the year is stated for each dot shown rCCOrd of the United StatCS.

That curve line has accordingly been made much heavier than any of the others, so that it may be brought prominently to the eye of the reader. By visually projecting the curves for Russia and the United States beyond the limits of the chart, it appears that we should equal Russia's population within the next few decades. It must be remembered in viewing this chart that the populations of the Asiatic countries (especially the populations of China and India) are not shown here. If all the countries of the world were considered, it would be seen at once that for many years to come there is no likelihood of the United States having the greatest population in the world. It is only because Asiatic countries have been omitted that we seem to be so nearly the head of the list.

1800 1810

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