_Sources of information._--The object of this chart, taken altogether, is to show the general law of market prices as governed by supply and demand from the actual facts in the market for wheat. The facts are taken from the best records available. The prices are from the daily record of the Produce Exchange of New York. The average price for the year and the fluctuations within the year are given for the period from September 1, when the new crop appears, to the August following, this being the period actually corresponding in market with a year represented by the crop figures. The estimate of the world's crop since 1885 is taken from carefully prepared statistics in the United States Department of Agriculture. The estimates prior to that date do not include the entire world, because no statistics can be reached, but they do include the most careful estimates of all countries whose product entered into the world's market. No effort has been made, for fear of complicating the chart, to show a similar correspondence between supply and price in reference to corn and oats. The tables following, however, give data for such comparison with reference to this country alone. The export of corn and oats has been too limited to play any great part in modifying prices.
Table of production--wheat, corn, oats, 1878 to 1897. (Figures give millions of bushels)
Chart VII. Annual fluctuations in the price of wheat in New York, 1878-1897. Page 91.
_Annual fluctuations in the price of wheat. Highest year, lowest year, and average of twenty years in New York, 1878 to 1897_
_Explanation._--This chart is intended to show the tendencies of the market for wheat from month to month throughout the market year. In the center is given the averages of highest prices and of lowest prices for each month in the New York Produce Exchange during the period from September, 1878, to August, 1897, inclusive. The horizontal lines between the averages of extremes give the average price for the twenty years in the several months. The diagonal lines give for each month the extreme fluctuation during the twenty years. Above the lines of averages are given the fluctuations by months in the year 1881-2, the year of highest prices. The upper of the two continuous lines gives the top prices of the month and the lower the bottom prices. The short horizontal lines give the average price for each month; and the double horizontal line across the chart represents the average price for the year. Below, the fluctuations in wheat prices for 1894-5, the year of lowest prices, are shown in the same way. At the top of the chart are given, in millions of bushels, the receipts of wheat in New York. The shaded double column in the center under each month gives the average receipts for twenty years. To the left, a single column shows the receipts for 1894-5. To the right, a single column gives the receipts for 1881-2. Since the receipts at New York are chiefly for export, the general correspondence between receipts and prices is rather a result of a larger application of supply and demand than an exposition of it. The chief use of the chart is to show the fluctuation of prices under varying local conditions. The figures on the left give the price per bushel, and the figures on both left and right at the top indicate millions of bushels.