The evidence from the Chicago Board of Trade, with reference to the extent of clearings within the exchange there, comes in a letter from the Secretary of the Board of Trade to Professor Taussig. The only clearing house transactions are in connection with "futures." All "spot" transactions are paid in full by check. All futures other than those offset by clearing are paid in full by check. The total amount put through the Clearing House in 1915 was 118 millions, of which the balances paid were 41 millions (saving checks to the extent of 77 millions). This 77 millions is a trifle indeed as compared with the gap of 245 billions we are trying to fill! It is a trifle also as compared with the business done on the Board of Trade. The Secretary estimates that commodities to the value of $375,000,000 actually arrived on the exchange in 1915. On the average, the figure would be $350,000,000. For the Stock Yards "it is approximately the same--last year was $375,000,000. Of fruits, vegetables, poultry, butter, eggs, etc., sold in South Water Street, it is claimed by their statisticians, the value is $350,000,000, or a total of about eleven hundred millions _arriving_ [Italics mine] yearly at this great market place, all of which is paid for by checks, and when the ownership changes, the change of ownership is always paid by check." How many times the goods change hands, cannot be stated on the basis of records of the Board of Trade. The Secretary contents himself with saying that they are "sold and resold many times." We have discussed this, on the basis of reputed figures of the Federal tax on grain futures in 1915, in our chapter on "Volume of Money and Volume of Trade." In any case, it is clear that the 77 millions of checks economized, though absolutely great, is relatively a bagatelle. It is, moreover, more than compensated for by loan transactions. The Secretary estimates that for a sixty-day period, when grain is coming in, from two to four millions will be lent by the banks daily on _arriving_ grain. How great the loan transactions on subsequent sales will be we can only conjecture. While able to find, then, important cases of trade and speculation which dispense with the use of checks, I cannot find anything of magnitude sufficient to aid Professor Fisher's case, and I find, on the other hand, enormous overcounting in every field where business and banks meet, as well as in the relations of banks to non-commercial depositors. I conclude, therefore, with reference to the figures of Fisher and Kemmerer[448] for volume of trade, that they are much exaggerated for the base year, and that for every other year they are wholly wrong, both because of their excessive magnitude, and because the index of variation has been wrongly chosen.