In active times I have known one of them to operate simultaneously in the New York Stock market, in the cotton market, and in the wheat market, trading at the same time in London and Paris, “shifting his position,” or “switching” from the bull to the bear side twice in a single day, and closing all his trades at three o’clock with a total net profit of less than a thousand dollars on a turnover of 30,000 shares, to say nothing of the transactions in cotton and grain. It goes without saying that to do all these things in one day requires a curiously mercurial temperament, and calls for nerve and celerity altogether foreign to the average speculator. Such a man, moreover, contributes but little to the making of prices and values, which is the function of large markets; his chief economic usefulness lies rather in the enormous revenues he pays to the State. The man whose operations I have just described contributed in a single year $75,000 to the State Government in stock-transfer taxes. The scientific way to measure the value of speculators in wide markets is to consider the bull as one whose purchases in times of falling prices serve to minimize the decline, and the bear as one who serves a doubly useful purpose in minimizing the advance by his short sales and in checking the decline by covering those sales. All these operations serve useful economic purposes, since the more buyers and sellers there are, the greater the stability of prices and the nearer the approach of prices to values. This, as I have said, is the scientific way to look at it, and the correct way, but the popular way is something quite different. From this point of view the man who sells property he does not immediately possess is thought to be a menace, who depresses prices artificially and works a disadvantage to the investor or, in the produce markets, to the producer. Nothing could be more fallacious than this, because of the fact that just as every routine sale of actual stock requires a buyer, so every short sale by a bear requires a purchase by him of equal magnitude. And it is precisely these repurchasing or “covering” operations of the bears that do the utmost good in the way of checking declines in times of panic or distress.