The problem of managing a panic must not be thought of as mainly a 'banking' problem. It is primarily a mercantile one. All merchants are under liabilities; they have bills to meet soon, and they can only pay those bills by discounting bills on other merchants. In other words, all merchants are dependent on borrowing money, and large merchants are dependent on borrowing much money. At the slightest symptom of panic many merchants want to borrow more than usual; they think they will supply themselves with the means of meeting their bills while those means are still forthcoming. If the bankers gratify the merchants, they must lend largely just when they like it least; if they do not gratify them, there is a panic. On the surface there seems a great inconsistency in all this. First, you establish in some bank or banks a certain reserve; you make of it or them a kind of ultimate treasury, where the last shilling of the country is deposited and kept. And then you go on to say that this final treasury is also to be the last lending-house; that out of it unbounded, or at any rate immense, advances are to be made when no once else lends. This seems like saying--first, that the reserve should be kept, and then that it should not be kept. But there is no puzzle in the matter. The ultimate banking reserve of a country (by whomsoever kept) is not kept out of show, but for certain essential purposes, and one of those purposes is the meeting a demand for cash caused by an alarm within the country. It is not unreasonable that our ultimate treasure in particular cases should be lent; on the contrary, we keep that treasure for the very reason that in particular cases it should be lent. When reduced to abstract principle, the subject comes to this. An 'alarm' is an opinion that the money of certain persons will not pay their creditors when those creditors want to be paid. If possible, that alarm is best met by enabling those persons to pay their creditors to the very moment. For this purpose only a little money is wanted. If that alarm is not so met, it aggravates into a panic, which is an opinion that most people, or very many people, will not pay their creditors; and this too can only be met by enabling all those persons to pay what they owe, which takes a great deal of money. No one has enough money, or anything like enough, but the holders of the bank reserve.