Remedies and Preventives of Panic 253 the control of a block of stock that was entirely undisturbed during the decline. Had there been more such option agreements in use and fewer margin accounts I feel sure that the market would have given a much better account of itself. The Appendix presents a complete copy of this agreement, omitting only the name of the company and the specific price at which the stock changed hands. In a margin account the purchaser of the security obtains a loan against the security as collateral, this loan being subject to call at any time. Theoretically such a loan is the safest type of loan, since the lender may at any time demand repayment, and, failing to receive it, he may sell the collateral held on the market. But it was found in actual practice during the panic that it was impossible to sell in so short a space of time all the collateral that stood behind weakened loans, therefore many lenders were forced to abstain from calling their loans, if only to protect themselves from the losses that would ensue. The securities behind these loans then hung over the market to be sold as soon as prices rose sufficiently to liquidate the loans. We have seen, therefore, that while in ordinary times the collateral loan may be perfectly safe, in times of stress it is not safe. Because of the ease with which surplus funds may be put into the call loan market and withdrawn when needed, and in view of the ordinary safety of such loans, they are usually made at a very low interest rate. We have become accustomed, due to the large