By this time Edison was extremely hungry, and he gave most serious consideration as to what he should buy in the way of food that would be most satisfying. He finally decided upon apple dumplings and coffee, which he obtained at Smith & McNeil's restaurant. He says he never ate anything more appetizing.

He applied to the Western Union Company for a position as operator, but as there was no immediate vacancy he was obliged to wait for an opening. Having only the remainder of the borrowed dollar, he did not want to spend it for lodging, so he got permission to stay overnight in the battery-room of the Gold Indicator Company. Thus he kept what little change he had to buy food.

This was four years after the Civil War, but its effects were felt everywhere, and notably in the depreciation of government securities and our paper money. Gold, being the standard, was regarded as much more valuable than a paper promise to pay issued by a government heavily in debt. A gold dollar, therefore, would buy much more than a paper dollar, at times a dollar and a quarter, or a dollar and a half in value. In a word, gold commanded a high premium. For several years afterward there was a great deal of speculation in the precious metal, and a "Gold Room" had been established in Wall Street, where the transactions took place. At first the prices were exhibited on a blackboard there, but before long this plan was found to be too slow for the brokers. Then Dr. S. S. Laws, vice president and presiding officer of the Gold Exchange, invented a system of indicators to be placed in the offices of brokers. These indicators were operated from a complicated transmitting instrument at the Exchange, and each one showed the fluctuations of price as transactions took place. Dr. Laws resigned from the Exchange and organized the Gold Indicator Company, which put the system into operation.

At the time when Edison took shelter at night in the battery-room of the company there were about three hundred instruments in the offices of subscribers. While waiting to hear from the Western Union, Edison spent his days studying the indicators and the complicated transmitting instrument in the office, controlled from the keyboard of the operator on the floor of the Gold Exchange.

What happened next has been the basis of many inaccurate stories, but the following is Mr. Edison's own version: "On the third day of my arrival, and while sitting in the office, the complicated general instrument for sending on all the lines, and which made a very great noise, suddenly came to a stop with a crash. Within two minutes over three hundred boys—a boy from every broker in the street—rushed up-stairs and crowded the long aisle and office, that hardly had room for one hundred, all yelling that such and such a broker's wire was out of order and to fix it at once. It was pandemonium, and the man in charge became so excited that he lost control of all the knowledge he ever had. I went to the indicator, and, having studied it thoroughly, knew where the trouble ought to be, and found it. One of the innumerable contact springs had broken off and had fallen down between the two gearwheels and stopped the instrument; but it was not very noticeable. As I went out to tell the man in charge what the matter was Dr. Laws appeared on the scene, the most excited person I had seen. He demanded of the man the cause of the trouble, but the man was speechless. I ventured to say that I knew what the trouble was, and he said, 'Fix it! Fix it! Be quick!' I removed the spring and set the contact wheels at zero; and the line, battery, and inspecting men all scattered through the financial district to set the instruments. In about two hours things were working again. Dr. Laws came in to ask my name and what I was doing. I told him, and he asked me to come to his private office the following day. His office was filled with stacks of books all relating to metaphysics and kindred matters. He asked me a great many questions about the instruments and his system, and I showed him how he could simplify things generally. He then requested that I should call next day. On arrival, he stated at once that he had decided to put me in charge of the whole plant, and that my salary would be three hundred dollars a month! This was such a violent jump from anything I had ever had before that it rather paralyzed me for a while. I thought it was too much to be lasting; but I determined to try and live up to that salary if twenty hours a day of hard work would do it. I kept this position, made many improvements, devised several stock tickers, until the Gold and Stock Telegraph Company consolidated with the Gold Indicator Company."

Certainly few changes in fortune have been more sudden and dramatic in any notable career than this which thus placed an ill-clad, unkempt, half-starved, eager lad in a position of such responsibility in days when the fluctuations in the price of gold at every instant meant fortune or ruin to thousands.

There was at this time a very active period of speculation, and not a great while afterward came the attempt of Jay Gould and his associates to corner the gold market by buying all the available supply. This brought about the panic of Black Friday, September 24, 1869.

Edison, then but twenty-two years old, was a keen observer, and his recollection of this episode is interesting. "On Black Friday," he says, "we had a very exciting time with the indicators. The Gould and Fisk crowd had cornered gold, and had run the quotations up faster than the indicator could follow. The indicator was composed of several wheels; on the circumference of each wheel were the numerals; and one wheel had fractions. It worked in the same way as an ordinary counter; one wheel made ten revolutions, and at the tenth it advanced the adjacent wheel; and this, in its turn having gone ten revolutions, advanced the next wheel, and so on. On the morning of Black Friday the indicator was quoting one hundred and fifty premium, whereas the bids by Gould's agents in the Gold Room were one hundred and sixty-five for five millions or any part. We had a paper-weight at the transmitter (to speed it up), and by one o'clock reached the right quotation. The excitement was prodigious. New Street, as well as Broad Street, was jammed with excited people. I sat on the top of the Western Union telegraph booth to watch the surging, crazy crowd. One man came to the booth, grabbed a pencil, and attempted to write a message to Boston. The first stroke went clear off the blank; he was so excited that he had the operator write the message for him. Amid great excitement Speyer, the banker, went crazy, and it took five men to hold him; and everybody lost their heads. The Western Union operator came to me and said: 'Shake, Edison, we are O. K. We haven't got a cent.' I felt very happy because we were poor. These occasions are very enjoyable to a poor man; but they occur rarely."

Edison in those days rather liked the modest coffee-shops and mentions visiting one. "When on the New York No. 1 wire that I worked in Boston there was an operator named Jerry Borst at the other end. He was a first-class receiver and rapid sender. We made up a scheme to hold this wire, so he changed one letter of the alphabet and I soon got used to it; and finally we changed three letters. If any operator tried to receive from Borst he couldn't do it, so Borst and I always worked together. Borst did less talking than any operator I ever knew. Never having seen him, I went, while in New York, to call upon him. I did all the talking. He would listen, stroke his beard, and say nothing. In the evening I went over to an all-night lunch-house in Printing House Square, in a basement—Oliver's. Night editors, including Horace Greeley, and Henry Raymond, of the New York Times, took their midnight lunch there. When I went with Borst and another operator they pointed out two or three men who were then celebrated in the newspaper world. The night was intensely hot and close. After getting our lunch and upon reaching the sidewalk, Borst opened his mouth, and said: 'That's a great place; a plate of cakes, a cup of coffee, and a Russian bath for ten cents.' This was about fifty per cent, of his conversation for two days."

The work of Edison on the gold indicator had thrown him into close relationship with Mr. Franklin L. Pope, a young telegraph engineer, and afterward a distinguished expert and technical writer. Each recognized the special ability of the other, and barely a week after Black Friday the announcement of their partnership appeared in the Telegrapher of October 1, 1869.