SO FAR Mr. Furthmann had managed to secure many valuable clues, and we studied at once the best method of following them up. In running down the pointers, one day Mr. Furthmann sought Dr. Newman, one of the surgeons who had rendered heroic service in attending the wounded on the night after the explosion. The doctor was asked with reference to the metal and pieces of lead which he had taken from the bodies of some of the men wounded at the Haymarket. He informed Mr. Furthmann that a young man named Hahn, a shoemaker on the West Side, had come to the hospital wounded by the explosion, and that upon examination a wound had been found in the fleshy part of his thigh, from which a piece of iron had been removed. This piece was nothing less than the nut which had been used to assist in holding together the two halves of the composition bomb which had been exploded at the Haymarket. This discovery was a most important one. It proved at the trial the best piece of evidence used, by the prosecution, as it demonstrated that the bomb exploded at the Haymarket was one of the bombs manufactured by Louis Lingg, since fifty bolts and nuts of the same size and description were subsequently found in Lingg’s possession. The metal removed from the person of the wounded officers was placed in the hands of Professors Haines and Delafontaine, expert chemists, for analysis, and they found that it contained the same quantity of lead, zinc, tin and other ingredients, and the same proportion of impurities as the bombs found in Lingg’s possession. Even a trace of the copper discovered in the bomb exploded at the Haymarket was shown to have come from the candlestick used by Lingg. A small fragment was missing from the candlestick, and it was clearly shown that it had found its way into that deadly bomb.