A couple of steps and the captains were in the parlor, and then for the first time they realized the full and terrible import of their discovery. There were abundant evidences that a frightful struggle for life had taken place within the four walls, and that it was here that the unfortunate physician had met his doom. It was a small room, only 16 by 20 feet, with three windows, two facing west on Ashland Avenue and a third looking out south on a vacant lot. Near the southwest corner was a bloody stain nearly a foot in diameter and about four feet away from the wall. Almost in the center of the room was another blood-stain almost as large. It looked as though a body had been rolled from one place to the other, the changes of position leaving a small pool wherever the head had rested. Over these stains the same reddish brown paint that appeared in the hallway had been applied, but in such a bungling way as to leave no doubt that it had been done with great haste. The stains of blood were not heavy, and it was apparent that the life-fluid had soaked through a carpet before reaching the wood. In the northeast corner was a bedstead, in the northwest a dressing-case, in the southeast a wash-stand with a pitcher and bowl. In the center of the room was a rocking-chair. The right arm was broken off and lay on the floor, and the officials came quickly to the conclusion that the physician was sitting in this chair when he was first attacked.
On the floor in other parts of the room were a lamp and the oil can from which it had been filled. But these articles attracted little attention for the moment. The attention of the officials was riveted on the blood stains that met their eyes in whatever direction they looked. As Captain Wing remarked later in the day, it was "blood, blood, everywhere." The center of the floor was dotted with drops about the size of a pea. There were half a dozen stains on the front of the dressing case, and some of it had congealed thickly on the brass facing of the lock. This Captain Wing plied off, in order that an analysis might be made. There were more spots on the key plate of the washstand, and this also was forced off. On the south wall was a score or more of stains, large and small, to several of which long black hairs were adhering, just as if the blood that spurted out when the head was struck with some blunt instrument had carried the hair with it. The wall was white, and the mute evidences of the awful crime stood out with terrible distinctness. On the bedstead was a mattress and a pair of uncovered pillows, but this part of the room had escaped the struggles of the victim to save his life. The painter had left his mark on the inside blind or shutter of the window looking out on the vacant lot, for eleven finger prints were plainly visible. Apparently the blind had been closed in a hurry while the paint was still wet.
Passing through the communicating door into the dining-room, another spot of blood appeared in the middle of the floor. Strange to say, no effort had been made to cover this over. There was nothing else about the room to attract attention. The basement was next visited. Here the pot of red paint and the paint brush had been thrown down under the stairs. A broom with a broken handle stood against the wall, and a hurried inspection showed that it also was stained with blood and particles of wool. This had evidently been used to sweep the carpets while yet wet with gore. The paint pot bore the name of a well-known Chicago firm. Returning up stairs, the officials commenced a more minute inspection. On the floor beside the bed they found a key, which was subsequently tried in the lock of the bloody trunk found on the previous day, and proved to be the one wanted. A bill for curtains was also brought to light. The dressing case and wash stand were turned around, and the officials were considerably elated at finding them branded with the letters "A. H. R. & Co.," the trade mark of Alexander H. Revell & Co., an extensive local furniture house of national reputation. This of itself was a valuable—and as it subsequently turned out—a vital clue. The kerosene lamp was found to be almost full. If it was filled the night of the murder, it did not burn more than an hour. There were, however, no signs of a single article of the murdered man's clothing, of the implements in the surgeon's case that he had taken with him, or of the cotton batting. It was surmised that the murderers might have buried their tell-tale evidences of their bloody work in the cellar, and later in the day a half-dozen detectives from the Chicago Avenue station dug the place over to a depth of several feet. Nothing, however, was brought to light.
FORMING A THEORY.
In the light of the surroundings a theory of the circumstances under which the crime was committed was easily formed. Than the place itself a better one for such a purpose could not have been found. The street was absolutely dark after midnight, and even during the early evening the only outside light was that given by two kerosene lamps, one at each of the street intersections. Hence it was in comparative darkness all the evening. The house, moreover, was so near that of Sullivan's that it was probably an easy matter to decoy Dr. Cronin to it without arousing his suspicions. He had been struck the moment he entered the parlor, and fell in the corner of the room where the largest of the blood-stains appeared. The blow, however, had not deprived him of consciousness, and, gaining his feet he had engaged in a hand-to-hand struggle with his assailants. This was apparent from the manner in which the blood was spattered over the articles of furniture that were several feet distant from each other. It had evidently been in this struggle that the arm of the rocking-chair was broken. Another terrific blow had been dealt his head while he retreated backward, as was evidenced by the hair and blood upon the wall. The last foul blow having been struck, the unfortunate man, perhaps still breathing, was stripped naked and the body packed into the trunk, which was already in the house. Having thus disposed of the corpse the trunk was borne out of the building to the wagon, which stood on the roadside. As it was being carried down the steps the blood that gathered at one end seeped through the corners and left the two gory trails on the boards of the sidewalk and the plank crossing the ditch. Then there was the hurried drive to the catch-basin, the dumping of the body, still warm, into its recesses, and the disposal of the trunk. The murder having thus been accomplished and the body disposed of, the conspirators, with strange assurance of their safety, had returned to the cottage and endeavored to efface the evidence of their crime by taking up the carpet and then plastering the blood-stains with the paint—a mixture of yellow and brown ochre. Either they were in a hurry or there had been some interruption, for the job was not half done and the murderers, leaving behind all the evidences of their atrocious deed, vacated the cottage for good and all.
THE BLOOD EXAMINED BY EXPERTS.
One of the first things to be determined was whether the blood on the floor of the cottage and that found in the trunk was identical. Dr. Brandt and Dr. Hectone were sent for, and for the balance of the day they were busily engaged in making examinations and microscopic comparisons. By night they were in a position to declare that two things had been definitely established. First, that the blood found in the Carlson cottage was that of a human being, and second, that, so far as an expert examination by the most approved methods had gone, it went to prove that the blood taken from the trunk and that taken from the house came from one and the same body. This feature of the tragedy created the greatest interest in medical circles, from the fact that it was the first case on record in which such a comparison had been attempted.
"I examined the blood found in the trunk," said Dr. Brandt on the evening of the day in question, "soon after it was found and determined that it was human. The first thing to do was to determine whether the spots in the house were also human blood."
"How can you tell whether certain blood is that of a human being, or of some animal?" he was asked.