"That is a grim thought," said Jervis; "But it is perfectly true. There is no evidence that the man was not lying dead in the house at the very time of the search."
"But even so," said I, "there was the body to be disposed of somehow. Now how could he possibly have got rid of the body without being observed?"
"Ah!" said Thorndyke, "now we are touching on a point of crucial importance. If anyone should ever write a treatise on the art of murder--not an exhibition of literary fireworks like De Quincey's, but a genuine working treatise--he might leave all other technical details to take care of themselves if he could describe some really practicable plan for disposing of the body. That is, and always has been, the great stumbling-block to the murderer: to get rid of the body. The human body," he continued, thoughtfully regarding his pipe, just as, in the days of my pupilage, he was wont to regard the black-board chalk, "is a very remarkable object. It presents a combination of properties that makes it singularly difficult to conceal permanently. It is bulky and of an awkward shape, it is heavy, it is completely incombustible, it is chemically unstable, and its decomposition yields great volumes of highly odorous gases, and it nevertheless contains identifiable structures of the highest degree of permanence. It is extremely difficult to preserve unchanged, and it is still more difficult completely to destroy. The essential permanence of the human body is well shown in the classical case of Eugene Aram; but a still more striking instance is that of Seqenen-Ra the Third, one of the last kings of the seventeenth Egyptian dynasty. Here, after a lapse of some four thousand years, it has been possible to determine, not only the cause of death and the manner of its occurrence, but the way in which the king fell, the nature of the weapon with which the fatal wound was inflicted, and even the position of the assailant. And the permanence of the body under other conditions is admirably shown in the case of Doctor Parkman, of Boston, U.S.A., in which identification was actually effected by means of remains collected from the ashes of a furnace."
"Then we may take it," said Jervis, "that the world has not yet seen the last of John Bellingham."
"I think we may regard that as almost a certainty," replied Thorndyke. "The only question--and a very important one--is as to when the reappearance may take place. It may be to-morrow or it may be centuries hence, when all the issues involved have been forgotten."