“No,” Thorndyke replied. “The time excludes that possibility. The blood was certainly shed after six. They were undoubtedly nocturna, and the large numbers found suggest a late hour. The parasites come out of the tissues very gradually, and it is only about midnight that they appear in the blood in really large numbers.”
“That is very important,” said the coroner. “But does this disease affect any particular class of persons?”
“Yes,” Thorndyke replied. “As the disease is con fined to tropical countries, the sufferers are naturally residents of the tropics, and nearly always natives. In West Africa, for instance, it is common among the negroes but practically unknown among the white residents.”
“Should you say that there is a distinct probability that this unknown person was a negro?”
“Yes. But apart from the filaria there is direct evidence that he was. Searching for some cause of the bleeding, I noticed a lamp-hook screwed into the ceiling, and low enough to strike a tall man’s head. I examined it closely, and observed on it a dark, shiny mark, like a blood-smear, and one or two short coiled hairs which I recognised as the scalp-hairs of a negro. I have no doubt that the unknown man is a negro, and that he has a wound of the scalp.”
“Does filarial disease produce any effects that can be recognised?
“Frequently it does. One of the commonest effects produced by Filaria nocturna, especially among negroes, is the condition known as elephantiasis. This consists of an enormous swelling of the extremities, most usually of one leg, including the foot; whence the name. The leg and foot look like those of an elephant. As a matter of fact, the negro who was in the hall suffered from elephantiasis of the left leg. I observed prints of the characteristically deformed foot on the oil-cloth covering the floor.”
Thorndyke’s evidence was listened to with intense interest by everyone present, including myself. Indeed, so spell-bound was his audience that one could have heard a pin drop; and the breathless silence continued for some seconds after he had ceased speaking. Then, in the midst of the stillness, I heard the door creak softly behind me.
There was nothing particularly significant in the sound. But its effects were amazing. Glancing at the inspector, who faced the door, I saw his eyes open and his jaw drop until his face was a very mask of astonishment. And as this expression was reflected on the faces of the jurymen, the coroner and everyone present, excepting Thorndyke, whose back was towards the door, I turned to see what had happened. And then I was as astonished as the others.
The door had been pushed open a few inches and a head thrust in—a negro’s head, covered with a soiled and blood rag forming a rough bandage. As I gazed at the black, shiny, inquisitive face, the man pushed the door farther open and shuffled into the room; and instantly there arose on all sides a soft rustle and an inarticulate murmur followed by breathless silence, while every eye was riveted on the man’s left leg.
It certainly was a strange, repulsive—looking member, its monstrous bulk exposed to view through the slit trouser and its great shapeless foot—shoeless, since no shoe could have contained it—rough and horny like the foot of an elephant. But it was tragic and pitiable, too for the man, apart from this horrible excrescence, was a fine, big, athletic-looking fellow.
The coroner was the first to recover. Addressing Thorndyke, but keeping an eye on the negro, he said: “Your evidence, then, amounts to this: On the night of Joseph Riggs’ death, there was a stranger in the house. That stranger was a negro, who seems to have wounded his head and who, you say, had a swelled left leg.”
“Yes,” Thorndyke admitted, “that is the substance of my evidence.”
Once more a hush fell on the room. The negro stood near the door, rolling his eyes to and fro over the assembly as if uneasily conscious that everyone was looking at him. Suddenly, he shuffled up to the foot of the table and addressed the coroner in deep, buzzing, resonant tones. “You tink I kill dat ole man! I no kill um. He kill himself. I look um.”
Having made this statement, he rolled his eyes defiantly round the court, and then turned his face expectantly towards the coroner, who said: “You say you know that Mr. Riggs killed himself?”
“Yas. I look um. He shoot himself. You tink I shoot urn. I tell you I no shoot um. Why I fit kill this man? I no sabby um.”
“Then,” said the coroner, “if you know that he killed himself, you must tell us all that you know; and you must swear to tell us the truth.”
“Yas,” the negro agreed, “I tell you eberyting one time. I tell you de troof. Dat ole man kill himself.”
When the coroner had explained to him that he was not bound to make any statement that would incriminate him, as he still elected to give evidence, he was sworn and proceeded to make his statement with curious fluency and self-possession.
“My name Robert Bruce. Dat my English name. My country name Kwaku Mensah. I live for Winnebah on de Gold Coast. Dis time I cook’s mate for dat steamer Leckie. On Wednesday night I lay in my bunk. I no fit sleep. My leg he chook me. I look out of de porthole. Plenty moon live. In my country when de moon big, peoples walk about. So I get up. I go ashore to walk about de town. Den de rain come. Plenty rain. Rain no good for my sickness. So I try for open house doors. No fit. All doors locked. Den I come to dis ole man’s house. I turn de handle. De door open. I go in. I look in one room. All dark. Nobody live. Den I look annudder room. De door open a little. Light live inside. I no like dat I tink, spose somebody come out and see me, be link I come for teef someting. So I tink I go away.
“Den someting make ‘Ping!’ same like gun. I hear someting faIl down in dat room. I go to de door and I sing out, ‘Who live in dere?’ Nobody say nutting. So I open de door and look in. De room full ob smoke. I look dat ale man on de floor. I look dat pistol. I sabby dat ole man kill himself. Den I frighten too much. I run out. D place all dark. Someting knock my head. He make blood come plenty. I go back for ship. I no say nutting to nobody. Dis day I hear peoples talk ’bout dis inquess to find out who kill dat ole man. So I come to hear what peoples say. I hear dat gentleman say I kill dat ole man. So I tell you eberyting. I tell you de troof. Finish.”
“Do you know what time it was when you came ashore?” the coroner asked.
“Yas. When I come down de ladder I hear eight bells ring. I get back to de ship jus’ before dey ring two bells in de middle watch.”
“Then you came ashore at midnight and got back just before one o’clock?”
“Yas. Dat is what I say.”
A few more questions put by the coroner having elicited nothing fresh, the case was put briefly to the jury.
“You have heard the evidence, gentlemen, and most remarkable evidence it was. Like myself, you must have been deeply impressed by the amazing skill with which Dr. Thorndyke reconstructed the personality of the unknown visitor to that house, and even indicated correctly the very time of the visit, from an examination of a mere chance blood-stain. As to the statement of Kwaku Mensab, I can only say that I see no reason to doubt its truth. You will note that it is in complete agreement with Dr. Thorndyke’s evidence, and it presents no inconsistencies or improbabilities. Possibly the police may wish to make some further inquiries, but for our purposes it is the evidence of an eyewitness, and as such must be given full weight. With these remarks, I leave you to consider your verdict.”
The jury took but a minute or two to deliberate. Indeed, only one verdict was possible if the evidence was to be accepted, and that was agreed on unanimously—suicide whilst temporarily insane. As soon as it was announced, the inspector, formally and with congratulations, released Fletcher from custody, and presently retired in company with the negro to make a few inquiries on board the ship.
The rising of the court was the signal for a wild demonstration of enthusiasm and gratitude to Thorndyke. To play his part efficiently in that scene he would have needed to be furnished, like certain repulsive Indian deities, with an unlimited outfit of arms. For everyone wanted to shake his hand, and two of them—Mr. Foxley and Miss