福尔摩斯-The Sign of the Four四签名 Chapter 10

Chapter 10 The End of the Islander

Our meal was a merry one. Holmes coud talk exceedingly well when he chose, and that night he did choose. He appeared to be in a state of nervous exaltation. I have never known him so brilliant. He spoke on a quick succession of subjects,--on miracle-plays, on medieval pottery, on Stradivarius violins, on the Buddhism of Ceylon, and on the war-ships of the future,-- handling each as though he had made a special study of it. His bright humor marked the reaction from his black depression of the preceding days. Athelney Jones proved to be a sociable soul in his hours of relaxation, and faced his dinner with the air of a bon vivant. For myself, I felt elated at the thought that we were nearing the end of our task, and I caught something of Holmes's gaiety. None of us alluded during dinner to the cause which had brought us together.

When the cloth was cleared, Holmes glanced at his watch, and filled up three glasses with port. "One bumper," said he, "to the success of our little expedition. And now it is high time we were off. Have you a pistol, Watson?"

"I have my old service-revolver in my desk."

"You had best take it, then. It is well to be prepared. I see that the cab is at the door. I ordered it for half-past six."

It was a little past seven before we reached the Westminster wharf, and found our launch awaiting us. Holmes eyed it critically.

"Is there anything to mark it as a police-boat?"

"Yes,--that green lamp at the side."

"Then take it off."

The small change was made, we stepped on board, and the ropes were cast off. Jones, Holmes, and I sat in the stern. There was one man at the rudder, one to tend the engines, and two burly police-inspectors forward.

"Where to?" asked Jones.

"To the Tower. Tell them to stop opposite Jacobson's Yard."

Our craft was evidently a very fast one. We shot past the long lines of loaded barges as though they were stationary. Holmes smiled with satisfaction as we overhauled a river steamer and left her behind us.

"We ought to be able to catch anything on the river," he said.

"Well, hardly that. But there are not many launches to beat us."

"We shall have to catch the Aurora, and she has a name for being a clipper. I will tell you how the land lies, Watson. You recollect how annoyed I was at being balked by so small a thing?"

"Yes."

"Well, I gave my mind a thorough rest by plunging into a chemical analysis. One of our greatest statesmen has said that a change of work is the best rest. So it is. When I had succeeded in dissolving the hydrocarbon which I was at work at, I came back to our problem of the Sholtos, and thought the whole matter out again. My boys had been up the river and down the river without result. The launch was not at any landing-stage or wharf, nor had it returned. Yet it could hardly have been scuttled to hide their traces,--though that always remained as a possible hypothesis if all else failed. I knew this man Small had a certain degree of low cunning, but I did not think him capable of anything in the nature of delicate finesse. That is usually a product of higher education. I then reflected that since he had certainly been in London some time--as we had evidence that he maintained a continual watch over Pondicherry Lodge--he could hardly leave at a moment's notice, but would need some little time, if it were only a day, to arrange his affairs. That was the balance of probability, at any rate."

"It seems to me to be a little weak," said I. "It is more probable that he had arranged his affairs before ever he set out upon his expedition."

"No, I hardly think so. This lair of his would be too valuable a retreat in case of need for him to give it up until he was sure that he could do without it. But a second consideration struck me. Jonathan Small must have felt that the peculiar appearance of his companion, however much he may have top-coated him, would give rise to gossip, and possibly be associated with this Norwood tragedy. He was quite sharp enough to see that. They had started from their head-quarters under cover of darkness, and he would wish to get back before it was broad light. Now, it was past three o'clock, according to Mrs. Smith, when they got the boat. It would be quite bright, and people would be about in an hour or so. Therefore, I argued, they did not go very far. They paid Smith well to hold his tongue, reserved his launch for the final escape, and hurried to their lodgings with the treasure- box. In a couple of nights, when they had time to see what view the papers took, and whether there was any suspicion, they would make their way under cover of darkness to some ship at Gravesend or in the Downs, where no doubt they had already arranged for passages to America or the Colonies."

"But the launch? They could not have taken that to their lodgings."

"Quite so. I argued that the launch must be no great way off, in spite of its invisibility. I then put myself in the place of Small, and looked at it as a man of his capacity would. He would probably consider that to send back the launch or to keep it at a wharf would make pursuit easy if the police did happen to get on his track. How, then, could he conceal the launch and yet have her at hand when wanted? I wondered what I should do myself if I were in his shoes. I could only think of one way of doing it. I might land the launch over to some boat-builder or repairer, with directions to make a trifling change in her. She would then be removed to his shed or yard, and so be effectually concealed, while at the same time I could have her at a few hours' notice."

"That seems simple enough."

"It is just these very simple things which are extremely liable to be overlooked. However, I determined to act on the idea. I started at once in this harmless seaman's rig and inquired at all the yards down the river. I drew blank at fifteen, but at the sixteenth--Jacobson's--I learned that the Aurora had been handed over to them two days ago by a wooden-legged man, with some trivial directions as to her rudder. 'There ain't naught amiss with her rudder,' said the foreman. 'There she lies, with the red streaks.' At that moment who should come down but Mordecai Smith, the missing owner? He was rather the worse for liquor. I should not, of course, have known him, but he bellowed out his name and the name of his launch. 'I want her to-night at eight o'clock,' said he,--'eight o'clock sharp, mind, for I have two gentlemen who won't be kept waiting.' They had evidently paid him well, for he was very flush of money, chucking shillings about to the men. I followed him some distance, but he subsided into an ale-house: so I went back to the yard, and, happening to pick up one of my boys on the way, I stationed him as a sentry over the launch. He is to stand at water's edge and wave his handkerchief to us when they start. We shall be lying off in the stream, and it will be a strange thing if we do not take men, treasure, and all."

"You have planned it all very neatly, whether they are the right men or not," said Jones; "but if the affair were in my hands I should have had a body of police in Jacobson's Yard, and arrested them when they came down."

"Which would have been never. This man Small is a pretty shrewd fellow. He would send a scout on ahead, and if anything made him suspicious lie snug for another week."

"But you might have stuck to Mordecai Smith, and so been led to their hiding-place," said I.

"In that case I should have wasted my day. I think that it is a hundred to one against Smith knowing where they live. As long as he has liquor and good pay, why should he ask questions? They send him messages what to do. No, I thought over every possible course, and this is the best."

While this conversation had been proceeding, we had been shooting the long series of bridges which span the Thames. As we passed the City the last rays of the sun were gilding the cross upon the summit of St. Paul's. It was twilight before we reached the Tower.

"That is Jacobson's Yard," said Holmes, pointing to a bristle of masts and rigging on the Surrey side. "Cruise gently up and down here under cover of this string of lighters." He took a pair of night-glasses from his pocket and gazed some time at the shore. "I see my sentry at his post," he remarked, "but no sign of a handkerchief."

"Suppose we go down-stream a short way and lie in wait for them," said Jones, eagerly. We were all eager by this time, even the policemen and stokers, who had a very vague idea of what was going forward.

"We have no right to take anything for granted," Holmes answered. "It is certainly ten to one that they go down-stream, but we cannot be certain. From this point we can see the entrance of the yard, and they can hardly see us. It will be a clear night and plenty of light. We must stay where we are. See how the folk swarm over yonder in the gaslight."

"They are coming from work in the yard."

"Dirty-looking rascals, but I suppose every one has some little immortal spark concealed about him. You would not think it, to look at them. There is no a priori probability about it. A strange enigma is man!"

"Some one calls him a soul concealed in an animal," I suggested.

"Winwood Reade is good upon the subject," said Holmes. "He remarks that, while the individual man is an insoluble puzzle, in the aggregate he becomes a mathematical certainty. You can, for example, never foretell what any one man will do, but you can say with precision what an average number will be up to. Individuals vary, but percentages remain constant. So says the statistician. But do I see a handkerchief? Surely there is a white flutter over yonder."

"Yes, it is your boy," I cried. "I can see him plainly."

"And there is the Aurora," exclaimed Holmes, "and going like the devil! Full speed ahead, engineer. Make after that launch with the yellow light. By heaven, I shall never forgive myself if she proves to have the heels of us!"

She had slipped unseen through the yard-entrance and passed behind two or three small craft, so that she had fairly got her speed up before we saw her. Now she was flying down the stream, near in to the shore, going at a tremendous rate. Jones looked gravely at her and shook his head.

"She is very fast," he said. "I doubt if we shall catch her."

"We MUST catch her!" cried Holmes, between his teeth. "Heap it on, stokers! Make her do all she can! If we burn the boat we must have them!"

We were fairly after her now. The furnaces roared, and the powerful engines whizzed and clanked, like a great metallic heart. Her sharp, steep prow cut through the river-water and sent two rolling waves to right and to left of us. With every throb of the engines we sprang and quivered like a living thing. One great yellow lantern in our bows threw a long, flickering funnel of light in front of us. Right ahead a dark blur upon the water showed where the Aurora lay, and the swirl of white foam behind her spoke of the pace at which she was going. We flashed past barges, steamers, merchant-vessels, in and out, behind this one and round the other. Voices hailed us out of the darkness, but still the Aurora thundered on, and still we followed close upon her track.

"Pile it on, men, pile it on!" cried Holmes, looking down into the engine-room, while the fierce glow from below beat upon his eager, aquiline face. "Get every pound of steam you can."

"I think we gain a little," said Jones, with his eyes on the Aurora.

"I am sure of it," said I. "We shall be up with her in a very few minutes."

At that moment, however, as our evil fate would have it, a tug with three barges in tow blundered in between us. It was only by putting our helm hard down that we avoided a collision, and before we could round them and recover our way the Aurora had gained a good two hundred yards. She was still, however, well in view, and the murky uncertain twilight was setting into a clear starlit night. Our boilers were strained to their utmost, and the frail shell vibrated and creaked with the fierce energy which was driving us along. We had shot through the Pool, past the West India Docks, down the long Deptford Reach, and up again after rounding the Isle of Dogs. The dull blur in front of us resolved itself now clearly enough into the dainty Aurora. Jones turned our search-light upon her, so that we could plainly see the figures upon her deck. One man sat by the stern, with something black between his knees over which he stooped. Beside him lay a dark mass which looked like a Newfoundland dog. The boy held the tiller, while against the red glare of the furnace I could see old Smith, stripped to the waist, and shovelling coals for dear life. They may have had some doubt at first as to whether we were really pursuing them, but now as we followed every winding and turning which they took there could no longer be any question about it. At Greenwich we were about three hundred paces behind them. At Blackwall we could not have been more than two hundred and fifty. I have coursed many creatures in many countries during my checkered career, but never did sport give me such a wild thrill as this mad, flying man-hunt down the Thames. Steadily we drew in upon them, yard by yard. In the silence of the night we could hear the panting and clanking of their machinery. The man in the stern still crouched upon the deck, and his arms were moving as though he were busy, while every now and then he would look up and measure with a glance the distance which still separated us. Nearer we came and nearer. Jones yelled to them to stop. We were not more than four boat's lengths behind them, both boats flying at a tremendous pace. It was a clear reach of the river, with Barking Level upon one side and the melancholy Plumstead Marshes upon the other. At our hail the man in the stern sprang up from the deck and shook his two clinched fists at us, cursing the while in a high, cracked voice. He was a good-sized, powerful man, and as he stood poising himself with legs astride I could see that from the thigh downwards there was but a wooden stump upon the right side. At the sound of his strident, angry cries there was movement in the huddled bundle upon the deck. It straightened itself into a little black man--the smallest I have ever seen--with a great, misshapen head and a shock of tangled, dishevelled hair. Holmes had already drawn his revolver, and I whipped out mine at the sight of this savage, distorted creature. He was wrapped in some sort of dark ulster or blanket, which left only his face exposed; but that face was enough to give a man a sleepless night. Never have I seen features so deeply marked with all bestiality and cruelty. His small eyes glowed and burned with a sombre light, and his thick lips were writhed back from his teeth, which grinned and chattered at us with a half animal fury.

"Fire if he raises his hand," said Holmes, quietly. We were within a boat's-length by this time, and almost within touch of our quarry. I can see the two of them now as they stood, the white man with his legs far apart, shrieking out curses, and the unhallowed dwarf with his hideous face, and his strong yellow teeth gnashing at us in the light of our lantern.

It was well that we had so clear a view of him. Even as we looked he plucked out from under his covering a short, round piece of wood, like a school-ruler, and clapped it to his lips. Our pistols rang out together. He whirled round, threw up his arms, and with a kind of choking cough fell sideways into the stream. I caught one glimpse of his venomous, menacing eyes amid the white swirl of the waters. At the same moment the wooden- legged man threw himself upon the rudder and put it hard down, so that his boat made straight in for the southern bank, while we shot past her stern, only clearing her by a few feet. We were round after her in an instant, but she was already nearly at the bank. It was a wild and desolate place, where the moon glimmered upon a wide expanse of marsh-land, with pools of stagnant water and beds of decaying vegetation. The launch with a dull thud ran up upon the mud-bank, with her bow in the air and her stern flush with the water. The fugitive sprang out, but his stump instantly sank its whole length into the sodden soil. In vain he struggled and writhed. Not one step could he possibly take either forwards or backwards. He yelled in impotent rage, and kicked frantically into the mud with his other foot, but his struggles only bored his wooden pin the deeper into the sticky bank. When we brought our launch alongside he was so firmly anchored that it was only by throwing the end of a rope over his shoulders that we were able to haul him out, and to drag him, like some evil fish, over our side. The two Smiths, father and son, sat sullenly in their launch, but came aboard meekly enough when commanded. The Aurora herself we hauled off and made fast to our stern. A solid iron chest of Indian workmanship stood upon the deck. This, there could be no question, was the same that had contained the ill- omened treasure of the Sholtos. There was no key, but it was of considerable weight, so we transferred it carefully to our own little cabin. As we steamed slowly up-stream again, we flashed our search-light in every direction, but there was no sign of the Islander. Somewhere in the dark ooze at the bottom of the Thames lie the bones of that strange visitor to our shores.

"See here," said Holmes, pointing to the wooden hatchway. "We were hardly quick enough with our pistols." There, sure enough, just behind where we had been standing, stuck one of those murderous darts which we knew so well. It must have whizzed between us at the instant that we fired. Holmes smiled at it and shrugged his shoulders in his easy fashion, but I confess that it turned me sick to think of the horrible death which had passed so close to us that night.

第十章 凶手的末日

我们这顿饭吃得很快乐。福尔摩斯在高兴的时候，谈锋向来是畅利的。今晚他的一精一神似乎异常愉快，所以天南地北谈个不休。我还从不知道他这样健谈，他从神怪剧谈到中世纪的陶器，意大利的斯特莱迪瓦利厄斯提琴，锡兰的佛学和未来的①战舰，——他对哪一方面，似乎全都特别研究过的，所以说起来滔一滔一不一绝，把这几天的郁闷也一扫而光了。埃瑟尔尼·琼斯在休息的时候也是一个一爱一说一爱一笑一性一情随和的人，他尽量欣赏着这顿考究的晚餐。在我个人则觉得全案的结束似乎就在今晚，也和福尔摩斯同样地愉快得开怀畅饮起来，宾主三人异常欢洽，没有人提到我们饭后的冒险任务——

①意大利人斯特莱迪瓦利厄斯所制造的提琴是世界驰名的。——译者注

饭后，福尔摩斯看了看表，斟满了三杯红葡萄酒道：“再干一杯，预祝今晚成功。时候到了，应该动身了。华生，你有手槍吗？”

“一抽一屉里有一支，是从前在军队里使用的。”

“你最好是带上它，有备而无患。车子已等在门外，我和他预订了六点半钟到这里来接咱们的。”

七点稍过，我们到达了西敏士特码头，汽船早已等候在那里了。福尔摩斯仔细地看了看，问道：“这船上有什么标志指明是警察使用的吗？”

“有，那船边上的绿灯。”

“那末，摘下去。”

绿灯摘下后，我们先后上船。船缆解一开了，琼斯、福尔摩斯和我都坐在船尾，另外一人掌舵，一人管机器，两个一精一壮的警长坐在我们的前面。

琼斯问道：“船开到哪里去？”

“到伦敦塔，告诉他们，把船停在杰克勃森船坞的对面。”

我们的船速度确实很快，超越过无数满载的平底船，又超越过一只小汽船，福尔摩斯微笑地表示满意。

他道：“照这样的速度，我们可以把河里的什么船都赶上了。”

琼斯道：“那倒不见得，不过能够赶上我们这样速度的汽船，确是不多见的。”

“我们必须赶上曙光号，那是一只有名的快艇。华生，现在没有事，我可以把目前发展的情况和你讲讲。你记得不记得我说过一个很不算什么的障碍把我难住了，我是决不甘心的吗？”

“还记得。”

“我利用作化学分析试验的办法使我的脑筋得到了彻底的休息。咱们的一位大政治家曾经说过：‘改变工作，是最好的休息。这句话一点儿也不错。当我把溶解碳氢化合物的实验作成功以后，我就回到舒尔托的问题上面，把这问题重新考虑了一遍。我所派遣的孩子们在上下游都搜遍了，也没有结果。这只汽船既没有停泊在任何码头上又没有回转，也不太象为了灭迹而自沉——如果实在找不着，当然这还算是个可能的假设。我知道斯茂多少有些狡猾的伎俩，可是我认为他没有受多少教育，还不可能有那样周密的手段。他既然在伦敦居住饼相当久——这一点由他对樱沼别墅侦伺了很久的事实就可以证明，他不可能不需要一个短时间——哪怕是一天——作些准备，方能离开他的巢一穴一远行。无论如何，这是一个可能一性一。”

我道：“我看这个可能一性一不太大，恐怕他在行动以前早已作了远行的准备。”

“不然，我不这样想。除非等到他确知这个巢一穴一对他已经毫无用处，他决不会轻易放弃的。我又想到了一层：琼诺赞·斯茂一定会料想到，他那同谋的那副怪相，不管把他怎样改装起来也会引起别人注意的，并且会令人联系到诺伍德惨案上去，斯茂的机警不会把这一层忽略的。为了避人耳目，他们天黑以后离开巢一穴一，还必须在天明以前赶回来。根据斯密司太太所说，他们在斯密司码头上船的时候是在三点钟，再过一个多钟头天就要大亮，行人也多了。所以我认为他们是不会走得太远的。他们给足了斯密司钱，叫他不要声张，预订下他的船，以备最后的远飏，然后携带宝物回到巢一穴一。在一两天内看看报纸，听听风声，再择一个夜晚从葛雷夫赞德或肯特大码头乘上他们已经订好船位的大船，逃往美洲或其他殖民地去。”

“可是他不能够把这只船也带到巢一穴一里去呀。”

“当然不能够。我认为，这只船虽然没有被我们发现，可也不会离开太远。处在斯茂的地位，根据他这个人的能力来设想，他会想到：如果确有警察跟踪的话，那末，如果把船遣回或是把它停在码头旁边，都会使追踪更容易得多了。那末怎样才能够把船隐蔽起来，同时要用它的时候还不至于误事呢？如果我站在他的立场上应当怎么办呢？我想，只有一个办法，就是把船开进一个船坞里小作修理，如此既可达到隐蔽的目的，还可在提前几个小时通知的情况下使用。”

“这似乎是很简单的。”

“正因为很简单，才容易被忽略了。于是我决定照着这个途径去进行侦查。我立刻穿了一身水手的服装到下游的每个船坞里去询问。问了十五个船坞全失败了，可是问到第十六个——杰克勃森船坞——得知在两天前曾有一个装木腿的人把曙光号送进船坞修理船舵。那里的工头和我说：‘就是那个画着红线的船舵，其实一点儿一毛一病也没有。正说着，从那边来了一个人。不是别人，正是失踪的船主茂迪凯·斯密司，他喝了不少的酒。我自然不会认识他，是他喊出了自己的名字和船的名字，并说道：‘今晚八点钟我们的船要出坞去。记住了，准八点钟。有两位客人要坐船，不要耽误了。匪徒们一定给了他不少的钱，他对工人们拍着他满口袋的银币，叮当作响。我跟踪了他几步，他跑进了一家酒馆。于是我又回到船坞，在途中碰巧遇到了我的一个小帮手，我把他安置在那里，盯住汽船。让他站在船坞的出口地方，预约定了，当票船出坞的时节，向我们挥动手巾作为暗号。我们在河上歇一下，看着他的去路，要不是人赃并获那才是怪事呢。”

琼斯道：“不管这几个人是不是真的凶手，你的准备是很周密的。不过要是我，我一定派几个能干的警察，等到匪徒来到杰克勃森船坞时，就把他们当场逮捕了。”

“这个我可不敢赞同，因为斯茂是个很狡猾的人，他起行以前一定先派人查看动静，如有可疑的情况，他自然又要再隐匿一个时期。”

我道：“可是你若盯紧了茂迪凯·斯密司也可以把匪一穴一找到呀。”

“那样我的时光就全要一浪一费了。我想匪徒们的住处九成九斯密司是不知道的。斯密司有酒喝、有钱花，其余的问它做什么？有事时匪徒们派人通知他就行啦。我各方面都考虑到了，我以为这是最好的办法。”

谈话之间，我们已经穿过了泰晤士河上的几座桥。当我们出了市区的时候，落日余辉已将圣保罗教堂房顶上的十字架照得金光闪闪。在我们还没有到达伦敦塔的时候，就已是黄昏时分了。

福尔摩斯远远指着靠萨利区河岸桅墙密立的地方说道："那就是杰克勃森船坞，让我们的船借着这一串驳船的掩护，慢慢地来回游戈。"他又用望远镜向岸上观察，说道：“我已经找到了我派的那个人，可是手巾还没有挥动。”

琼斯很一性一急地说道：“咱们还是停泊到下游等着他们吧。”这时我们都很焦急，就是那几个对于我们的任务不太清楚的警长和火夫，也在那里现出跃跃欲试的神气。

福尔摩斯答道：“虽然十分之九他们会往下游去的，可是我们不能擅自把上游忽略了。从我们目前这个地方能够看见船坞的出入口，可是他们却不容易看见咱们。今晚没有云雾，月光很亮，咱们就在这儿吧。你看见那边煤气灯光的下面，来往的人够多么拥挤。”

“那都是从船坞下工的工人们。”

“这些人的外表虽然肮脏粗俗，可是每个人的内心全有一些不灭的生气。只看他们的外表，你是想不到的。这并不是先天的，人生就是一个谜。”

我道：“有人说：人是动物中有灵魂的。”

福尔摩斯道：“一温一伍德·瑞德对这个问题有很好的解释。他论道虽然每个人都是难解的谜，可是把人类聚合起来，就有定律了。譬如说，你不能预知一个人的个一性一，可是能够确知人类的共一性一。个一性一不同，共一性一却是永恒的，统计家们也是这样的说法……你们看见那条手巾了吗？那边确有一个白色的东西在挥动着。”

我喊道：“不错，那就是你派的小帮手，我看得很清楚。”

福尔摩斯喊道：“那就是"曙光"号，你看它的速度真快。机师，咱们加速前进，紧追着那有黄灯的汽船。假若咱们追不上它，我是永远不能原谅自己的。”

“曙光"号已经从船坞开了出去，被两三条小船遮得看不见了。等到我们再看见它的时候，它已经驶得相当快了。它在沿着河岸向下游急进，琼斯看了只是摇头，说道：“这船神速极了，咱们恐怕追不上它。”

福尔摩斯叫道：“咱们必须追上它。火夫，快快地加煤！尽全力赶上去！就是把咱们的船烧了，也要赶上它！”

我们紧追在后面，锅炉火势凶猛。马力强大的引莂e，起喘吁吁，铿锵作响，好似一具钢铁的心脏，尖尖的船头划破平静的河水，向左右两侧各自冲起一股滚滚的一浪一花来，随着引莂e的每一次悸一动，船身在震颤、跃进，就象是一个有生命的东西似的。船舷上的一盏大黄灯向前方射一出了长长的闪烁的光束。前面远远的一个黑点，就是"曙光"号，它后边有两行白色一浪一花，说明了它航行的神速。那时河上的大小船只很多，我们横穿侧绕着飞掠过去。可是曙光

福尔摩斯向机器房喊道：“伙计们，快加煤，多加煤！尽力多烧蒸汽往前赶！"下面机器房的熊熊烈火照射着他那焦急的鹰鹫似的面孔。

琼斯望着"曙光"号说道：“我想咱们已经赶上一点了。”

我道："咱们确已赶上不少了，再有几分钟就可以追上了。”

正在这时，不幸的事来了。一只汽船拖了三只货船横在我们面前。幸而我们急转船舵，才避免了和它相撞。可是等到我们绕过它们，继续追下去的时候，“曙光"号已经又走远了足有二百多码了，不过还能看得到它。当时，一陰一暗朦胧的暮色已经变成了满天星斗的夜晚。我们的锅炉已烧到了极度，驱船前进的力量强大异常，使脆弱的船壳咯吱作响，颤一动不已。我们已经由伦敦桥的正中下面穿过，过了西印船坞和长长的戴特弗德河区，又绕过了狗岛。以前只是一个黑点的"曙光"号现在已经看得很清楚了。琼斯把我们的探照灯向它直射，照见了船面上的人影。一个人坐在船尾，两一腿跨着一个黑的东西，旁边还蹲伏着一堆黑影子，好象一只纽芬兰狗。一个男孩把舵，从锅炉的红光中，可以看见斯密司光着上身在拚命地加谋。起初他们或者还不能肯定我们是否是在追赶他们，可是到现在我们在每个转弯抹角的地方都紧紧地跟在后面，那就没有问题是在追他们了。在到了格林威治的时候，两船的距离约有三百步，再到布莱克沃尔时两船相隔已不过二百五十步了。我奔波了一生，在不少的国家里都打过猎，也追赶过不少的野兽，然而都没有象今晚在泰晤士河上追人这样惊险出破。我们和前船已是一步接近一步了，在寂静的夜里，可以很清楚地听到前面船上机器的响声。坐在船尾上的那个人还是蹲在那里，两手似乎挥动得很忙，不断地抬起头来估量两船的距离。我们相距更近了，只有四只船的长短，两船仍在飞奔前驶。这时已近河口，一边岸上是巴克英平地，另一侧则是普拉姆斯梯德沼泽。琼斯喝叫着命令前船速停，船尾那个人听见我们的喊叫，从船面上站起来挥动两拳，向着我们高声怒骂。他的身一体健壮，个子高大，两一腿撇开站在那里。我看见他的右边大一腿下面只是根木柱支着。他旁边蜷伏着的黑影子，听见了他的声音，慢慢地站了起来，原来是一个黑人，体格的矮小我从来没有见过。他那畸形的大头，上面长着蓬乱的头发。福尔摩斯那时已经把手槍拿在手里，我看见了这个怪状的生番，也把手槍掏了出来。他围着一件黑色的好似毯子的东西，只露着脸。可是这个脸，那副丑恶的怪状足以令人丧魂失魄。我从没有看见过这样狞恶的怪相，他那两个小眼凶光闪闪，嘴唇极厚，从牙根向上翻撅一着，他在向我们狂喊乱叫，半兽一性一的暴怒在发作。

福尔摩斯轻轻地向我说道：“只要他一抬起手来，咱们就开槍。"这时彼此之间只有一船之隔了，看得更清楚了。那个白人品着两一腿不断地怒骂，那个矮小的黑人满脸忿恨地向着我们的灯光，咬牙切齿地狂叫。

幸而我们看他们看得很清楚。那个小黑人从毯子里掏出了一个好似木尺的短圆的木棒搁在唇边。我们立即扳动槍机，两弹启发。那黑人转了转身就两手高举，跌入河内，刹那之间我就看到他那一双狠毒的眼睛在白色的漩涡之中消失了。这时，那装木腿的人冲向船舵，用尽他全身力量扳那舵一柄一，那船突向南岸冲去，我们以相差几尺的距离躲开了它的船尾总算没有撞上。我们随即转变方向追上前去。那时"曙光"号已经接近南岸，岸上是一起荒凉的旷野，月光照着空旷的沼地，地面上聚着一片片的死水和一堆堆的腐烂植物。那只汽船冲到岸上就搁浅了，船头耸向空中，船尾没在水里。那匪徒跳到了岸上，可是他那只木腿整个陷入泥中。他用力挣扎，可是连一步也进退不得。他狂喊乱叫地跳动着左脚，可是那木腿却在泥里愈陷愈深。等我们把船靠了岸，他已经被钉在那里寸步难行了。我们从船上扔一条绳子过去套住了他的肩膀，才把他好似拉鱼似地拖上了船。斯密司父子二人愁眉苦脸地坐在船上，听了我们的命令，方才无可奈何地离开了"曙光"号走到这边船上来。一只印度一精一制的铁箱，摆在那只船甲板上边，不用问就知道是使舒尔托遭祸的宝箱。箱上没有钥匙，非常沉重，我们小心地把它搬到我们的舱里。我们把"曙光"号拖在后面，慢慢地向上游回驶。我们不断地用探照灯向河水四面映照，可是那黑人早已踪影不见，想必已葬身泰晤士河底了。

福尔摩斯指着舱口说道："看这里，我们的槍几乎打晚了。"靠着我们先前站的地方的后面插着一支毒刺，大约就是在我们放槍的时候射来的。福尔摩斯对着毒刺仍象平时那样地耸耸肩微微地一笑，可是我每回想到那天晚上危在须臾的情况，仍不免十分惊悸。