银色马 16（在线收听）

“It’s this way, Watson,” said he at last. “We may leave the question of who killed John Straker for the instant and confine ourselves to finding out what has become of the horse. Now, supposing that he broke away during or after the tragedy, where could he have gone to? The horse is a very gregarious creature. If left to himself his instincts would have been either to return to King’s Pyland or go over to Mapleton. Why should he run wild upon the moor? He would surely have been seen by now. And why should gypsies kidnap him? These people always clear out when they hear of trouble, for they do not wish to be pestered by the police. They could not hope to sell such a horse. They would run a great risk and gain nothing by taking him. Surely that is clear.”

“Where is he, then?”

“I have already said that he must have gone to King’s Pyland or to Mapleton. He is not at King’s Pyland. Therefore he is at Mapleton. Let us take that as a working hypothesis and see what it leads us to. This part of the moor, as the inspector remarked, is very hard and dry. But it falls away towards Mapleton, and you can see from here that there is a long hollow over yonder, which must have been very wet on Monday night. If our supposition is correct, then the horse must have crossed that, and there is the point where we should look for his tracks.”

We had been walking briskly during this conversation, and a few more minutes brought us to the hollow in question. At Holmes’s request I walked down the bank to the right, and he to the left, but I had not taken fifty paces before I heard him give a shout and saw him waving his hand to me. The track of a horse was plainly outlined in the soft earth in front of him, and the shoe which he took from his pocket exactly fitted the impression.

“See the value of imagination,” said Holmes. “It is the one quality which Gregory lacks. We imagined what might have happened, acted upon the supposition, and find ourselves justified. Let us proceed.”

    “华生，这样吧，”他终于说道，“我们先把是谁杀害约翰-斯特雷克的问题暂时放下，目前仅限于寻找马的下落。现在，假设在悲剧发生的当时或在悲剧发生后，这骑马脱缰逃跑，它能跑到什么地方去呢？马是爱合群的。按照它的本性，它不是回到金斯皮兰马厩，就是跑到梅普里通马厩去了。它怎么会在荒原上乱跑呢？假使如此，它一定会被人看到的。吉卜赛人又为什么要拐走它呢？这些人品常一听说出了什么乱子，总是躲得远远的，唯恐被警察纠缠不休。他们是不会认为能卖掉这样一匹名驹的。要是带上它，他们要冒很大风险而且一无所获，这一点是非常清楚的。”

    “那么，马在哪里呢？”

    “我已经说过，它不是到金斯皮兰就是到梅普里通去了。现在不在金斯皮兰，那一定在梅普里通。我们就按这个假想去办，看结果怎么样。警长说过，这一片荒原的土质非常坚硬而且干燥，可是向梅普里通地势则愈来愈低，从这里你可以看到那边是一个长长的低洼地带，在星期一夜晚一定是非常潮湿的。要是我们的假定不错，那么这匹名驹必然会经过那里，我们就可以在那里找到它的蹄印了。”

    我们边谈边走，兴致勃勃，几分钟以后，就走到我们所说的洼地了。我按照福尔摩斯的要求，向右边走去，福尔摩斯则走向左方，可是我走了还不到五十步，就听到他叫我，并且看到他向我招手。原来在他面前松软的土地上有一些清晰的马蹄印，而福尔摩斯从袋里取出马蹄铁与地上的蹄印一对照，竟完全吻合。

    “你瞧设想该是多么重要，”福尔摩斯说道，“格雷戈里就缺乏这种素质。我们对已发生的事可能是什么有所设想，并按设想的情况去办，结果证明有道理。那我们就进行下去吧。”