down the street, tugging at his leash in his efforts to go faster. In half an hour, we were clear of the town and hastening down a country road.
“What have you done, Holmes?” I asked.
“"A threadbare and venerable device, but useful upon occasion. I walked into the doctor's yard this morning, and shot my syringe full of aniseed over the hind wheel. A draghound will follow aniseed from here to John o' Groat's, and our friend, Armstrong, would have to drive through the Cam before he would shake Pompey off his trail. Oh, the cunning rascal! This is how he gave me the slip the other night.”
The dog had suddenly turned out of the main road into a grass-grown lane. Half a mile farther this opened into another broad road, and the trail turned hard to the right in the direction of the town, which we had just quitted. The road took a sweep to the south of the town, and continued in the opposite direction to that in which we started.
“This détour has been entirely for our benefit, then?” said Holmes. “No wonder that my inquiries among those villages led to nothing. The doctor has certainly played the game for all it is worth, and one would like to know the reason for such elaborate deception. This should be the village of Trumpington to the right of us. And, by Jove! here is the brougham coming round the corner. Quick, Watson quick, or we are done!”
He sprang through a gate into a field, dragging the reluctant Pompey after him. We had hardly got under the shelter of the hedge when the carriage rattled past. I caught a glimpse of Dr. Armstrong within, his shoulders bowed, his head sunk on his hands, the very image of distress. I could tell, by my companion's graver face, that he also had seen.
