"I think that there is a small experiment which we may try to-morrow, Watson, in order to throw some light on the matter. Meanwhile, if we mean to keep up our characters, I suggest that we have our host in for a glass of his own wine and hold some high converse upon eels and dace, which seems to be the straight road to his affections. We may chance to come upon some useful local gossip in the process."
In the morning Holmes discovered that we had come without our spoon-bait for jack, which absolved us from fishing for the day. About eleven o'clock we started for a walk, and he obtained leave to take the black spaniel with us.
"This is the place," said he, as we came to two high park gates with heraldic griffins towering above them. "About midday, Mr. Barnes informs me, the old lady takes a drive, and the carriage must slow down while the gates are opened. When it comes through, and before it gathers speed, I want you, Watson, to stop the coachman with some question. Never mind me. I shall stand behind this holly-bush and see what I can see."
It was not a long vigil. Within a quarter of an hour we saw the big open yellow barouche coming down the long avenue, with two splendid, high-stepping grey carriage horses in the shafts. Holmes crouched behind his bush with the dog. I stood unconcernedly swinging a cane in the roadway. A keeper ran out and the gates swung open.
The carriage had slowed to a walk and I was able to get a good look at the occupants. A highly-coloured young woman with flaxen hair and impudent eyes sat on the left. At her right was an elderly person with rounded back and a huddle of shawls about her face and shoulders which proclaimed the invalid. When the horses reached the high road I held up my hand with an authoritative gesture, and as the coachman pulled up I inquired if Sir Robert was at Shoscombe Old Place.
At the same moment Holmes stepped out and released the spaniel. With a joyous cry it dashed forward to the carriage and sprang upon the step. Then in a moment its eager greeting changed to furious rage, and it snapped at the black skirt above it.
"Drive on! Drive on!" shrieked a harsh voice. The coachman lashed the horses, and we were left standing in the roadway.
"Well, Watson, that's done it," said Holmes, as he fastened the lead to the neck of the excited spaniel. "He thought it was his mistress and he found it was a stranger. Dogs don't make mistakes."
"But it was the voice of a man!" I cried.
"Exactly! We have added one card to our hand, Watson, but it needs careful playing, all the same."