“What do you think of it?” I asked.

He sat on the edge of the table and swung his leg, wrapt in thought for a moment.

“I’m very glad to say I don’t know what to think of it,” he replied presently.

“Why glad?” I asked anxiously.

“Because, my dear sir, this is so remarkable that if I thought I could see a solution I should probably be making a mistake. This is something I am learning about for the first time; and, frankly, it interests me intensely.”

Suddenly he sat down abruptly, with a muttered “Now, then,” and began to catechise me in a most extraordinarily searching manner, firing off question after question with the rapidity of a maxim gun.

I shall not detain the reader with details of this catechism. His inquiries ranged from the system on which the house was lighted and the number of hours Myra averaged per week on the sea to the make of the engine in her motor-boat. His last question was: “Does anybody drink the river water?”

“Windows that flash in the sun seem to me to be confusing the issue,” he said at last. “Windows must always reflect light in a certain direction at a certain time, and though they may be irritating they could not possibly produce even temporary blindness. Still, we won’t forget them, Mr. Ewart, though we had better put them aside for a moment. Now, how soon can you bring Miss McLeod to see me?”

“We had hoped,” I ventured to suggest, “that you would be able to run up and see her, and have a look at the ground. You could then examine the dog as well.”

“I’ll be perfectly candid with you, Mr. Ewart,” he replied. “I was just going to start on a short holiday. I was going to Switzerland; but the war has knocked that on the head, so I am just running up to Perthshire for a week’s fishing. I need a holiday very badly, more especially as I have undertaken some Government work in connection with the war. Fortunately, I am a bachelor, and I will willingly give up a couple of days to Miss McLeod.”