A wry smile and a shake of the head was Tremayne’s only answer; and then Carruthers came in fresh from Lisbon, where he had been upon business connected with the commissariat, and to Tremayne’s relief the subject was perforce abandoned.

Yet he marvelled several times that day that the hilarity he should have awakened in Sir Terence continued to cling to the adjutant, and that despite the many vexatious matters claiming attention he should preserve an irrepressible and almost boyish gaiety.

Meanwhile, however, the coming of Carruthers had brought the adjutant a moment’s seriousness, and he reverted to the business of Captain Garfield. When he had mentioned the missing note, Carruthers very properly became grave. He was a short, stiffly built man with a round, good-humoured, rather florid face.

“The matter must be probed at once, sir,” he ventured. “We know that we move in a tangle of intrigues and espionage. But such a thing as this has never happened before. Have you anything to go upon?”

“Captain Stanhope gave us nothing,” said the adjutant.

“It would be best perhaps to get Grant to look into it,” said Tremayne.

“If he is still in Lisbon,” said Sir Terence.

“I passed him in the street an hour ago,” replied Carruthers.

“Then by all means let a note be sent to him asking him if he will step up to Monsanto as soon as he conveniently can. You might see to it, Tremayne.”

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