"Another of my late employer's peculiarities," he answered, "was that he never gave or took receipts in what one may call word-of-mouth transactions! He had a rooted--almost savage--objection to anybody asking him for a receipt for cash; he absolutely refused to take one if he paid cash. I've seen him pay several thousand pounds for a purchase and fling the proffered receipt in the fire in the purchaser's presence. He used to ask--vehemently!--if you wanted receipts for a loaf of bread or a pound of beef-steak. I'm afraid we shan't find much of that sort. As to letters and memoranda, Mr. Herapath had a curious habit which gave me considerable trouble of mind when I first went to him, though I admit it was a simple one. He destroyed every letter he ever got as soon as he'd answered it. And as he insisted on everything being answered there and then, there's no great accumulation of paper in that way!" "We'll see what there is, anyhow," said the Professor. "If we could find something, anything--a mere business card, a letter-heading--that would give us Dimambro's permanent address, it would be of use. For I'm more and more convinced that Dimambro was the man who called at the House of Commons that night, and if it was Burchill who dined with him that same evening, why, then--but come along, let's have a look at Jacob's desk in the house here, and after that we'll go down to the estate offices and see if we can find anything there." This was a Saturday morning--during the whole of that afternoon and evening the Professor and Selwood examined every drawer and receptacle in which Jacob Herapath's papers lay, both at Portman Square and at Kensington. And, exactly as Selwood had said, there was next to nothing of a private nature. Papers relating to Parliamentary matters, to building schemes, to business affairs, there were in plenty, duly filed, docketed, and arranged, but there was nothing of the sort that Cox-Raythwaite hoped to find, and when they parted, late at night, they were no wiser than when they began their investigations. "Go home to bed," counselled the Professor. "Put the whole thing out of your head until Monday morning. Don't even think about it. Come and see me on Monday, first thing, and we'll start again. For by the Lord Harry! I'll find out yet what the real nature of Jacob Herapath's transaction with Dimambro was, if I have to track Dimambro all through Italy!"