'Take that to Summertrees, and get back as quickly as possible. Have you a cab at the door?'
'Not so much, sir, as it was an hour ago. No difficulty about the traffic now, sir.'
'Very well, get back as soon as you can.'
Podgers saluted, and left with the book under his arm. Again the door was locked, and again we sat smoking in silence until the stillness was broken by the tinkle of the telephone. Hale put the receiver to his ear.
'Yes, this is the Imperial Flats. Yes. Valmont. Oh, yes; Macpherson is here. What? Out of what? Can't hear you. Out of print. What, the encyclopaedia's out of print? Who is that speaking? Dr. Willoughby; thanks.'
Macpherson rose as if he would go to the telephone, but instead (and he acted so quietly that I did not notice what he was doing until the thing was done), he picked up the sheet which he called his visiting list, and walking quite without haste, held it in the glowing coals of the fireplace until it disappeared in a flash of flame up the chimney. I sprang to my feet indignant, but too late to make even a motion outwards saving the sheet. Macpherson regarded us both with that self-deprecatory smile which had several times lighted up his face.
'How dared you burn that sheet?' I demanded.
'Because, Monsieur Valmont, it did not belong to you; because you do not belong to Scotland Yard; because you stole it; because you had no right to it; and because you have no official standing in this country. If it had been in Mr. Hale's possession I should not have dared, as you put it, to destroy the sheet, but as this sheet was abstracted from my master's premises by you, an entirely unauthorised person, whom he would have been justified in shooting dead if he had found you housebreaking and you had resisted him on his discovery, I took the liberty of destroying the document. I have always held that these sheets should not have been kept, for, as has been the case, if they fell under the scrutiny of so intelligent a person as Eugène Valmont, improper inferences might have been drawn. Mr. Summertrees, however, persisted in keeping them, but made this concession, that if I ever telegraphed him or telephoned him the word "Encyclopaedia", he would at once burn these records, and he, on his part, was to telegraph or telephone to me "The _Encyclopaedia_ is out of print," whereupon I would know that he had succeeded.