This was followed by a detailed account of the work done in and about the installation of a furnace in the house. And in the margin of the book someone had written these words: “See account M.B.”
“Ah! I thought so!” said Sholmes; “the account M.B. is the one I want. I shall learn from it the actual residence of Monsieur Lupin.”
It was morning before he found that important account. It comprised sixteen pages, one of which was a copy of the page on which was described the work done for Mon. Harmingeat of the rue Chalgrin. Another page described the work performed for Mon. Vatinel as owner of the house at No. 25 rue Clapeyron. Another page was reserved for the Baron d’Hautrec, 134 avenue Henri-Martin; another was devoted to the Château de Crozon, and the eleven other pages to various owners of houses in Paris.
Sholmes made a list of those eleven names and addresses; after which he returned the books to their proper places, opened a window, jumped out onto the deserted street and closed the shutters behind him.
When he reached his room at the hotel he lighted his pipe with all the solemnity with which he was wont to characterize that act, and amidst clouds of smoke he studied the deductions that might be drawn from the account of M.B., or rather, from the account of Maxime Bermond alias Arsène Lupin.
At eight o’clock he sent the following message to Ganimard:
“I expect to pass through the rue Pergolese this forenoon and will inform you of a person whose arrest is of the highest importance. In any event, be at home to-night and to-morrow until noon and have at least thirty men at your service.”
Then he engaged an automobile at the stand on the boulevard, choosing one whose chauffeur looked good-natured but dull-witted, and instructed him to drive to the Place Malesherbes, where he stopped him about one hundred feet from Monsieur Destange’s house.
“My boy, close your carriage,” he said to the chauffeur; “turn up the collar of your coat, for the wind is cold, and wait patiently. At the end of an hour and a half, crank up your machine. When I return we will go to the rue Pergolese.”
As he was ascending the steps leading to the door a doubt entered his mind. Was it not a mistake on his part to be spending his time on the affairs of the blonde Lady, while Arsène Lupin was preparing to move? Would he not be better engaged in trying to find the abode of his adversary amongst the eleven houses on his list?