La Touche smoked two cigars over this problem, and then it occurred to him that the method he had already adopted was sound as far as it went. It merely did not go far enough.
The only way in which he could ensure finding his hypothetical carter would be to send a circular to every employer in Paris. But that was too large an order.
That night, he discussed the matter with the two porters, whom he found intelligent men and keenly interested in the inquiry. He made them describe the kind of cart the cask was brought in, then with a directory he marked off the trades in which the employment of such a vehicle was likely. When he had finished, though some thousands of names were included, he did not think the number overwhelming.
For a considerable time he pondered the question of advertising his circular in the press. At last he decided he could not do so, as if Boirac saw it he would doubtless take precautions to prevent the truth becoming known. La Touche therefore returned to the office of the Business Supplies Company and instructed them to send his circular to each of the thousands of employers in the selected trades, they tabulating the replies and giving him the summary. Though he was by no means sanguine of the success of this move, he felt it offered a chance.
For the next three evenings La Touche and the porters had a busy time. White-haired carters turned up at the Hôtel d’Arles literally in dozens, till the management threatened an ejectment and talked of a claim for fresh carpets. But all was fruitless. The man they wanted did not appear.
On the third day, amongst other letters sent on from the Business Supplies Company, was one which immediately interested La Touche.
‘In reply to your circular letter of the 18th inst.,’ wrote Messrs. Corot, Fils, of the rue de Rivoli, ‘we have a man in our employment who, at the end of March, answered your description. His name is Jean Dubois, of 18b rue de Falaise, near Les Halles. About that time, however, he ceased shaving and has now grown a beard and moustache. We have asked him to call with you.’
Was it, thought La Touche, merely a coincidence that this clean-shaven carter should begin to grow a beard immediately after the delivery of the cask? When two more days passed and the man did not turn up, La Touche determined to call on him.
Accordingly the next evening he arranged for Mallet and one of the porters to deal with the men at the Hôtel d’Arles, while he himself in company with the other set out to find Dubois. The rue de Falaise turned out to be a narrow, dirty street of high, sombre buildings, with the word slum writ large across their grimy frontages. At 18b, La Touche ascended and knocked at a ramshackle door on a dark stone landing. It was opened by a slatternly woman, who stood, silently waiting for him to speak, in the gloom of the threshold. La Touche addressed her with his usual suavity.
‘Good-evening, madame. Is this where M. Jean Dubois of Messrs. Corot, Fils lives?’