“My good friend,” he said, “the whole trade of Angoulême is in crown paper. We must make the best possible crown paper at half the present price; that is the first and foremost question for us.” Then David tried to size the pulp for the desired paper, and the result was a harsh surface with grains of size distributed all over it. On the day when the experiment was concluded and David held the sheets in his hand, he went away to find a spot where he could be alone and swallow his bitter disappointment. But Boniface Cointet went in search of him and comforted him. Boniface was delightfully amiable. “Do not lose heart,” he said; “go on! I am a good fellow, I understand you; I will stand by you to the end.” “Really,” David said to his wife at dinner, “we are with good people; I should not have expected that the tall Cointet would be so generous.” And he repeated his conversation with his wily partner. Three months were spent in experiments. David slept at the mill; he noted the effects of various preparations upon the pulp. At one time he attributed his non-success to an admixture of rag-pulp with his own ingredients, and made a batch entirely composed of the new material; at another, he endeavored to size pulp made exclusively from rags; persevering in his experiments under the eyes of the tall Cointet, whom he had ceased to mistrust, until he had tried every possible combination of pulp and size. David lived in the paper-mill for the first six months of 1823--if it can be called living, to leave food untasted, and go in neglect of person and dress. He wrestled so desperately with the difficulties, that anybody but the Cointets would have seen the sublimity of the struggle, for the brave fellow was not thinking of his own interests. The moment had come when he cared for nothing but the victory. With marvelous sagacity he watched the unaccountable freaks of the semi-artificial substances called into existence by man for ends of his own; substances in which nature had been tamed, as it were, and her tacit resistance overcome; and from these observations drew great conclusions; finding, as he did, that such creations can only be obtained by following the laws of the more remote affinities of things, of “a second nature,” as he called it, in substances. Towards the end of August he succeeded to some extent in sizing the paper pulp in the vat; the result being a kind of paper identical with a make in use for printers’ proofs at the present day--a kind of paper that cannot be depended upon, for the sizing itself is not always certain. This was a great result, considering the condition of the paper trade in 1823, and David hoped to solve the final difficulties of the problem, but--it had cost ten thousand francs.