Heilmann had for some years been diligently studying the contrivance of a machine for combing long-stapled cotton, the ordinary carding-machine being found ineffective in preparing the raw material for spinning, especially the finer sorts of yarn, besides causing considerable waste. To avoid these imperfections, the cotton-spinners of Alsace offered a prize of 5000 francs for an improved combing-machine, and Heilmann immediately proceeded to compete for the reward. He was not stimulated by the desire of gain, for he was comparatively rich, having acquired a considerable fortune by his wife. It was a saying of his that “one will never accomplish great things who is constantly asking himself, how much gain will this bring me?” What mainly impelled him was the irrepressible instinct of the inventor, who no sooner has a mechanical problem set before him than he feels impelled to undertake its solution. The problem in this case was, however, much more difficult than he had anticipated. The close study of the subject occupied him for several years, and the expenses in which he became involved in connection with it were so great, that his wife’s fortune was shortly swallowed up, and he was reduced to poverty, without being able to bring his machine to perfection. From that time he was under the necessity of relying mainly on the help of his friends to enable him to prosecute the invention. While still struggling with poverty and difficulties, Heilmann’s wife died, believing her husband ruined; and shortly after he proceeded to England and settled for a time at Manchester, still labouring at his machine. He had a model made for him by the eminent machine-makers, Sharpe, Roberts, and Company; but still he could not make it work satisfactorily, and he was at length brought almost to the verge of despair. He returned to France to visit his family, still pursuing his idea, which had obtained complete possession of his mind. While sitting by his hearth one evening, meditating upon the hard fate of inventors and the misfortunes in which their families so often become involved, he found himself almost unconsciously watching his daughters coming their long hair and drawing it out at full length between their fingers. The thought suddenly struck him that if he could successfully imitate in a machine the process of combing out the longest hair and forcing back the short by reversing the action of the comb, it might serve to extricate him from his difficulty. It may be remembered that this incident in the life of Heilmann has been made the subject of a beautiful picture by Mr. Elmore, R.A., which was exhibited at the Royal Academy Exhibition of 1862.