While the waters of Venice and the ruins of Rome were sunning themselves for the pleasure of the Dorrit family, and were daily being sketched out of all earthly proportion, lineament, and likeness, by travelling pencils innumerable, the firm of Doyce and Clennam hammered away in Bleeding Heart Yard, and the vigorous clink of iron upon iron was heard there through the working hours.

The younger partner had, by this time, brought the business into sound trim; and the elder, left free to follow his own ingenious devices, had done much to enhance the character of the factory. As an ingenious man, he had necessarily to encounter every discouragement that the ruling powers for a length of time had been able by any means to put in the way of this class of culprits; but that was only reasonable self-defence in the powers, since How to do it must obviously be regarded as the natural and mortal enemy of How not to do it. In this was to be found the basis of the wise system, by tooth and nail upheld by the Circumlocution Office, of warning every ingenious British subject to be ingenious at his peril: of harassing him, obstructing him, inviting robbers (by making his remedy uncertain, and expensive) to plunder him, and at the best of confiscating his property after a short term of enjoyment, as though invention were on a par with felony. The system had uniformly found great favour with the Barnacles, and that was only reasonable, too; for one who worthily invents must be in earnest, and the Barnacles abhorred and dreaded nothing half so much. That again was very reasonable; since in a country suffering under the affliction of a great amount of earnestness, there might, in an exceeding short space of time, be not a single Barnacle left sticking to a post.

Daniel Doyce faced his condition with its pains and penalties attached to it, and soberly worked on for the work's sake. Clennam cheering him with a hearty co-operation, was a moral support to him, besides doing good service in his business relation. The concern prospered, and the partners were fast friends.

But Daniel could not forget the old design of so many years. It was not in reason to be expected that he should; if he could have lightly forgotten it, he could never have conceived it, or had the patience and perseverance to work it out. So Clennam thought, when he sometimes observed him of an evening looking over the models and drawings, and consoling himself by muttering with a sigh as he put them away again, that the thing was as true as it ever was.