The firm of Robert Stephenson and Co. having contracted to build for the Government three large iron caissons for the Keyham Docks, and as these were very similar in construction to that of an ordinary iron ship, draughtsmen conversant with that class of work were specially engaged to superintend it. The manager, knowing my fondness for ships, placed me as his assistant at this new work. After I had mastered it, I endeavoured to introduce improvements, having observed certain defects in laying down the lines--I mean by the use of graduated curves cut out of thin wood. In lieu of this method, I contrived thin tapered laths of lancewood, and weights of a particular form, with steel claws and knife edges attached, so as to hold the lath tightly down to the paper, yet capable of being readily adjusted, so as to produce any form of curve, along which the pen could freely and continuously travel. This method proved very efficient, and it has since come into general use. The Messrs. Stephenson were then also making marine engines, as well as large condensing pumping engines, and a large tubular bridge to be erected over the river Don. The splendid high-level bridge over the Tyne, of which Robert Stephenson was the engineer, was also in course of construction. With the opportunity of seeing these great works in progress, and of visiting, during my holidays and long evenings, most of the manufactories and mines in the neighbourhood of Newcastle, I could not fail to pick up considerable knowledge, and an acquaintance with a vast variety of trades. There were about thirty other pupils in the works at the same time with myself; some were there either through favour or idle fancy; but comparatively few gave their full attention to the work, and I have since heard nothing of them. Indeed, unless a young fellow takes a real interest in his work, and has a genuine love for it, the greatest advantages will prove of no avail whatever. It was a good plan adopted at the works, to require the pupils to keep the same hours as the rest of the men, and, though they paid a premium on entering, to give them the same rate of wages as the rest of the lads. Mr. William Hutchinson, a contemporary of George Stephenson, was the managing partner. He was a person of great experience, and had the most thorough knowledge of men and materials, knowing well how to handle both to the best advantage. His son-in-law, Mr. William Weallans, was the head draughtsman, and very proficient, not only in quickness but in accuracy and finish. I found it of great advantage to have the benefit of the example and the training of these very clever men.