It is unnecessary that we should describe in any great detail the further career of Henry Maudslay. The rest of his life was full of useful and profitable work to others as well as to himself. His business embraced the making of flour and saw mills, mint machinery, and steam-engines of all kinds. Before he left Margaret Street, in 1807, he took out a patent for improvements in the steam-engine, by which he much simplified its parts, and secured greater directness of action. His new engine was called the Pyramidal, because of its form, and was the first move towards what are now called Direct-acting Engines, in which the lateral movement of the piston is communicated by connecting-rods to the rotatory movement of the crank-shaft. Mr. Nasmyth says of it, that "on account of its great simplicity and GET-AT-ABILITY of parts, its compactness and self-contained steadiness, this engine has been the parent of a vast progeny, all more or less marked by the distinguishing features of the original design, which is still in as high favour as ever." Mr. Maudslay also directed his attention in like manner to the improvement of the marine engine, which he made so simple and effective as to become in a great measure the type of its class; and it has held its ground almost unchanged for nearly thirty years. The 'Regent,' which was the first steamboat that plied between London and Margate, was fitted with engines by Maudslay in 1816; and it proved the forerunner of a vast number of marine engines, the manufacture of which soon became one of the most important branches of mechanical engineering.