These inventions were surely enough for one man to have accomplished; but we have not yet done. The mere enumeration of his other inventions would occupy several pages. We shall merely allude to a few of them. One was his Turret Clock, for which he obtained the medal at the Great Exhibition of 1851. Another was his Prize Electro-Magnet of 1845. When this subject was first mentioned to him, he said he did not know anything of the theory or practice of electro-magnetism, but he would try and find out. The result of his trying was that he won the prize for the most powerful electro-magnet: one is placed in the museum at Peel Park, Manchester, and another with the Scottish Society of Arts, Edinburgh. In 1846 he perfected an American invention for making cigars by machinery; enabling a boy, working one of his cigar-engines, to make as many as 5000 in a day. In 1852 he patented improvements in the construction, propelling, and equipment of steamships, which have, we believe, been adopted to a certain extent by the Admiralty; and a few years later, in 1855, we find him presenting the Secretary of War with plans of elongated rifle projectiles to be used in smooth-bore ordnance with a view to utilize the old-pattern gun. His head, like many inventors of the time, being full of the mechanics of war, he went so far as to wait upon Louis Napoleon, and laid before him a plan by which Sebastopol was to be blown down. In short, upon whatever subject he turned his mind, he left the impress of his inventive faculty. If it was imperfect, he improved it; if incapable of improvement, and impracticable, he invented something entirely new, superseding it altogether. But with all his inventive genius, in the exercise of which Mr. Roberts has so largely added to the productive power of the country, we regret to say that he is not gifted with the commercial faculty. He has helped others in their difficulties, but forgotten himself. Many have profited by his inventions, without even acknowledging the obligations which they owed to him. They have used his brains and copied his tools, and the "sucked orange" is all but forgotten. There may have been a want of worldly wisdom on his part, but it is lamentable to think that one of the most prolific and useful inventors of his time should in his old age be left to fight with poverty.