QUOTE : Several of the inventions and discoveries which have made the modern world possible (the electric telegraph, the breech-loading gun, india-rubber, coal gas, wood-pulp paper) first appeared in Dickens’s lifetime, but he scarcely notes them in his books. Nothing is queerer than the vagueness with which he speaks of Doyce’s “invention” in Little Dorrit. It is represented as something extremely ingenious and revolutionary, “of great importance to his country and his fellow-creatures,” and it is also an important minor link in the book; yet we are never told what the “invention” is!