Originally published in the early 1930s. The book explains what invention really is, and the extent to which actual creation plays a part in it. It discusses the inventor himself and the intelligence and peculiar qualities which make him an inventor. Contents Include: What is Invention? The Inventor The Practice of Invention Financing Inventions Direction of Inventive Effort Mechanical Invention Electrical Invention Chemical Invention Psychological Invention Transformation of Energy Biological Invention Patent Laws etc. With descriptive illustrations.