Readers who have had the patience to follow the facts accumulated in this book, especially those who have given them thoughtful attention, will probably feel convinced of the immense powers over the productive forces of Nature that man has acquired within the last half a century. Comparing the achievements indicated in this book with the present state of production, some will, I hope, also ask themselves the question which will be ere long, let us hope, the main object of a scientific political economy: Are the means now in use for satisfying human needs, under the present system of permanent division of functions and production for profits, really economical? Do they really lead to economy in the expenditure of human forces ? Or, are they not mere wasteful survivals from a past that wads plunged into darkness, ignorance and oppression, and never took into consideration the economical and social value of the human being? In the domain of agriculture it may...