INTRODUCTION.
T may seem like great exaggeration to say that this is one of the most interesting and profitable books that has been placed upon the American book market for many years. It follows no old rut; it has found a new path, and the reader is permitted to walk in regions which he never saw and of which he never read before. It is indeed a triumph of literary genius to give a picture of intelligent life in other worlds upon a scientific and philosophical basis. Other writers have attempted to give a description of conditions on the Moon, Mars, or some other single planet, but no one has succeeded in picturing the mysteries of life in a number of star worlds with such a fascination as is here found.
Some one may say that the book is only a work of imagination, but we challenge any one to produce a book that gives more timely thrusts at the evils of our present day life. By showing how the people of other worlds have fallen into their sad conditions the author sounds a note of
