No science has ever equaled astronomy in its appeal to the imagination, and recently popular interest in the wonders of the starry heavens has been stimulated by surprising discoveries and imaginary discoveries, as well as by a marked tendency of writers of fiction to include other worlds and their possible inhabitants within the field of romance.

Mr. Serviss's new book on "Other Worlds, their Nature and Possibilities in the Light of the Latest Discoveries," summarizes what is known. With helpful illustrations, the most interesting facts about the planets Venus, Mars, Jupiter, Saturn, etc., as well as about the nearest of all other worlds, the moon, are presented in a popular manner, and always from the point of view of human interest—a point that is too seldom taken by writers on science.

"By its aid thousands of people who have resigned themselves to the ignorance in which they were left at school, by our wretched system of teaching by the book only, will thank Mr. Serviss for the suggestions he has so well carried out."—New York Times.

"The volume will be found interesting by those for whom it is written, and will inspire many with a love for the study of astronomy, one of the most far-reaching of the sciences."—Milwaukee Journal.