A Journey to the Earth's Interior - Or - Have the Poles Really Been Discovered

Mokelumne Hill, California: Health Research, Publishers , 1964. 1964 Health Research facsimile of the 1920 original first edition published at Aurora, Illinois. Dark blue matte wraps with full titles, light shelf wear. Pages near fine; no writing. Black comb-bind, fully intact. Profusely illustrated w/many photo plates. Provocative bibliography for further exploration. Scarce material. Twenty-four chapters cover all aspects of the contemporaneous science, exploration, and theories pertaining to a hollow earth w/openings at the poles. Marshall Gardner, a hollow-earth proponent, presents his scientific hypothesis to explain the formation of hollow planets. Much on artic explorers' logs and records, scientific and anecdotal evidence. This theory also incorporates the concept of a central heat and light source, i.e. a form of sun, held in a centered space by equally applied gravitational force emanating from the midpoint of the earth's spherical crust, e.g. if crust is 800 miles thick then gravitation emanates from apprx. 400 mile depth for both exterior and interior of planet. Dedicated to the continued progress of science and the service that it can render humanity. Twelve pages of finely detailed summary adverts for many intriguing titles available from Health Research publishing. 456 pages. Insured post.. Revised and Enlarged Edition. Comb-bound. Very Good. 8vo - over 7¾" - 9¾" tall. Book.