New York: Hodder and Stoughton, 1913. First Edition. First Printing. Octavo (19.5cm); red cloth covered boards titled in gilt on the cover and spine; 252pp; illustrated by Harry Rountree, with all 16 plates present; several small mild spots of dampstain to the front cover; front hinge lightly pulled at frontis; former owner's name erased from inside front cover; Very Good+, lacking the dustjacket.
"Being an Account of Another Amazing Adventure of Professor Challenger" (from the title page). "The Earth faces disaster as a result of atmospheric poisoning." CLUTE & NICHOLLS, p.352; BLEILER, p.63; REGINALD, 04502.