"The Lost Tribes of Venus" by Erik Fennel is a science fiction novel written in the mid-20th century. The story follows Barry Barr, an Earthman who undergoes a transformation after a strange accident while traveling to Venus. As he adapts to the hostile environment of Venus, he becomes embroiled in a conflict involving native tribes and the remnants of human civilization. The opening of the novel introduces a critical moment aboard the spaceship Number Four en route to Venus, where an accident leads to the tragic death of a crew member and the malfunction of ship systems. Barry Barr is thrust into a heroic role when he must repair the ship in a life-threatening scenario against the backdrop of deadly Sigma radiation. After arriving on Venus, he faces not only the perils of the harsh environment but also personal challenges involving his feelings for fellow colonist Dorothy and a growing concern for his transformation into a creature better suited to the alien world. As he grapples with shifting identities and emerging threats, Barry becomes linked with the complex political dynamics of Venus, including the mysterious natives and their enigmatic ways of life. (This is an automatically generated summary.)