The Son of Tarzan. by Edgar Rice Burroughs

Following the events in The Beasts of Tarzan, Tarzan and his wife, Jane, return to England to raise their infant son, Jack. Now, ten years later, Jane has refused to allow Tarzan to share his past in the jungles with their son for fear of awakening a desire in him to follow in his father's footsteps. Unfortunately, Jack is already feeling drawn to Africa, and when one of Tarzan's old friends surfaces, Jack is quick to set out on his own adventure.
The Son of Tarzan was originally published as a serial in All-Story Weekly between December 4, 1915 and January 8, 1916. It's the fourth book in the Tarzan series, and is only entry without Tarzan as the main character. Since its initial publication, the book has been adapted to both film and comics.