Tarzan and the Jewels of Opar
written by Edgar Rice Burroughs
part of Tarzan

Tarzan and the Tarzan Twins is a Tarzan novel written by Edgar Rice Burroughs written for younger readers. It was originally published in two segments, The Tarzan Twins in 1927, and Tarzan and the Tarzan Twins, with Jad-Bal-Ja, the Golden Lion in 1936. These were brought together in 1963 under the title of Tarzan and the Tarzan Twins in the first complete edition. While the book falls chronologically between Tarzan, Lord of the Jungle and Tarzan and the Lost Empire, and introduces a family that figures prominently in the latter novel, its juvenile status has led to its customary omission from listings of the Tarzan series. Thus Tarzan and the Lost Empire is generally considered the twelfth Tarzan book rather than Tarzan and the Tarzan Twins.

Tarzan of the Apes is a novel written by Edgar Rice Burroughs, the first in a series of books about the title character Tarzan. It was first published in the pulp magazine All-Story Magazine in October, 1912; the first book edition was published in 1914. So popular was the character that Burroughs continued the series into the 1940s with two dozen sequels. The novel tells the story of John Clayton, born in the western coastal jungles of equatorial Africa to a marooned couple from England, John and Alice Clayton, Lord and Lady Greystoke. Adopted as an infant by the she-ape Kala after his parents died, Clayton is named "Tarzan" and raised in ignorance of his human heritage. Feeling alienated from his peers due to their physical differences, he discovers his true parents' cabin, where he first learns of others like himself in their books, with which he eventually teaches himself to read. On his return from one visit to the cabin, he is attacked by a huge gorilla which he manages to kill with his father's knife, although he is terribly wounded in the struggle. As he grows up, Tarzan becomes a skilled hunter, exciting the jealousy of Kerchak, the ape leader, who finally attacks him. Tarzan kills Kerchak and takes his place as "king" of the apes. Later, a tribe of black Africans settles in the area, and Kala is killed by one of its hunters. Avenging himself on the killer, Tarzan begins an antagonistic relationship with the tribe, raiding its village for weapons and practicing cruel pranks on them. They, in turn, regard him as an evil spirit and attempt to placate him. Subsequently, a new party of whites is marooned on the coast, including Jane Porter, the first white woman Tarzan has ever seen. Tarzan's cousin, William Cecil Clayton, unwitting usurper of the ape man's ancestral English estate, is also among the party. Tarzan spies on the newcomers, aids them in secret, and saves Jane from the perils of the jungle. Absent when they are rescued, he is introduced further into the mysteries of civilization by French Naval Officer Paul D'Arnot, whom he saves from the natives. D'Arnot teaches Tarzan French and how to behave among white men, as well as serving as his guide to the nearest colonial outposts. Ultimately, Tarzan travels to Jane's native Baltimore, Maryland only to find that she is now in the woods of Wisconsin. Tarzan finally meets Jane in Wisconsin where they renew their acquaintance and he learns the bitter news that she has become engaged to William Clayton. Meanwhile, clues from his parents' cabin have enabled D'Arnot to prove Tarzan's true identity. Instead of claiming his inheritance, Tarzan chooses rather to conceal and renounce his heritage for the sake of Jane's happiness.

The novel picks up where Tarzan of the Apes left off. The ape man, feeling rootless in the wake of his noble sacrifice of his prospects of wedding Jane Porter, leaves America for Europe to visit his friend Paul d'Arnot. On the ship he becomes embroiled in the affairs of Countess Olga de Coude, her husband, Count Raoul de Coude, and two shady characters attempting to prey on them, Nikolas Rokoff and his henchman Alexis Paulvitch. Rokoff, it turns out, is also the countess's brother. Tarzan thwarts the villains' scheme, making them his deadly enemies. Later, in France, Rockoff tries time and again to eliminate the ape man, finally engineering a duel between him and the count by making it appear that he is the countess's lover. Tarzan deliberately refuses to defend himself in the duel, even offering the count his own weapon after the latter fails to kill him with his own, a grand gesture that convinces his antagonist of his innocence. In return, Count Raoul finds him a job as a special agent in Algeria for the ministry of war. A sequence of adventures among the local Arabs ensues, including another brush with Rokoff. Afterward Tarzan sails for Cape Town and strikes up a shipboard acquaintance with Hazel Strong, a friend of Jane's. But Rokoff and Paulovitch are also aboard, and manage to ambush him and throw him overboard. Miraculously, Tarzan manages to swim to shore, and finds himself in the coastal jungle where he was brought up by the apes. He soon rescues and befriends a native warrior, Busuli of the Waziri, and is adopted into the Waziri tribe. After defeating a raid on their village by ivory raiders he becomes their chief. The Waziri know of a lost city deep in the jungle, from which they have obtained their golden ornaments. Tarzan has them take him there, but is captured by its inhabitants, a race of beast-like men, and condemned to be sacrificed to their sun god. To his surprise, the priestess to perform the sacrifice is a beautiful woman, who speaks the ape language he learned as a child. She tells him she is La, high priestess of the lost city of Opar. When the ceremony is fortuitously interrupted, she hides him and promises to lead him to freedom. But the ape man escapes on his own, locates the treasure chamber, and manages to rejoin the Waziri.

Not long after Tarzan claims his hereditary title of Lord Greystoke and marries Jane, their infant son, Jack, is kidnapped in London by his old Russian enemies, Nikolas Rokoff and Alexis Paulvitch. Following an anonymous call about the whereabouts of Jack, Tarzan himself falls into Rokoff's trap and is imprisoned aboard a ship carrying Jack. Jane, fearing Tarzan was entering a trap, follows him and also finds herself in Rokoff's clutches aboard the boat. Rokoff sets sail to Africa, eventually exiling Tarzan on an island near the African coast and telling Tarzan that Jack will be left with a cannibal tribe and raised as one of their own. Using his jungle skill and primal intelligence, Tarzan wins the help of Sheeta, the vicious panther, a tribe of great apes led by the intelligent Akut, and the native warrior Mugambi. With their aid, Tarzan reaches the mainland, kills Rokoff, and tracks down his wife and son. Paulvitch, the other villain, is presumed dead, but manages to escape into the jungle.

Alexis Paulvitch, a henchman of Tarzan's now-deceased enemy, Nikolas Rokoff, survived his encounter with the ape-man in The Beasts of Tarzan and wants to even the score. Paulvitch lures Jack, Tarzan's son, away from London and into his clutches, but Jack escapes with the help of the ape named Akut. Akut & Jack flee into the deep African jungle where two decades earlier Tarzan himself had been raised. The young Jack Clayton, now on his own, becomes known as Korak the killer and builds a reputation for himself in the Jungle. Korak, like his father before him, finds his own place in the Jungle among the great apes, and also like his father, meets and rescues a beautiful young woman, Meriem. Meriem is the daughter of a Captain in the French Foreign Legion, who was also a Prince (Prince de Cadrenet), named Armand Jacot.

In the previous novel Tarzan and Jane's son, Jack Clayton, a.k.a. Korak, had come into his own. In this novel Tarzan returns to Opar, the source of the gold where a lost colony of fabled Atlantis is located. However, while Atlantis itself sank beneath the waves thousands of years ago, the workers of Opar have continued to mine all of the gold, which means there is a rather huge stockpile. Tarzan follows a greedy Belgian and an Arab into the jungle, where this criminal pair manages to stumble upon this lost city. John Clayton loses his memory as an after effect of a fight, and La, the high priestess who was the servant of the Flaming god of Opar, and who is also very beautiful, takes advantage of his amnesia. She had fallen in lust with the ape man during their first encounter. But while his amnesia opens the door for La's lustful advances, her high priests are not going to allow Tarzan to escape their sacrificial knives this time. In the meanwhile, Jane is in trouble and wonders what is keeping her husband from once again coming to her rescue.

Jungle Tales of Tarzan is a collection of twelve loosely-connected short stories written by Edgar Rice Burroughs, comprising the sixth book in order of publication in his series about the title character Tarzan. Chronologically, the events recounted in it actually occur between chapters 12 and 13 of the first Tarzan novel, Tarzan of the Apes. The contents of The Jungle Tales of Tarzan include: "Tarzan's First Love" "The Capture of Tarzan" "The Fight for the Balu" "The God of Tarzan" "Tarzan and the Black Boy" "The Witch-Doctor Seeks Vengeance" "The End of Bukawai" "The Lion" "The Nightmare" "The Battle for Teeka" "A Jungle Joke" "Tarzan Rescues the Moon"

The action is set during World War I. While John Clayton, Lord Greystoke (Tarzan) is away from his plantation home in British East Africa, it is destroyed by invading German troops from Tanganyika. On his return he discovers among many burned bodies one that appears to be the corpse of his wife, Jane Porter Clayton. Maddened, the ape-man seeks revenge not only on the perpetrators of the tragedy but all Germans, and sets out for the battle front of the war in east Africa. On the way he has a run-in with a lion (or Numa, as it is called by the apes among whom Tarzan was raised), which he traps in a gulch by blocking the entrance. At the front he infiltrates the German headquarters and seizes Major Schneider, the officer he believes led the raid on his estate. Returning to the gulch, he throws his captive to the lion. Tarzan goes on to help the British in the battle in various ways, including setting the lion loose in the enemy trenches, and kills von Goss, another German officer involved in the attack on the Greystoke estate. He then becomes embroiled in the affairs of Bertha Kircher, a woman he has seen in both the German and British camps, and believes to be a German spy, particularly after he learns she possesses his mother's locket, which he had given as a gift to Jane. His efforts to retrieve it lead him to a rendezvous between Kircher and Captain Fritz Schneider, brother of the major Tarzan threw to the lion previously, and the actual commander of the force that burned the estate. Killing Schneider, Tarzan believes his vengeance complete. Abandoning his vendetta against the Germans he departs for the jungle, swearing off all company with mankind. Seeking a band of Mangani, the apes among whom he had been raised, Tarzan crosses a desert, undergoing great privations. Indeed, the desert is almost his undoing. He only survives by feigning death to lure a vulture (Ska in the ape language) following him into his reach; he then catches and devours the vulture, which gives him the strength to go on. The scene is a powerful one, a highlight both of the novel and of the Tarzan series as a whole. On the other side of the desert Tarzan locates the ape band. While with them he once again encounters Bertha Kircher, who has just escaped from Sergeant Usanga, leader a troop of native deserters from the German army, by whom she had been taken captive. Despite his suspicion of Bertha, Tarzan's natural chivalry leads him to grant her shelter and protection among the apes. Later he himself falls captive to the tribe of cannibals the deserters have sheltered among, along with Harold Percy Smith-Oldwick, a British aviator who has been forced down in the jungle. Learning of Tarzan's plight, Bertha heroically leads the apes against the natives and frees them both. Smith-Oldwick becomes infatuated with Bertha, and they search for his downed plane. They find it, but are captured again by Usanga, who attempts to fly off in it with Bertha. Tarzan arrives in time to board the plane as it takes off and throw Usanga from the plane. Smith-Oldwick and Bertha Kircher then try to pilot it back across the desert to civilization, but fail to make it. Seeing the plane go down, Tarzan once more sets out to rescue them. On the way he encounters another Numa, this one an unusual black lion caught in a pit trap, and frees it. He, the two lovers and the lion are soon reunited, but attacked by warriors from the lost city of Xuja, hidden in a secret desert valley. Tarzan is left for dead and Bertha and Smith-Oldwick taken prisoner. The Xujans are masters of the local lions and worshippers of parrots and monkeys. They are also completely insane as a consequence of long inbreeding. Recovering, Tarzan once more comes to the rescue of his companions, aided by the lion he had saved earlier. But the Xujans pursue them and they turn at bay to make one last stand. The day is saved by a search party from Smith-Oldwick's unit, who turn the tide. Afterward, Tarzan and Smith-Old

In the previous novel, during the early days of World War I, Tarzan discovered that his wife Jane was not killed in a fire set by German troops, but was in fact alive. In this novel two months have gone by and Tarzan is continuing to search for Jane. He has tracked her to a hidden valley called Pal-ul-don, which means "Land of Men." In Pal-ul-don Tarzan finds a real Jurassic Park filled with dinosaurs, notably the savage Triceratops-like Gryfs, which unlike their prehistoric counterparts are carnivorous. The lost valley is also home to two different races of tailed human-looking creatures, the Ho-don (hairless and white skinned) and the Waz-don (hairy and black-skinned). Tarzan befriends Ta-son, a Ho-don warrior, and Om-at, the Waz-don chief of the tribe of Kor-ul-ja. In this new world he becomes a captive but so impresses his captors with his accomplishments and skills that they name him Tarzan-Jad-Guru (Tarzan the Terrible), which is the name of the novel. Jane is also being held captive in Pal-ul-don, having been brought there by her German captor, who has since become dependent on her due to his own lack of jungle survival skills. She becomes a pawn in a religious power struggle that consumes much of the novel. With the aid of his native allies, Tarzan continues to pursue his beloved to rescue her and set things to right, going through an extended series of fights and escapes to do so. In the end success seems beyond even his ability to achieve, until in the final chapter he and Jane are saved by their son Korak, who has been searching for Tarzan just as Tarzan has been searching for Jane.

Tarzan and the Golden Lion is the ninth book in Edgar Rice Burroughs' series of novels about the jungle hero Tarzan. In the previous novel, Tarzan rescued Jane after he discovered that she was alive, and was reunited with his son Korak. In this story, Tarzan has been drugged and delivered to the priest of Opar, the lost colony of Atlantis that Clayton had last visited in Tarzan and the Jewels of Opar. Once again the High Priestess of the Flaming God, La, who is consumed by her hopeless lust for Tarzan, rescues him. But when her people discover that she had betrayed them, Tarzan flees with La into the legendary Valley of Diamonds, where savage gorillas rule. The good news is that Tarzan and La were being followed by Jad-bal-ja, his faithful golden lion whom he had raised from a cub. The bad news is that they are also being followed by Estaban Miranda, who happens to look exactly like Clayton, but who is evil.

Tarzan and the Ant Men is the tenth book in Edgar Rice Burroughs' series of novels about the jungle hero Tarzan. Tarzan, the king of the jungle, enters an isolated country called Minuni, inhabited by a people four times smaller than himself. The Minunians live in magnificent city-states which frequently wage war against each other. Tarzan befriends the king, Adendrohahkis, and the prince, Komodoflorensal, of one such city-state, called Trohanadalmakus, and joins them in war against the onslaught of the army of Veltopismakus, their warlike neighbours. Tarzan is captured on the battle-ground and taken prisoner by the Veltopismakusians. The Veltopismakusian scientist Zoanthrohago conducts an experiment reducing Tarzan to the size of a Minunian, and the ape-man is imprisoned and enslaved among other Trohanadalmakusian prisoners of war. He meets, though, Komodoflorensal in the dungeons of Veltopismakus, and together they are able to make a daring escape.

Tarzan and a young German find a lost remnant of the Roman empire hidden in the mountains of Africa. This novel is notable for the introduction of Nkima, who serves as Tarzan's monkey companion in it and a number of later Tarzan stories.

Tarzan at the Earth's Core is the thirteenth novel in Edgar Rice Burroughs' Tarzan series. In response to a radio plea from Abner Perry, a scientist who with his friend David Innes has discovered the interior world of Pellucidar at the Earth's core, Jason Gridley launches an expedition to rescue Innes from the Korsars (corsairs), the scourge of the internal seas. He enlists Tarzan, and a fabulous airship is constructed to penetrate Pellucidar via the natural polar opening connecting the outer and inner worlds. In Pellucidar Tarzan and Gridley are each separated from the main force of the expedition and must struggle for survival against the prehistoric creatures and peoples of the inner world. Gridley wins the love of the native cave-woman Jana, the Red Flower of Zoram. Eventually everyone is reunited, and the party succeeds in rescuing Innes. As Tarzan and the others prepare to return home, Gridley decides to stay to search for Frederich Wilhelm Eric von Mendeldorf und von Horst, one last member of the expedition who remains lost (The missing Von Horst's adventures are told in a sequel, Back to the Stone Age, which in the event does not involve either Gridley or Tarzan).

Tarzan and his monkey friend, Nkima, prevent Russian communists from looting the lost city of Opar.

Tarzan faces Soviet agents seeking revenge and a bizarre religious cult.

After encountering and befriending Valthor, a warrior of the lost city of Athne (whom he rescues from a group of bandits known as shiftas), the City of Ivory and capital of the land of Thenar, Tarzan is captured by the insane yet beautiful queen Nemone of its hereditary enemy, Cathne, the City of Gold, capital of the land of Onthar. This novel is perhaps best known for two scenes; in the first, Tarzan is forced to fight Cathne's strongest man in its arena. While an ordinary man might have been in trouble, Tarzan easily overpowers his antagonist. The second scene, in which Tarzan is forced to fight a lion, starts with the ape man being forced to run away from a hunting lion, Belthar, which will hunt him down and kill him. Tarzan at first believes he can outrun the beast (lions tire after the first 100 yards at top speed). This lion, however, is of a breed specifically selected for endurance, and ultimately Tarzan must turn to face him, though aware that without a knife he can do little but delay the inevitable. Fortunately his own lion ally, Jad-Bal-Ja, whom he had raised from a cub, arrives and intervenes, killing Belthar and saving Tarzan. Nemone, who believes her life is linked to that of her pet, kills herself when it dies.

Tarzan discovers a mad scientist with a city of talking gorillas. To create additional havoc, a Hollywood film crew sets out to shoot a Tarzan movie in Africa and brings along an actor who is an exact double of the apeman himself, but is his opposite in courage and determination.

An amnesiac Tarzan and his monkey companion N'kima are taken by an African warrior to be his guardian spirits, and as such come into conflict with the murderous secret society of the Leopard Men.

Tarzan encounters a lost race with uncanny mental powers, after which he revisits the lost cities of Cathne and Athne, previously encountered in the earlier novel Tarzan and the City of Gold.

While serving in the R.A.F. under his civilian name of John Clayton during World War II, Tarzan is shot down over the island of Sumatra in the Japanese-occupied Dutch East Indies. He uses his jungle survival skills to save his comrades in arms, and fight the Japanese while seeking escape from enemy territory.

Tarzan tracks down yet another impostor resembling him, who is under the delusion he is Tarzan.

In addition to the title story, a short novel, it includes two Tarzan short stories. The three stories included in this novel are: "Tarzan and the Castaways" "Tarzan and the Champion" "Tarzan and the Jungle Murders" In the title story, Tarzan is stranded on a Pacific island inhabited by the remnant of a lost Mayan civilization. In the second he confronts an American prize fighter who has come to Africa to hunt the wildlife, while in the third he applies his jungle lore to solving a mystery.

Tarzan: the Lost Adventure is a novel written by Joe R. Lansdale based on an incomplete fragment of a Tarzan novel written by Edgar Rice Burroughs but left unfinished at his death. In Burroughs' last Tarzan story, left unfinished at the time of his death, the ape man plays guardian to an expedition seeking the lost city of Ur. In Lansdale's completed novel, Ur is a society revering a giant and supposedly immortal praying mantis, which is used to slay condemned prisoners in the arena. Tarzan speculates that the creature is originally from the underground world of Pellucidar, to which Ur is connected by a system of caverns and passages. Trapped underground at the end of the story, he seeks escape by seeking out the route to Pellucidar himself.