The Coral Island the civilising effect of Christianity, 19th-century British imperialism in the South Pacific, and the importance of hierarchy and leadership. It was the inspiration for William Golding's dystopian novel "Lord of the Flies" (1954), which inverted the morality of "The Coral Island"; in Ballantyne's story the children encounter evil, but in "Lord of the Flies" evil is within them. In the early 20th century, the novel was considered a classic for primary school children in the UK, and in the United States it was a staple of high-school suggested reading lists. Modern critics consider the book's worldview to be dated and
Tarzan, Lord of the Jungle (novel) from a "forbidden valley" hidden in the mountains. His lion ally Jad-bal-ja puts in an appearance late in the book. "Tarzan, Lord of the Jungle" marks an important transition in the plot-type presented in the Tarzan series, presaged by the earlier "Tarzan the Untamed". Previous novels dealt primarily with the ape-man's own affairs and family; beginning with this novel, he becomes an apparently rootless adventurer serving as a savior and enabler of a cast of secondary characters which changes in each book. While a few previously established and new characters continue to appear, notably the lion Jad-bal-Ja, the monkey Nkima,