The Ape-People and Their Captives
Last and First MenThis flow follows the Second Men’s encounter with the African Tree-Dwelling Apes, the apes’ exploitation of Sub-men, and the epidemic that destroys a human civilization.
increasing
Bearing strength in each event
decreasing
A New Intelligence in the Forest

The Tree-Dwelling Society
Unexpected resistance
Second Men explorers encounter armed apes who organize an effective defense. Their tools and coordination reveal a terrestrial intelligence competing with humanity in practical cleverness.
A divided forest
The apes control groups of Sub-men and resist human entry. The explorers must revise their assumptions about which species can organize, dominate, and defend a territory.
Captivity and Cruelty

The Apes’ Herds
Exploited Sub-men
The apes use Sub-men as laborers and food, maintaining control through intimidation and disease. Their victims’ suffering is treated as an amusing display of superiority.
Human protest
The Second Men object to the abuse, but the apes cannot understand the protest as an ethical claim. Their narrow empathy makes them kind to their own while indifferent to other beings.
Metal as a Sacred Prize

A Symbol Misread
Hoarding without use
The apes become fascinated by metal supplied in trade and treat ingots as signs of rank. They accumulate the material without understanding the human purposes it serves.
Rising antagonism
A desire to monopolize the metal combines with resentment of the explorers. The apes’ social customs turn a useful resource into a focus of jealousy and hostility.
The Infected Nuts

A Deliberate Biological Attack
A hidden vulnerability
The apes recognize that the Second Men are susceptible to diseases affecting the Sub-men. They infect valuable nuts with pathogens and send them into human territory through trade.
Civilizational ruin
The disease spreads beyond the expedition and kills many Second Men. Their settlements collapse, showing how a seemingly small act can exploit a biological weakness on a continental scale.
The End of Ape Rule

A Delayed Reversal
Humanity recovers
The Second Men gradually recover from the epidemic and resume cultural development. When they return to Africa, the apes’ former society has disappeared.
The captives rebel
The Sub-men eventually turn on their masters, who have burdened themselves with metal and obsession. The episode closes with domination undone by the beings it treated as property.
During the Second Men’s first African expedition
During the first years of contact
After the explorers begin trading with the apes
When the Second Men resume their African expedition
After the Second Men return to Africa