The narrator then proceeds to give more information about the Martians which was gained by later autopsy. They subsist by injecting the blood of of other creatures directly into their veins. The narrator reasons that they probably targeted humans because humans bore some resemblance to their original prey animal.
The narrator offers three more facts about the Martians: they don't sleep, they don't have gender, and they do not harbor any microorganisms. He also believes that they communicate telepathically. Lastly, the narrator observes that the Martians don't wear clothes, although they do use many varieties of technology. After this observation, he gives up the peephole to the curate.