Martian (The War of the Worlds) single suction-cup toe, similar to those on their fingers; other art shows two legs. No description of the alien's internal structure is given; but they are revealed to have blood, and their anemic blood cells are viewed by scientists under a microscope. As in other versions of the story, the Martians succumb to terrestrial bacteria. The aliens appear to have no use for human beings, unlike the original book's Martians who also used them as a blood supply. In the Asylum film "H.G. Wells' War of the Worlds", also known as "Invasion", the Martians resemble a short, green, disc-like head
The War of the Worlds suggests the Martians have left behind. The novel also presents ideas related to Charles Darwin's theory of natural selection, both in specific ideas discussed by the narrator, and themes explored by the story. Wells also wrote an essay titled 'Intelligence on Mars', published in 1896 in the "Saturday Review", which sets out many of the ideas for the Martians and their planet that are used almost unchanged in "The War of the Worlds". In the essay he speculates about the nature of the Martian inhabitants and how their evolutionary progress might compare to humans. He also suggests that Mars, being