all the fevers and contagions of human life

The last salient point in which the systems of these creatures differed from ours was in what one might have thought a very trivial particular. Micro-organisms, which cause so much disease and pain on earth, have either never appeared upon Mars or Martian sanitary science eliminated them ages ago. A hundred diseases, all the fevers and contagions of human life, consumption, cancers, tumours and such morbidities, never enter the scheme of their life. And speaking of the differences between the life on Mars and terrestrial life, I may allude here to the curious suggestions of the red weed. Apparently the vegetable kingdom in Mars, instead of having green for a dominant colour, is of a vivid blood-red tint. At any rate, the seeds which the Martians (intentionally or accidentally) brought with them gave rise in all cases to red-coloured growths. Only that known popularly as the red weed, however, gained any footing in competition with terrestrial forms. The red creeper was quite a transitory growth, and few people have seen it growing. For a time, however, the red weed grew with astonishing vigour and luxuriance. It spread up the sides of the pit by the third or fourth day of our imprisonment, and its cactus-like branches formed a carmine fringe to the edges of our triangular window. And afterwards I found it broadcast throughout the country, and especially wherever there was a stream of water. The Martians had what appears to have been an auditory organ, a single round drum at the back of the head-body, and eyes with a visual range not very different from ours except that, according to Philips, blue and violet were as black to them. It is commonly supposed that they communicated by sounds and tentacular gesticulations; this is asserted, for instance, in the able but hastily compiled pamphlet (written evidently by someone not an eye-witness of Martian actions) to which I have already alluded, and which, so far, has been the chief source of information concerning them.