Sentence:  [...] M. le Coultre, the distinguished astronomer of Geneva, has once more declared that the <WSD>Martians</WSD> are trying to signal to us. [...] How long M. le Coultre's suggestion will stand before it goes the way of other similar conjectures now exploded, no one can say. 
Meaning of the word marked with <WSD> tags:  An inhabitant of the planet Mars.