I cannot but regret, now that I am concluding my story, how little I am able to contribute to the discussion of the many debatable questions which are still unsettled. In one respect I shall certainly provoke criticism. My particular province is speculative philosophy. My knowledge of comparative physiology is confined to a book or two, but it seems to me that Carver's suggestions as to the reason of the rapid death of the Martians is so probable as to be regarded almost as a proven conclusion. I have assumed that in the body of my narrative.

At any rate, in all the bodies of the Martians that were examined after the war, no bacteria except those already known as terrestrial species were found. That they did not bury any of their dead, and the reckless slaughter they perpetrated, point also to an entire ignorance of the putrefactive process. But probable as this seems, it is by no means a proven conclusion.

Neither is the composition of the Black Smoke known, which the Martians used with such deadly effect, and the generator of the Heat-Rays remains a puzzle. The terrible disasters at the Ealing and South Kensington laboratories have disinclined analysts for further investigations upon the latter. Spectrum analysis of the black powder points unmistakably to the presence of an unknown element with a brilliant group of three lines in the green, and it is possible that it combines with argon to form a compound which acts at once with deadly effect upon some constituent in the blood. But such unproven speculations will scarcely be of interest to the general reader, to whom this story is addressed. None of the brown scum that drifted down the Thames after the destruction of Shepperton was examined at the time, and now none is forthcoming.

The results of an anatomical examination of the Martians, so far as the prowling dogs had left such an examination possible, I have already given. But everyone is familiar with the magnificent and almost complete specimen in spirits at the Natural History Museum, and the countless drawings that have been made from it; and beyond that the interest of their physiology and structure is purely scientific.

A question of graver and universal interest is the possibility of another attack from the Martians. I do not think that nearly enough attention is being given to this aspect of the matter. At present the planet Mars is in conjunction, but with every return to opposition I, for one, anticipate a renewal of their adventure. In any case, we should be prepared. It seems to me that it should be possible to define the position of the gun from which the shots are discharged, to keep a sustained watch upon this part of the planet, and to anticipate the arrival of the next attack.

In that case the cylinder might be destroyed with dynamite or artillery before it was sufficiently cool for the Martians to emerge, or they might be butchered by means of guns so soon as the screw opened. It seems to me that they have lost a vast advantage in the failure of their first surprise. Possibly they see it in the same light.

Lessing has advanced excellent reasons for supposing that the Martians have actually succeeded in effecting a landing on the planet Venus. Seven months ago now, Venus and Mars were in alignment with the sun; that is to say, Mars was in opposition from the point of view of an observer on Venus. Subsequently a peculiar luminous and sinuous marking appeared on the unillumined half of the inner planet, and almost simultaneously a faint dark mark of a similar sinuous character was detected upon a photograph of the Martian disk. One needs to see the drawings of these appearances in order to appreciate fully their remarkable resemblance in character.

At any rate, whether we expect another invasion or not, our views of the human future must be greatly............