division of the classification of earthly creatures, and he points out "the insect type of anatomy had, fortunately for men, never exceeded a relatively very small size on earth." The largest terrestrial insects, living or extinct, do not as a matter of fact measure six inches in length; "but here, against the lesser gravitation of the moon, a creature certainly as much insect as vertebrate seems to have been able to attain to human and ultra-human dimensions."
He does not mention the ant, but throughout his allusions the ant is continually brought before my mind, in its sleepless activity, its intelligence, its social organisation and, more particularly, the fact that it displays, in addition to the two forms, the male and the female, produced by almost all other animals, a great variety of sexless creatures—workers, soldiers, and the like, differing from one another in structure, character, power and use and yet all members of the same species. And these Selenites are of course if only by reason of this widely extended adaptation, incomparably greater than ants. And instead of the four or five different forms of ant that are found there are almost innumerably different forms of Selenite. I have endeavoured to indicate the very considerable difference observable in such Selenites of the outer crust as I happened to encounter; the differences in size, hue, and shape were certainly as wide as the differences between the most widely separated races of men. But such differences as I saw fade absolutely to nothing in comparison with the huge distinctions of which Cavor tells. It would seem the exterior Selenites I saw were, indeed, mostly of one colour and
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