Note 5 — Front matter (continued 2)

A corollary to advancement in culture seems to be increase in various sensitivities, both mental and physical. Thus, as humans are more delicately evolved than their arboreal ancestors, they are correspondingly more prone to the ailments which accompany such evolution: deafness, blindness, loss of the sense of smell, etc.

Similarly, the higher classes of Daans might be expected to have become more highly pigmented than their amphibious predecessors. Physical coloration would be a refinement of physique to a race which, under the cloud-blanketed skies of Venus, would in its elemental stages show no reaction to diffuse actinic rays.—Ed.