Smith stepped back, pondering. The doctor looked to the geologist to take his place, but Van Emmon made way for Billie. At any other time she would have resented his "woman-first" attitude; now she quickly found voice.

"How are you able to get along without aisles? It may seem a foolish question, to you; but on earth we would consider a hall without aisles about as convenient as a room without a door."

Immediately a Venusian directly in front of her, and on a level with her eyes, called out: "Watch me, madam." And quite without an effort beyond touching a button or two, the fellow rose straight into the air, glass and all, and then floated gently over toward the middle of the hall.

"It probably appears complicated to you," explained the Venusian whose side he had just left. "We make use of elements not found on your earth."

Billie's sang froid was not shaken. Instantly she came back energetically: "Apparently your method overcomes gravitation. Why haven't you tried to travel away from your planet?"

And she looked around with the air of one who has uttered a poser, only to have another of the satin-clad people reply, from a point which she was not able to locate:

"Because enough such power cannot be safely concentrated."

As Billie retired, Van Emmon noted with growing irritation that the continuously affable aspect of the Venusians had not altered in any way, unless it was to become even more genial and sure. The big man strode energetically to the microphone, and the other three noted a general movement of interest and admiration as the people inspected him.

"Why," demanded he, "do we see no signs of contention? If you are familiar with conditions on the earth, you surely know that rivalry, in one form or another, is the accepted basis of life. But all of you, here, appear to be perfectly happy, and at the same time entirely sure of yourselves.

"We have just come from a planet where we have seen the principle of combat, of competition, carried so far that it seems to have wrecked the race; so you will pardon my curiosity, I am sure. From your faces, one would conclude that you had abolished self-interest altogether. Just why are you so—well, extraordinarily self-complacent?" And he thrust out his aggressive jaw as though to make up for the lack of chins about him.