But before she could follow up her point the door opened and the doctor returned with her husband.  Kinney did not allow any tension to develop; instead, he said briskly: 

“There’s only a couple of hours remaining between now and dinner time; I move we get busy.”  He glanced about the room, to see if all was in place.  The four chairs, each with its legs tipped with glass; the four footstools, similarly insulated from the floor; the electrical circuit running from the odd group of machinery in the corner, and connecting four pair of brass bracelets—­all were ready for use.  He motioned the others to the chairs in which they had already accomplished marvels in the way of mental traveling.

“Now,” he remarked, as he began to fit the bracelets to his wrists, an example which the rest straightway followed; “now, we want to make sure that we all have the same purpose in mind.  Last time, we were simply looking for four people, such as had view-points similar to our own.  To-day, our object is to locate, somewhere among the planets attached to one of the innumerable sun-stars of the universe, one on which the conditions are decidedly different from anything we have known before.”

Billie and Van Emmon, their affair temporarily forgotten, listened eagerly.

“As I recall it,” Smith calmly observed, “we agreed that this attempt would be to locate a new kind of—­well, near-human.  Isn’t that right?”

The doctor nodded.  “Nothing more or less”—­speaking very distinctly—­ “than a creature as superior as we are, but not in human form.”

Smith tried hard not to share the thrill.  He had been reading biology the previous week.  “I may as well protest, first as last, that I don’t see how human intelligence can ever be developed outside the human form.  Not—­possibly!”

Van Emmon also was skeptical, but his wife declared the idea merely unusual, not impossible.  “Is there any particular reason against it?” she demanded of the doctor.

“I will say this much,” cautiously.  “Given certain conditions, and inevitably the human form will most certainly become the supreme creature, superior to all the others.

“However, suppose the planetary conditions are entirely different.  I conceive it entirely possible for one of the other animals to forge ahead of the man-ape; quite possible, Smith,” as the engineer started to object, “if only the conditions are different enough.

“At any rate, we shall soon find out.  I have been reading further in the library the Venusians gave us, and I assure you that I’ve found some astonishing things.”  He fingered one of the diminutive volumes.  “There is one planet in particular whose name I have forgotten, where all animal life has disappeared entirely.  There are none but vegetable forms on the land, and all of them are the rankest sort of weeds.  They have literally choked off everything else!