us assume it required half a second. During that interval the cylinder would have traversed, at the speed of light, ninety-three thousand miles in a straight line. That is more than eleven times the diameter of this globe. Therefore it is far outside of our atmosphere. Also it proves the mysterious vessel was not bound for Austria or Russia. It was leaving the earth.
How was this velocity attained?
I submit by the reaction of radium upon sunlight.
As every schoolboy knows, the drift of a comet's tail is caused by the pressure of light. As soon as this airship arose to the height of about five hundi-ed yards into sunlight, it began to drift eastward with a rapidly increasing velocity. In other words, the metal skin of the ship, which Mr. Pethwick took for aluminum, was probably a much lighter metal—a metal so light that it was capable of being buffeted along in the surf of sunlight. Now if the ship were propelled merely on the barbs of sunbeams, it would have attained the velocity of light. But the velocity of radium emanations is one-fifteenth that of light. So by running down the light current, and allowing the radium to react against the sunbeams, a speed of one and onefifteenth the velocity of light may be generated; that is one-hundred and ninety-eight thousand miles per second.
Such speed would admit of interplanetary travel.
However, it is probable the men from One could accelerate the radiation from radium by electrical or chemical means. They may have learned to boil the metal as men boil water. In such case the pressure of its radiation would be vastly increased, and with it the possible speed of the ship. This gives an unknown and problematical power of transition far beyond the velocity of light. At such rate a journey even to one of the fixed stars would be within the realm of possibility.
We may therefore with prudence hypothesize that the mysterious ether ship observed in the Valley of the Rio Infiernillo was an interstellar voyager stopping by the earth as a coaling port to refuel with radium.
However, as it is improbable that the ether ship was going beyond the confines of our solar system, a speculation as to what planet the men from One were bound may be reached by noting the day and the hour the ship sailed from the earth.
As our earth swings around the ecliptic, it would be possible for interplanetary mariners to obtain a favorable current of sunlight in any direction. No doubt the navigator of the ether ship was bound for one of the planets in opposition to the sun at the time of the ship's departure. That is to say the yellow men were sailing for either Neptune or Jupiter.
That the men were returning to some planet much larger than the earth is suggested by their small size and extraordinary agility. No doubt these men found the gravitation of the earth slight compared with the attraction to which they were accustomed. This fact gave them extraordinary vigor.
Now let us consider the serial number that formed Mr. Three's name. It was 1753-12,657,109654-3.
This gives rise to a most interesting speculation:
The probable number of the units contained in a series, when any serial number is given, is computed by multiplying together the component parts of the serial number.
For instance, if one has two series of twelve each, the whole number of objects would be twenty-four. If one had six major series of two subseries of twelve each, the total number of units would be 144.
Applying this idea to Mr. Three's serial number, one would find the total probable population of Jupiter, or the land of One, by multiplying the component parts of this number together. This reached the enormous number product of 14,510,894,489,356. That is to say, fourteen and a half quadrillions.
This utterly quashes the Incan hypothesis. There is not room in South America for fourteen and a half quadrillion people—there is not room on the globe for such a number. That, in fact, is the probable population of either Neptune or Jupiter. For sake of simplicity, we will assume it is Jupiter.
No wonder, then, with such an inconceivable population, the inhabitants of Jupiter are militarized. No wonder they suggested Bolshevism to M. Demetriovich.
With such masses of life, all other species of animals are probably extinct. This would explain why the Jovians were so eager to capture specimens of fauna as well as radium.
The last point in the record, the chlorophyllaceous blood, has been to me the most difficult to find any analogy for in our terrestrial experience.
However, we must needs grasp the problem firmly and proceed with considered but ample steps toward any conclusion to which it leads.
Chlorophyll is the coloring matter in plants. I t possesses the power of utilizing energy directly from sunlight. There is no reason to doubt that in the veins of the Jovians it still retains that peculiar power.
With such an extraordinary fluid in his veins, it might be possible for a Jovian to stand in the sunshine and to obtain from it energy and strength, just as a human being obtains energy and strength by eating vegetables that have stood in the sunshine.
In fact, the first method is no more amazing than the second. If, indeed, there be a difference, undoubtedly our human method is the more fantastic. The idea of obtaining energy from sunshine, not by standing in it, as any one would suppose, but by eating something else that has stood in it, is grotesque to the verge of madness.
Let us pursue that thought. No doubt in a concourse of fourteen and a half quadrillion inhabitants space would be so dear that there would be no vacant or tillable land. Therefore on Jupiter every man must absorb whatever sunshine he received. There would be no such thing as eating.
This accounts for the amazement of Mr. Three at seeing Standifer eat his lunch.
To put the same idea in another form—the crew of the ether ship were flora, not fauna.
This accounts for the yellow pear-like texture of
