The perfection of the destination control compass by Carthoris of Helium is considered by many authorities to have marked the beginning of a new era of invention. For centuries we seemed to have stagnated in a quiet pond of self-sufficiency, as though we had reached the acme of perfection beyond which it was useless to seek for improvement upon what we considered the highest possible achievements of science.
Carthoris of Helium, inheriting the restless, inquiring mind of his earth-born sire, awoke us. Our best minds took up the challenge and the result was rapid improvement in design and construction of air ships of all classes, leading to a revolution in motor building.
We had thought that our light, compact, powerful radium motors never could be improved upon and that man never would travel, either safely or economically, at a speed greater than that attained by our swift one-man scout fliers-about eleven hundred haads per zode (Note: Approximately one hundred and sixty-six earth miles per hour), when a virtually unknown padwar in the navy of Helium announced that he had perfected a motor that, with one-half the weight of our present motors, would develop twice the speed.
It was this type of motor with which my scout flier was equipped-a seemingly fuelless motor, since it derived its invisible and imponderable energy from the inexhaustible and illimitable magnetic field of the planet.
There are certain basic features of the new motor that only the inventor and the government of Helium are fully conversant with and these are most jealously guarded. The propeller shaft, which extends well within the hull of the flier, is constructed of numerous lateral segments insulated from one another. Around this shaft and supporting it is a series of armature-like bearings, through the center of which it passes.
These are connected in series with a device called an accumulator through which the planet's magnetic energy is directed to the peculiar armatures which encircle the propeller shaft.
Speed is controlled by increasing or diminishing the number of armature bearings in series with the accumulator-all of which is simply accomplished by a lever which the pilot moves from his position on deck where he ordinarily lies upon his stomach, his safety belt snapped to heavy rings in the deck.
The limit of speed, the inventor claims, is dependent solely upon the ratio of strength to weight in the construction of the hull. My one-man scout flier easily attains a speed of two thousand haads per zode (Note: Approximately three hundred miles per hour), nor could it have withstood the tremendous strain of a more powerful motor, though it would have been easy to have increased both the power of one and the speed of the other by the simple expedient of a longer propeller shaft carrying an additional number of armature bearings.
In experimenting with the new motor at Hastor last year, an attempt was made to drive a scout flier at the exceptional speed of thirty-three hundred haads per zode (Note: Approximately five hundred miles per hour; a haad being 1949.0592 earth feet and a zode 2462 earth hours), but before the ship had attained a speed of three thousand haads per zode it was torn to pieces by its own motor. Now we are trying to attain the greatest strength with the minimum of weight and as our engineers succeed we shall see speed increased until, I am sure, we shall easily attain to seven thousand haads per zode (Note: Over one thousand miles per hour), for there seems to be no limit to the power of these marvelous motors.
Little less marvelous is the destination control compass of Carthoris of Helium. Set your pointer upon any spot on either hemisphere; open your throttle and then lie down and go to sleep if you will. Your ship will carry you to your destination, drop within a hundred yards or so of the ground and stop, while an alarm awakens you. It is really a very simple device, but I believe that John Carter has fully described it in one of his numerous manuscripts.
In the adventure upon which I had embarked the destination control compass was of little value to me, since I did not know the exact location of Jahar. However, I set it roughly at a point about thirty degrees south latitude, thirty-five degrees east longitude, as I believed that Jahar lay somewhere to the southwest of that point.
Flying at high speed I had long since left behind the cultivated areas near Helium and was crossing above a desolate and deserted waste of ocher moss that clothed the dead sea bottoms where once rolled a mighty ocean bearing upon its bosom the shipping of a happy and prosperous people, now but a half-forgotten memory in the legends of Barsoom.
Upon the edges of plateaus that once had marked the shore line of a noble continent I passed above the lonely monuments of that ancient prosperity, the sad, deserted cities of old Barsoom. Even in their ruins there is a grandeur and magnificence that still has power to awe a modern man. Down toward the lowest sea bottoms other ruins mark the tragic trail that that ancient civilization had followed in pursuit of the receding waters of its ocean to where the last city finally succumbed, bereft of commerce, shorn of power, to fall at last an easy victim to the marauding hordes of fierce, green tribesmen, whose descendants now are the sole rulers of many of these deserted sea bottoms. Hating and hated, ignorant of love, laughter or happiness, they lead their long, fierce lives quarreling among themselves and their neighbors and preying upon any chance adventurers who happen within the confines of their bitter and desolate domain.
Fierce and terrible as are all green men, there are few whose cruel natures and bloody exploits have horrified the minds of red men to such an extent as have the green hordes of Torquas.
The city of Torquas, from which they derive their name, was one of the most magnificent and powerful of ancient Barsoom. Though it has been deserted for ages by all but roaming tribes of green men, it is still marked upon every map, and as it lay directly in the path of my search for Jahar and as I had never seen it, I had purposely laid my course to pass over it, and when, far ahead, I saw its lofty towers and battlements I felt the thrill of excitement and the lure of adventure which these dead cities of Barsoom proverbially exert upon us red men.
As I approached the city I reduced my speed and dropped lower that I might obtain a better view of it. What a beautiful city it must have been in its time! Even today, after all the ages that have passed since its broad avenues surged with the life of happy, prosperous throngs, its great palaces still stand in all their glorious splendor, that time and the elements have softened and mellowed, but not yet destroyed.
As I circled low above the city I saw miles of avenues that have not known the foot of man for countless ages. The stone flagging of their pavement was overgrown with ocher moss, with here and there a stunted tree or a grotesque shrub of one of those varieties that somehow find sustenance in the desert and wasteland. Silent, deserted courtyards looked up at me, gorgeous gardens of another happier day. Here and there the roof of a building had fallen in, but for the most part they remained intact, dreaming, doubtless, of the wealth and beauty that they had known in days of yore, and in imagination I could see the gorgeous sleeping silks and furs spread out in the sunlight, while the women idled beneath gay canopies of silks, their jeweled harnesses scintillating with each move of their bodies. I saw the pennons waving from countless thousands of staffs and the great ships at anchor in the harbor rose and fell to the undulations of the restless sea. There were swaggering sailors upon the avenues, and burly, fighting men before the doors of every palace. Ah, what a picture imagination conjured from the deathlike silence of that deserted city, and then, as a long, swinging circle brought me above the courtyard of a splendid palace that faced upon the city's great central square, my eyes beheld that which shattered my beautiful dream of the past. Directly below me I saw a score of great thoats penned in what once may have been the royal garden of a jeddak.