John Gray, civil engineer, good looking and aged twenty-eight, was engaged in the service of the United States of America. He had, upon emerging from college, been fortunate enough to secure a place among the new graduates who are utilized in making what is called the "lake survey," that is, the work upon the great inland seas we designate as lakes, and had finally from that drifted into work for the Agricultural Department--a department which, though latest established, is bound, with its force for good upon this great producing continent, to rank eventually with any place in the cabinet of the President. In the Agricultural Department John Gray, being clever and a hard worker, had risen rapidly, and had finally been appointed assistant to the ranking official whose duty it was to visit certain arid regions of Arizona and there seek by scientific methods to produce a sudden rainfall over parched areas, and so make the desert blossom as the rose. Mr. John Gray went with the expedition, and distinguished himself from the beginning. He could endure hard work; he was a good civil engineer and comprehended the theory upon which his superiors were working, and above all, he was an enthusiast in the thing they were undertaking, and had independent devices of his own, to be submitted at the proper time, for the attainment of certain mechanical ends which had puzzled the pundits at Washington. He had ideas as to how should be flown the new form of kite which should carry into the upper depths explosives to shatter and compress the atmosphere and produce the condensation which makes rain, just as concussions from below--as after the cannonading of a great battle--produce the same effect. He had fancies about a lot of things connected with the work of the rain-making expedition, and his fancies were practicalities. He proved invaluable to his superiors in office when came the experiments the reports of which at first declared that rain-making was a success, and later admitted something to the contrary. There had been, as all the world knows, certain experiments of the government rain-makers followed by rains, and certain experiments after which the earth had remained as parched and the sky as brazen as before. The one successful experiment had, as it chanced, been conducted under Mr. Gray's personal and ardent supervision. He had overseen the flying of the kites, the impudent invasion of the upper depths when a button was touched, and then he had seen the white cumulus clouds gather and become nimbus, followed by a brief rainfall upon a hot and yellow land. He had felt as Moses may have felt when he smote the rock, as De Lesseps may have felt when he brought the seas together. He thought one of the man-helping problems of the ages almost solved.