Then he inserted the two tubes (Figure 15) into the rubber, the extremities of the paper being submerged in the liquids, producing a combination that rested upright in the cork as shown by Figure 17.
The surfaces of both liquids were at once lowered by reason of the suction of the bibulous paper, the water decreasing most rapidly, and soon the creeping liquids met by absorption in the paper, the point of contact, as the liquids met, being plainly discernible. Now the old man gently slid the tubes upon each other, raising one a little, so as to bring the surfaces of the two liquids exactly on a plane; he then marked the glass at the surface of each with a pen.
"Observe the result," he remarked as he replaced the tubes in the cork with their liquid surfaces on a line.
Together we sat and watched, and soon it became apparent that the surface of the water had decreased in height as compared with that of the brine. By fixing my gaze on the ink mark on the glass I also observed that the brine in the opposing tube was rising.
"I will call to-morrow evening," he said, "and we shall then discover which is true, man's theory or nature's practice."
Within a short time enough of the water in the tube had been transferred to the brine to raise its surface considerably above its former level, the surface of the water being lowered to a greater degree. (Figure 18.) I was discomfited at the result, and upon his appearance next evening peevishly said to the experimenter:
"I do not know that this is fair."
"Have I not demonstrated that, by properly connecting the liquids, the lighter flows into the heavier, and raises itself above the former surface?"
"Yes; but there is no porous paper in the earth."
"True; I used this medium because it was convenient. There are, however, vast subterranean beds of porous materials, stone, sand, clay, various other earths, many of which will answer the same purpose. By perfectly natural laws, on a large scale, such molecular transfer of liquids is constantly taking place within the earth, and in these phenomena the law of gravitation seems ignored, and the rule which man believes from narrow experience, governs the flow of liquids, is reversed. The arched porous medium always transfers the lighter liquid into the heavier one until its surface is raised considerably above that of the light one. In the same way you can demonstrate that alcohol passes into water, sulphuric ether into alcohol, and other miscible light liquids into those heavier."