In plotting the profile of a railroad survey, the engineer uses paper several feet long and 8 to 12 inches wide, covered with fine horizontal lines, running the whole length of it and ruled so close together, that there are from 20 to 50 lines to the inch. Then there are other lines drawn across the paper at right angles to the first, and one-fourth of an inch apart. These last represent distances of 100 feet each; or “stations;” while each of the spaces between the horizontal lines is called a foot. Having the survey of a line of stations with the relative height of each, ascertained by a leveling instrument, the line is plotted on this paper so that its distance from the lower edge of the paper at each station corresponds with the height of the ground at that station. The irregular line thus formed is a fac simile of the surface of the ground with its vertical undulations and irregularities. The engineer then draws a grade line on this profile of the ground, that indicates the position of the surface of the road bed, as he intends it to be when finished. In some places this line is above the ground line and this indicates that here is to be a fill. In other places it runs below, and this shows a cut. Now the profile that the Lunarian Professor of “Mundane Prognostication” held in his multiple hands (I shall call him the Professor hereafter) very much resembled in appearance that just described, except that instead of only one there were several profiles on this one strip of paper, one above another. In each one there was the irregular surface line accompanied with the more or less straight grade line showing cuts in some places and fills in others. The professor explained these profiles to be graphic exhibits of the state of various human institutions and conditions as they appeared during a continuous term of time beginning in the past, and extending into a far distant future. After examining these profiles a short time, I had little difficulty in getting the ideas intended to be conveyed by them. They will be readily understood without much explanation. Thus the line of “muscular development” is shown in the remote past as being almost up to grade, but as gradually falling below it in the course of time, then rising again and coming almost to the grade line about the year 2500, but after that gradually falling away again. Selfish instinct, which has always shown heavy cutting, comes down nearly to grade, about the year 7200. While altruistic instinct that regards the common welfare and has been below grade, always, but at times higher than at present, is seen to rise and come to grade about the same time. Health has always shown a fill, often a large one, but gradually rises almost to grade about the year 2500. Crime has always been a cut, but disappears in the future about the same time as theology.