About the 21st or 22d of December is the shortest day. After that the days begin to lengthen and the sun comes back, and for many centuries in most nations they had a festival in commemoration of that event. The Christians, I presume, adopted this day, and made the birth of Christ fit it. Three months afterward--the 21st of March--the days and nights again become equal, and the day then begins to lengthen. For centuries the nations living in the temperate zones have held festivals to commemorate the coming of spring--the yearly miracle of leaf, of bud and flower. This is the celebration known as Easter, and the Christians adopted that in commemoration of Christ's resurrection. So that, as a matter of fact, these festivals of Christmas and Easter do not even tend to show that they stand for or are in any way connected with the birth or resurrection of Christ. In fact the evidence is overwhelmingly the other way. While we are on the calendar business it may be well enough to say that we get our numerals from the Arabs, from whom also we obtained our ideas of algebra. The higher mathematics came to us from the same source. So from the Arabs we receive chemistry, and our first true notions of geography. They gave us also paper and cotton. Owing to the fact that the earth does not make its circuit in the exact time of three hundred and sixty-five days and a quarter, and owing to the fact that it was a long time before any near approach was made to the actual time, all calendars after awhile became too inaccurate for general use, and they were from time to time changed. Right here, it may be well enough to remark, that all the monuments and festivals in the world are not sufficient to establish an impossible event. No amount of monumental testimony, no amount of living evidence, can substantiate a miracle. The monument only proves the _belief_ of the builders. If we rely upon the evidence of monuments, calendars, dates, and festivals, all the religions on the earth can be substantiated. Turkey is filled with such monuments and much of the time wasted in such festivals. We celebrate the Fourth of July, but such celebration does not even tend to prove that God, by his special providence, protected Washington from the arrows of an Indian. The Hebrews celebrate what is called the Passover, but this celebration does not even tend to prove that the angel of the Lord put blood on the door-posts in Egypt. The Mohammedans celebrate to-day the flight of Mohammed, but that does not tend to prove that Mohammed was inspired and was a prophet of God. Nobody can change a falsehood to a truth by the erection of a monument. Monuments simply prove that people endeavor to substantiate truths and falsehoods by the same means.