These fires occur--of course--in the summer--when the grass is dry as tinder--and the flames rush and roar over the prairie in a manner frightful to behold. They usually burn better than mine is burning to-night. I try to make my prairie burn regularly--and not disappoint the public--but it is not as high-principled as I am. (The scene was a transparent one--the light from behind so managed as to give the effect of the prairie on fire. Artemus enjoyed the joke of letting the fire go out occasionally, and then allowing it to relight itself.) (Picture of) Brigham Young at home. The last picture I have to show you represents Mr. Brigham Young in the bosom of his family. His family is large--and the olive branches around his table are in a very tangled condition. He is more a father than any man I know. When at home--as you here see him--he ought to be very happy with sixty wives to minister to his comforts--and twice sixty children to soothe his distracted mind. Ah! my friends-- what is home without a family? What will become of Mormonism? We all know and admit it to be a hideous wrong--a great immoral strain upon the 'scutcheon of the United States. My belief is that its existence is dependent upon the life of Brigham Young. His administrative ability holds the system together--his power of will maintains it as the faith of a community. When he dies--Mormonism will die too. The men who are around him have neither his talent nor his energy. By means of his strength it is held together. When he falls--Mormonism will also fall to pieces. That lion--you perceive--has a tail. It is a long one already. Like mine--it is to be continued in our next. (Reprise of first picture of curtain and footlights. The curtain fell for the last time on Wednesday, the 23d of January 1867. Artemus Ward had to break off the lecture abruptly. He never lectured again.) 6.3. "THE TIMES" NOTICE.