Another good audience assembled last evening to reap the benefit of the third and last lecture of this series. The exercises were opened with a song by the school, "In the Sweet Bye and Bye," which was rendered by request of President Powell.
    Prof. Dean then commenced the lecture on pneumatics, after his usual style, by reciting the earliest theories of air and water.
    With very good experiments he showed how nature abhors a vacuum, and he also related how Galileo found that nature does not abhor a vacuum below 33 feet.
    It was proved that common atmosphere had a weight or pressure of about fifteen pounds to the square inch. The pressure from within is equal to that from without, hence, bleeding at the nose when ascending high mountains, where the air becomes rarefied.
    Oxygen gas was then produced and its uses explained. Life would be intensified and shortened by breathing oxygen. Combustion is aided by oxygen, but nitrogen is a suffocating gas, and will extinguish a flame. Snakes will live in nitrogen for several months.
    A white precipitate was formed by the union of lime water and carbonic acid gas. There is a valley in Japan where carbonic acid gas is so prevalent that it is dangerous to travel there.
    During a short intermission Prof. Bradley read Tennyson's sublime poem entitled "Break, Break, Break." The electric light was then compared with the burning of magnesium wire, which gives the purest light known to the world.
    Prof. O. B. Johnson then brought forth the little phonograph. He proceeded to salute "Mr. Phonograph" and carry on an ordinary conversation. The machine imitated the sound so well that it met with great applause. The Professor fully explained the phonograph and created great sport by making the little fellow repeat funny sayings.
    A song was then rendered having the title "Kallamakeewahgoolurkilykankangeewakillivan," which, translated, means "Home, Sweet Home," with variations.
    Prof. Bradley recited with a great deal of vim that old but very comical piece, "A Sneak in School."
    President Powell then made a few remarks, in which he thanked his people for their hearty cooperation in this work. He said that $120 being received, they would be enabled to purchase the apparatus. In about two or three weeks the students will give their second series of entertainments, the proceeds of which go to purchase musical instruments.