The Aeronautical Society will conduct a cinematograph exhibit of aeroplanes in flight, in Brattle Hall next Monday evening at 8 o'clock. Motion views of the late Ralph Johnstone performing the "spiral glide" in the Wright machine. Le Blanc in a Bleriot monoplane making a world's speed record of 68 miles an hour, Paulhan flying at Los Angeles, and other flyers at recent aviation meets, will be shown. A public admission of 50 cents will be charged, and society members will be admitted free on showing their 1910-11 membership cards, which may be obtained from A. Sweetser '11, on payment of dues.