Mr. J. J. O'Brien gave a very interesting and amusing talk on "A Modern Method of Self-Defense, an Adaptation from Jiu-Jitsu" before a large audience in the Living Room of the Union last evening. He illustrated his ideas of self-defense with a variety of tricks.

Mr. O'Brien first explained the principle of jiu-jitsu and showed that the success of any grip depended solely on the leverage gained by the expert. The entire science is a knowledge of the laws of balance and equilibrium. There is not great strength needed; speed is the essential quality. He then illustrated various methods of fighting and throwing, among them a trick to prevent an antagonist from drawing a revolver, or from firing it once it is drawn. In concluding he showed several ways of breaking the best known wrestling holds.