The San Diego Union says: San Diego possesses a genuine heroine in the person of a young lady named Miss Lawrence. Last Tuesday a band of wild cattle were being driven through the streets, when one of them singled out a child at play and started for it. The vaquero, who was drunk, tumbled from his horse as he attempted to turn the furious animal. At this moment Miss Lawrence came along, and taking in the situation at a glance, sprang into the vacant saddle, ran down the wild steer, threw her shawl over its head just as it was about to gore the child, and taking advantage of the confusion of the beast, rode up to the child, and without leaving her saddle reached to it and lifted it into her lap, and then carried it off in safety. This was not only a genuine act of heroism, but an exhibition of horsemanship such as few in this section could equal.