The management announces the engagement for three nights only at the (rand Opera House, Kov. 11, 12 and 13, of Santanelli, the master of hypnotism, and the most talked about man of the day. His long successful series of entertainments in Detroit, covering 28 performances, caused the liveliest commotion among men of learning, the newspapers particularly, and the medical profession generally. Santanelli's endorsement signed by 75 ( f Detroit's best known physicians, and 26 medical students frora the Detroit College of Medicine and the Michigan College, pronounce him a man of honesty of purpose and thoroughness in all his claims. He is a mystifier of the deepest skill: many physicians and scientific men and women attend his interesting exliibitions, solely for what they may be able to gain in the study of hypnotism.