R.S. ADAMS, Prof. of Music died suddenly yesterday afternoon. For some time he has been boarding at Philip BREEN's and took a light dinner about 1 o'clock. Shortly afterward he was found by Thomas BREEN lying on the floor of the water closet apparently dead. Dr. Ross was at once called who pronounced life extinct. An inquest was held by coroner Rose. The Professor was a native of England where his family resides.