Rear-Admiral William Sowden Sims of the United States Navy, Retired, will address the Harvard unit of the Naval Reserve Officer's Training Corps on "Naval Reminiscences" at 12 o'clock today, in the Old Fogg Auditorium. In order to allow all the students of the Naval Science Department to hear his talk all classes in that Department are to be omitted.

It is expected that Rear-Admiral Sims will again meet Rear-Admiral Campbell, an old friend of his, who has had a brilliant career in the British Navy and who is, by coincidence, to speak at the Union tonight on "How the British Q Boats Fought the German Submarines".

Although the address of Rear-Admiral Sims is open to the entire University Admiral Sims said last night that it would probably be an informal talk of especial interest to the students of Naval Science.