Within the space of four days Lieutenant Commander Edward Ellsberg, the expert on naval salvage, and Count Felix von Luckner, the German sea-raider, will speak at the Union, it was announced last night. Tomorrow Lieutenant Commander Ellsberg will relate his experiences; and on Tuesday Count Luckner will tell about his adventures.

Lieutenant Commander Ellsberg conducted the salvage operations on the submarines S-51 and S-4 while Count Luckner is best known for his raiding of 17 Allied ships during the war without killing or injuring a man. Ellsberg has encountered many dangers in his 14 years of experience in salvage work, when diving to direct operations on sunken vessels. For his work in the salvaging of the S-51 he has been awarded the distinguished Service Medal.

Count Luckner is one of the best known World War figures and is famous because of his daring raids conducted with a camouflaged schooner. He has been decorated several times for bravery and for chivalrous treatment of his prisoners.