Nassau, N. P., March 8. Capt. James B. Eads died here on the 8th instant of pneumonia. James B. Eads was born in Lawrenceburg, Ind., in 1820. At an early age he developed a taste for mechanics. At thirteen he went to St. Louis and supported his mother's family by selling apples on the street. He afterward became a civil engineer. He received the contract for building the first seven vessels of the Mississippi gunboat flotilla. He also built the great St. Louis bridge, and has been engaged in a number of prominent engineering projects, the most noticeable of which are the jetties at the mouth of the Mississippi. He leaves a wife and five daughters.