By not providing a great deal of detail about the "cylinder" in his radio production of War of the Worlds Welles helped to keep the origin of the alien invaders a mystery. Welles probably chose to do such in order to keep the audience in suspense and to help convince them that the invasion is actually happening.
Part a is: Loss and grief can have powerful effects on the mind.
Part b is: “Eagerly I wished the morrow; — vainly I had sought to borrow / From my books surcease of sorrow — sorrow for the lost Lenore — ” ( Lines 9-10)