DIED ON THE PLAINS.—We learn with regret of the death of Mr. Joseph Sharp, the youngest brother of Bishop Sharp of the 20th Ward. He died on Wednesday morning at Willow Springs, on his way back to this city with a train of goods. Death is seldom a welcome visitor; but at times he summons home his victims under very afflicting circumstances—it has been so in this case. The Bishop sends out, this morning, a metalic coffin to bring in the remains of the deceased to inter them in the cemetery. We sincerely sympathise with the bereaved.