In the sharp air of the autumn morning he saw this one and that one of his men sullenly following the plough behind the oxen, and taking little joy in the work.  Then, as he passed on to the rising ground, he heard a lark carolling gaily in the grey sky, and in the hundred-acre where Isidore was engaged he saw to his amazement not one plough but three turning the hoary stubble into ruddy furrows.  And one plough was drawn by oxen and guided by Isidore, but the two others were drawn and guided by Angels of heaven.