After a lull of ten months since the dastardly vandalism in the Weeden lot at the North Burial Ground, a nocturnal prowler was glimpsed early this morning in the same cemetery by Robert Hart, the night watchman. Happening to glance for a moment from his shelter at about two a.m., Hart observed a glow of a lantern or pocket torch not far to the northward, and upon opening the door detected the figure of a man with a trowel very plainly silhouetted against a nearby electric light. At once starting in pursuit, he saw the figure dart hurriedly toward the main entrance, gaining the street and losing himself among the shadows before approach or capture was possible.