tornado in this section of country, and yet one was at hand. To give a faithful and accurate description of the movements and conduct of this storm-cloud, made it necessary for me to pass over the route of the moving mass and observe critically its results, and also to inquire of those living along and near its track what was its appearance, what was the direction of its sweep through the forest trees, how far the _debris_ were carried, what amount of life was destroyed, what was the width of its track, and how the rotary motion of the cloud seemed to affect the buildings and obstacles that vainly attempted to resist its march in a direction a little south of east. The first point of interest in connection with the tornado was about one mile south-east of the Gap station, on the Penn'a Rail Road, and about two miles west of the boundary line between Chester and Lancaster counties. From this point the storm-cloud proceeded for about two miles in a direction south 70 degrees east, or about 20 degrees south of a line running due east. About three-fourths of a mile east of Sadsbury Meeting House a slight change of direction occurred in the movement of the cloud, and it took a direction a little to the north, running south 75 degrees east. It proceeded, with slight local variations, for about eight miles in a direct line, and cutting a track about 200 yards wide, until it reached the property of William Hamill, in East Fallowfield township, near Newlin's Mill, and here it widened to about 300 yards, destroying the fences, crops, etc., on his property. At this point a slight change of direction occurred towards the south, bringing it into contact with the timber tracts of E. Phipps and Thos. Shields, in which a terrible destruction of forest trees occurred. It now veered to the north about ten degrees, and passed through the southern half of the village of Ercildoun in a line south 83 degrees east, or in a direction nearly due east, and continued thence until it arose in the air about half-a-mile east of Ercildoun, and proceeded, at a higher elevation, for about seven miles, relieving the farms and property of the intervening country from destruction. As it approached Broad Run, about a mile west of Marshallton, it descended sufficiently long to unroof and almost destroy the barns and out-buildings of two properties, owned respectively by Richard Baily and Joseph Marshall, of West Bradford township. Here it came to an end in its mad and reckless career. The two opposing currents of air had no doubt now become thoroughly blended and partook of the character of a high wind, fully relieved of its devastating properties. The storm-cloud was dissolved, or had permanently taken a higher elevation over a still greater amount of territory. The whole route of the tornado, as measured by its effects, was about 22 miles. The width of its track was from 100 to 300 yards, averaging generally about 200 yards. The