A fissure one inch wide and fourteen deep, forming an almost perfect ellipsis, whose diameters are 9 and 5½ rods, marks the exterior limit of the convulsion. Within this curve are several others nearly concentric to it, some forming a quarter, and some half an ellipsis, and near the longer axis are others, running in various directions. On this transverse diameter, which lies near the highest part of the swell above described, and in its longest direction, or parallel to the river, the greatest effect of the convulsion appears. The earth, to the depth it has frozen the past winter, 14 inches, is broken on a straight line above 6 rods, and the south edge of the fissure, having been forced up, overlaps the other, three feet. Where one edge does not thus overreach, the tables of earth, which at a small distance resemble masses of ice, are raised up so that their faces form an isosceles triangle, leaving a cavity beneath. About the extremities of the transverse axis, is also an overlapping of two feet, which continues nearly two rods on the curve each way from the axis, and in most places is double, overreaching internally and externally, exhibiting likewise, some irregularity where the compressing forces acted at right angles to each other. The edges of these elevated masses of earth, which are yet frozen, are quite smooth, and the angles but little fractured. I have dug into the earth about four feet underneath the longer axis of the ellipsis, and thrust down a bar in other places, but cannot perceive that the soil has been moved below where it was frozen. It is, however, not the most favourable season for ascertaining this fact. Every appearance on the spot will justify this conclusion, that the frozen surface of the earth around, has pressed with great force _from every direction_ to this ellipsis as a centre; for, were every fissure in the ellipsis to be filled by replacing the earth, there must remain on its longer axis and at the extremities of this, an overplus of surface two feet wide. The month of February last has been unusually cold. Its mean temperature in Deerfield, by Fahrenheit's scales, is as follows. 7_h._ A. M. 1½_h._ P. M. 10_h._ P. M. 6° 24° 11°