892 proceedings of the academy of [dec, 



Identity in Position of the Point of Impact of the Meteorite 

 WITH the Center of the Hole, and Identity in Time of the 

 Formation of the Hole with the Impact of the Meteorite. 



We thus have two different meteoric materials distributed over the 

 rim of the hole and the surrounding plain on areas symmetrical about 

 the same line, which is a line drawn in a north-northeasterly direction 

 from the center of the hole. And also each of these areas closely 

 embraces the hole and there terminates. For, with few exceptions, no 

 iron nor magnetite has been found on the surface within the hole, and 

 these exceptional pieces were found close to the wall, and may have 

 fallen in by ordinary weathering action from the cliffs along with out- 

 side surface material. This brings these meteoric materials into close 

 relation with the hole, which cannot be accidental, as if the shower of 

 meteoric iron and magnetite fell after the formation of the hole, by 

 other agencies, it is inconceivable that the densest portion of the 

 shower of each material should coincide accurately with the north- 

 easterly rim of the hole and yet none fall into it, although scattered 

 individuals of each shower are found around the hole on all sides. 

 Wliereas, if the shower occurred before the formation of the hole, it is 

 equally inconceivable that the fallen material could be found most 

 thickly on the surface of the rim, composed of material ejected from the 

 hole. To further assiu'e the absolute identity in point of time of the 

 fall of meteoric material and the formation of the hole, cuts and shafts 

 were made in the debris composing the rim, and up to date over one 

 hundred pieces of meteoric material have been taken from the ground, 

 at distances varying from six inches to twenty-seven feet below the 

 surface, mixed with the rim material and under large imbedded rocks. 

 In many places it was absoluteh' impossible, from the slope of the 

 ground and other circumstances, that the}^ could have gotten where 

 found except by simultaneous deposition with the broken material 

 forming the rim. In one shaft seven pieces were found with fifteen 

 feet of vertical depth between the highest and the lowest, which was 

 twenty-seven feet below the surface of the ejected material. 



The Rim. 



This consists, as has been briefly stated before, of a circular ridge of 

 from 130 to 160 feet high closely surrounding the hole. A generalized 

 description of its profile would be somewhat as follows : Beginning at 

 a point on the inside of the hole on a level with the surrounding plain, 

 the surface of the rim consists of the edges of the strata which should 



