330 



The Ohio Journal of Science [Vol. XX, No. 8,. 



sequential. As one studies the situation in the field, he is 

 astonished that such a mass of heterogeneous solids should 

 have had the capacity of adjusting itself so completely to slight 

 differences in the gradient of its bed. 



EVIDENCE OF SUDDENNESS OF FORMATION. 



Another striking difference from a glacier lies in the fact that 

 the terrane under consideration bears unmistakable evidence 

 of having been formed suddenly. There are numerous frag- 

 ments of the original vegetation which were not destroyed 



Photograph by Robert F. Griggs 



A HILL SCOURED OFF BY THE SLIDE. 



The flving rocks scoured off the soil nearly a hundred feet up this hillside, yet 



before movement ceased the mass slumped away again, leaving a 



deep depression now filled with water, forming 



the Horseshoe Pond. 



by the catastrophe. Some of these, indeed, still remain alive 

 and have begun to grow again. (Seepage 331). Such a thing would 

 hardly have been possible in a glacier, for its action is a typical 

 example of the working of the old adage, "The mills of the Gods 

 grind slowly, but they grind exceeding fine." The trans- 

 portation of such a bowlder as that shown on page 331, from 

 the mountain top down into the valley by a glacier would 

 require a number of years, during which all traces of vegetation 

 would in all probability have been ground up in the repeated 



