1888-1 
151 
[Cresson. 
cident. In company with Mr. W. R. Thompson of Philadelphia, 
in the month of May, 1886, I was making a casual examination of 
the gravel deposit along White river, when I noticed the boulder, 
and it was while digging with a hunting-knife about the boulder, 
in order to ascertain whether there were any glacial scratches 
upon it, that I found the palseolith. Careful study of gravel de- 
posits in the valley of the Somme, where I had found implements 
of the river drift men in place, led me to recognize the importance 
of this discovery and take particular note of the fact that the pal- 
seolith lay in an undisturbed aqueous deposit. 
The implement is chipped from a mass of gray flint. It is tri- 
Fig. 1. Section of bluff at White River, Jackson Co., Ind. S, soil; L, gravel; R 
boulder; P, position of the implement; W-X, talus; D, D , older gravel. 
angular and measures 6|- inches in length, 3| inches in greatest 
width and is 1 1 inches in thickness. It is now in the Peabody Muse- 
um at Cambridge, and bears the catalogue number 46145. See 
pages 162, 163 for figures. 
In relation to this gravel deposit on the White River, the follow- 
ing extract from a letter of my friend, Prof. G-. F. Wright is of 
interest. 
“From my notes it seems to me most likely that the situation 
is nearly identical with that at Trenton. The east fork of the 
White River occupies a very interesting relation to the ice move- 
ment, as a glance at the glacial boundary will show. The Illinois 
lobe of ice which crosses the outlet of White River extends con- 
siderably farther south than the lobe extending to the vicinity of 
Louisville and occupied by the head waters of the stream. This 
would have prevented much of a secondary glacial accumulation 
from taking place through Davies, Martin and Lawrence Counties. 
