ARROWPOTNTS, SPEARHEADS, AND KMVKS. f)25 



t'(li;cs it iiiigiit lijive been a very elTecti\e w Ciipon. Dr. Abbott asserts 

 that the large pr<)i)orti()ii of these implements are foiiiid in the alluvial 

 soil in proximity to the glacial gravel at a depth that proves their 

 antiquity. Their number increases in proportion to the depth of the 

 excavation for a certain distance, when they stoi), while the raleolithic 

 imi)lements proper continue to a greater dei)th. Dr. Abbott believes 

 these imi)lements to have been used as harpoons for the capturing of 

 fish, and he cites, as evidence sui)porting his theory, the fact tliat tliey 

 are nearly all found along the borders of the streams. He remarks 

 the great sijnilarity of tin sc implements with those used for a similar 

 purpose by the Eskimos, and cites corresjionding implements and lig- 

 ures des(;ribed by Sir John Lubbock.' He propounds the theory 

 whether the Eskimos may not have been driven down by the glaciers 

 and occupied the territory of New Jersey, New York, Connecticut, etc., 

 or whether driven down or not, they may not, with their present love of 

 cold or tor other reasons unknown, have dwelt near the foot of the 

 glacier in these States and followed it up in its retreat north, until 

 they came to occupy the present boreal region. It would seem to be 

 indisputable that the territory around the feet of these glaciers was 

 occupied by man, if it had not been prior to their descent. Tlie imi)le- 

 ments found in the Trenton gravels would seem to show this. If this be 

 accepted, the (question may be fairly asked, What became of this i)eople; 

 who are their descendants; and, after the retreat of the glacier and the 

 exposure of the country north, what course of departure, extension, 

 or migration did their descendants take? Tliese theories are not yet 

 demonstrated and may never be, but they are worthy of })r()f()UHd 

 investigation and study. 



cr.Ass V. — sn(ni,i)i;i{Ki) ani> i-.ariuoi). (Plafcs 1^5, "(1.) 



Jv„ -/'-I r-iJ ''.L 



The prehistoric man did not, in his manufacture of these imple- 

 ments, divide them into classes. The diflerent forms were made 

 according to the possibilities of tlie material, the dexterity .of the 

 workman, and the exigencies of the situation. The classilication is 

 now made solely for the i)urpose of enabling us in modern times to 

 describe and understand them. Class C comprises those which have 

 stems, shoulders, and barbs. The ditference between the present class, 

 C, and the preceding, B, is that the shoulders in the former were hori 

 zontal, at a right angle or more than a right angle to the inedinn line 



Preliiatorifi 'I'jiiics, p. 50;5, lij;. lilS. 



