566 INTER-GLACIAL AMERICAN MAN. 



of consideration ; for it appears to be tlie only instance as yet 

 observed of the occurrence of a drift implement of this mineral. 

 Dr. Abbott remarks: "This specimen was taken from the gr&vel, 

 at a depth of six feet from the surface, on the site of the Lutheran 

 Church, Broad Street, Ti-enton, N. J. It was found lying in situ, 

 in a shallow stratum of coarse pebbles, and clearly showed by its 

 surroundings that it had not gotten in its position, where found, 

 subsequently to the deposition of the containing layer of pebbles." 

 When discussing the most likely objections to the conclusion affirmed 

 by him, he asks : " Ought not these impleinents to be distributed 

 equally throughout the area of the deposit?" and thus replies : "I 

 have carefully considered this, and hoped to give a satisfactory reply 

 by finding these same forms in widely separated localities ; but in 

 this I have failed, unless the exception of a siiigle rude spear-head 

 be accepted as indicative of a comparatively wide disbribution of 

 these palaeolithic relics ; this single specimen being taken from gravel, 

 some distance from the river shore, and a mile from the bluff where 

 the bulk of the collection was discovered. It must be remembered, 

 however, that the gravel generally has not been systematically 

 examined, and we do not know that these same implements are 

 not abundant even elsewhere ; although this I consider doubtful, 

 inasmuch as they were probably not as numerous originally as the 

 stone implements of the Indians subsequently were; and the majority 

 would, I suppose, be broken and worn to ordinary oval pebbles, in 

 the rubbing and grinding together of these and other fragments of 

 rocks, while being transported either by ice or water." 



While the Report was passing through the press. Dr. Abbott added 

 the following note in reference to this single rude speai'-head taken 

 from the gravel: "Since the above was in type, I have been successful 

 in discovering several well marked specimens^ in many and widely 

 separated localities, and am now led to believe that they will be met 

 with in the gravel beds wherever occurring in Southern and Central 

 New Jersey." It is not clearly apparent whether this note is designed 

 to imply that these several well marked specimens of the spear-head 

 type were also of flint. In a subsequent part of the Report, when 

 referring to the character of the undei-lying soil, in relation to the 

 lower accumulation of stone and gravel, where the large boulders 

 occur in situ, he adds : "In such a stratum, immediately beneath a 

 stone that would weigh at least half a ton, I found a well chipped 

 spear-shaped implement." This, I infer, was not of flinfc,^ as 'the 



