159 
[Putnam' 
implements, and ornaments of shell, bone and stone were found. 
The three distinct periods of occupation of the Delaware valley are 
thus distinctly shown; and this rock-shelter is a perfect exempli- 
fication of the results which Dr. Abbott obtained from a study of 
the specimens which he has collected upon the surface, deep in the 
black soil, and in the gravel, at Trenton. 
The President then alluded to a recent paper by Mr. McGee, as 
a clear presentation of the geological condition under which early 
man existed in North America, but it is to be regretted that Mr. 
McGee had not examined the collection of palaeolithic implements 
in the Peabody Museum, before writing liis paper; for, had he 
done so, he would not have fallen into several errors in relation 
to some of the objects. Particularly in intimating that the speci- 
mens obtained by Miss Babbitt in the drift at Little Falls, Minn., 
were simply chips of quartz and of doubtful artificial character. 
To show that this was an error, the President exhibited a number of 
specimens, sent to the Peabody Museum by Miss Babbitt, all of 
which were found associated and in place in the river drift, a de- 
scription of which has been given by Mr. Upham in a carefully 
prepared paper at one of our meetings last winter. These speci- 
mens found by Miss Babbitt are all of white quartz, and while some 
are simply chips, others of these before you are identical in shape 
as well as material with .the specimens obtained by Dr. Abbott in 
the Trenton gravel, and certainly their artificial character will not 
be questioned. Fig. 4 is of one of these quartz implements from 
the Trenton gravel placed here for comparison with fig. 5, which 
is one of the quartz implements from Little Falls. Figs. 6 and 7 
are two other chipped implements of quartz from Little Falls. 
Certainly these are something more than chips and are unquestion- 
ably artificial. 
The President then alluded to the importance of the collection 
of palaeolithic implements in the Peabody Museum at Cambridge, 
where nearly all the specimens obtained from the Trenton gravel, 
the two from the Delaware, one from the Indiana, and the two from 
the Ohio gravels, with a large proportion of those collected by Miss 
Babbitt at Little Falls, are exhibited side by side. 
