186 r/ie Arnei'ieav Geologist. March, 1893 
raine and the southern border of the glaciated area is essentially 
the same as that of the moraine itself, and of the deposits north 
of the moraine. The bowlders are mixtures {a) of similar types 
of granitoid rocks from the far north, (h) of easily recognizable 
upper Silurian rocks from a moderate distance north, ic) of local 
types of gneiss, lower Silurian limestone, Hint, vitreous quartz 
and slate. In many places there are such alnindant accumulations 
of l)Owlders and till that the line; of the moraine could well be 
brought farther south than it is plotted, without doing violence 
to the facts. The case in New Jersey seems similar to what is 
known in Ohio and elsewhere, viz. : that the moraine does not 
mark the southernmost extension of the ice-sheet, but only the 
first halting place in its northward retreat. A clearer differenti- 
ation of the earlier from the later drift is needed before we can 
be sure of its duplex character. 
SCI'T'OSKI) (rI-.\CI.\T. Man in SoITlIWESTKHN Oni(». 
By FitANK Lk\kuktt, Cliicago, 111. 
The vast majority of so-called palaeoliths* in this country are 
found on the surface or in talus, but few being even claimed hy 
their discoverers to have been imljcdded in the undisturbed deposits, 
either of glacial or of post-glacial age. The great preponderance 
of such stones on the surface naturally leads to skepticism as to 
the authenticity of the alleged finds in undisturbed glacial depos- 
its. The interpretation of the age and method of imbedding of 
those reported to be in undisturbed deposits should, therefore, be 
supported by an array of evidence such as will leave no room for 
doubt as to its correctness. In few, if any, cases has a find been 
subjected to such a critical examination as would dcA^elop evi- 
dence of a conclusive nature. In the case of the finds in south- 
western Ohio, where I am personally acquainted with the character 
of the deposits the conditions are as follows: 
The Madisonville chipped stone was discovered by Dr. iMetz in 
"••\Mr. W. II. Holmes has demonstrated that a series of chippings 
similar to the so-called pahroliths are made in great numbers in the 
manufacture of modern neoiitliif implements. The so-called pahv- 
oliths, like tl)e rejects among ne()liths,show no signs of use. The pre- 
sumption is that ail rudely chip|)ed stones tiiat have been found are 
neolithic rejects, and strong evidence to the contrary is n>(|uired in 
every individual case where pfiheoliths are claimed. 
