Correspondence—Percy F. Kendall. 189 
incorrect, and Mr. Warren caused to bear a responsibility which there 
is no need for him to shoulder, I beg to state that the paper to which 
I refer will be found in Science Progress, No. 44, April, 1917, pp. 597— 
603. Itis entitled “ Scratches on Flints”’, and was written by me. 
On p. 247 (paragraph 6) of Mr. Warren’s paper a description is 
given of a large flake, the bulb of which is “cross-cut by the 
éraillure which was formerly supposed to be the exclusive character 
of the human blow’”’. Who is the unfortunate person who has been 
responsible for making such a palpably absurd statement as this ? 
Perhaps Mr. Warren can supply me with the needed information, 
but whoever made such a statement must be singularly devoid of 
even a rudimentary knowledge of flint fracture. Mr. Warren’s 
paper is, in my judgment, not calculated to help towards the 
solution of the serious archeological problems it purports to discuss. 
| J. Reip Morr. 
Fetruary 26, 1921. 
THE GLACIATION OF IRELAND. 
Srr,—I accept Professor Gregory’s implied reproof of my habit 
of ‘“‘ regarding views that’ I “do not accept as simple mistakes ”’, 
and plead in mitigation of any penalty that my article in the 
February GroLocicaL MaGazine is only the second time in twenty 
years that I have indulged in public controversy. I should be 
greatly interested if Professor Gregory would suggest any logical 
method by which I could indicate my dissent from opinions with 
which I disagree without regarding their author as mistaken. 
As to the general subject of the glaciation of Ireland, I am perfectly 
content to leave such of your readers as are interested to compare 
my criticism with what Professor Gregory deems an adequate 
answer. 
There is, however, one point which raises wider issues than those 
of Irish Geology. In answer to my observation that the Roscrea 
esker is not at the northern end of the mountains, but a few miles 
south-west of the southern end, he retorts that ““They”’ (the Roscrea, 
Clonaslee, Mount Mellick, and Maryboro’ eskers) “‘ are part of one 
crescentic series around the northern end of the range. Moreover, 
the term Sheve Bloom Mountains is sometimes used (e.g. Phillips 
[sic] Atlas of Comparative Geography, and the map used in Carvell 
[meaning Carvill] Lewis’ Glac. Geol. Gt. B. and I., 1894, opp. p. 83) 
to include the geological continuation of the range south-west of 
the Roscrea Gap’’. 
To make good this extended use of the name Professor Gregory 
does not appeal to his own map or to any authoritative map of 
Ireland, neither to Griffith’s nor the beautiful layered maps of the 
Ordnance Survey, but to Carvill Lewis’s little “ track-chart ”’ on the 
scale of 31°5 miles to 1 inch, in which—apparently to meet the 
exigencies of space—the lettering of “‘ Slieve”’ begins about 5 miles 
south-west of Roscrea, and, actually, to a half-crown school atlas! 
