JET. 80.] PLATEAU IMPLEMENTS. 363 



the evidence of use to any one accustomed to the usual forms of 

 flints is unmistakable. As far as I can yet judge, the early 

 savage only had two ideas in the selection and use of these con- 

 veniently shaped stones, viz., hammering and scraping and this 

 is just what one would have expected. Some years since, the 

 late Professor Leidy gave me a stone scraper which was used 

 by a tribe of North American Indians for dressing buffalo-skins : 

 it was an ordinary smooth quartzite pebble, split in half with 

 the thin sharp edge carefully removed, exactly like the plateau 

 Eocene pebbles described in your paper. 



The highest point from which these plateau forms have as 

 yet been found is 486 feet, on the summit of the hill beyond the 

 rifle range: there is, however, another patch of gravel, 510 feet, 

 which I have not yet had an opportunity of searching. With 

 kind regards, yours very truly, H. P. BLACKMORE. 



J. Prestwich to Sir J. Evans. DARENT-HULME, 17 'th AprU 1892. 



MY DEAR EVANS, It was very pleasant to me to go over 

 your route and recall to mind all the places we had visited to- 

 gether. St Acheul must exhibit a melancholy change from what 

 it was when we first knew it. I have done no field work yet, 

 but am waiting for fine weather to visit two new localities dis- 

 covered by Mr Bullen. 1 Mr Hale, jun., has come over from the 

 Malay Peninsula with a store of curios of all sorts. 



Dr H. P. Blackmore to J. Prestwich. SALISBURY, 3rd May 1892. 



DEAR PROFESSOR PRESTWICH, Enclosed you will receive a 

 sketch of the implement from Burroughs Hill : the shaded part 

 represents the natural crust of the flint. 



Mr Bullen has very kindly sent me his Preston Hill specimen 

 for inspection, and I am very glad to have seen it. It is much 

 more finely worked and aged than the one from Burroughs 

 Hill, but I have learnt to pay but little notice to mere surface 

 appearance as far as age is concerned, for many of the later Drift 



1 Rev. E. Ashington Bullen, then Vicar of Shoreham, Kent. 



