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mentioned, and Nouvelles. They flow in narrow valleys or 

 ravines about eighty feet deep. The works are now completely 

 filled in and covered over by the refuse after the flint had been 

 extracted, and by clay and sand subsequently washed in. 



A report was drawn up in the year 1867 by a committee 

 appointed to watch the cutting of the railway in that year, in 

 consequence of the discovery of human bones in the field called 

 the Camp a Cayaux. These bones were found to have no 

 relation to the other more important remains that the railway 

 soon laid bare. The committee was composed of M. Houzeau 

 de Lehaie and two other gentlemen. Their report gave a 

 good description of the geological strata, and engravings 

 of the various types of implements. Human relics 

 were found of two quite distinct periods, both pre- 

 historic; the more modern are those in connexion with 

 the extensive works and quarries in the chalk, chiefly near to 

 the ravine of La Trouille, and covering an area of upwards of 

 fifty acres now spread over with flints, blocks of chalk, clay, 

 and refuse of all kinds from the quarrying of the rock. The 

 more ancient are a few rudely chipped implements of the drift 

 type found in connexion with bones of extinct mammalia, and 

 in a deposit laid down before the surface of the country had 

 obtained its present shape. 



The newer or neolithic weapons of the excavations are 

 found absolutely in cart-loads. From their shape it is evident 

 that they belong to the age of polished stone, but they 

 appear to have been only chipped into form at this 

 manufactory, and polished elsewhere. A great many in- 

 struments of deer horn, which appear to have been 

 used as hammers, a few bone implements, fragments 

 of coarse pottery, and gritstone anvils, and grindstones 

 or millstones for grinding corn, were found in the excavations 

 amongst the refuse ; also bones of several wild animals now 

 living in Europe ; also portions of the skeletons of dog, cat 



