216 EXCAVATIONS AT DEWLISH. 



questions than we have solved. It is still doubtful whether 

 in this southern region Elephas meridionalis may not have 

 existed after Preglacial times, and whether the elephant- 

 trench may not therefore correspond in age with the curious 

 Interglacial deposits with a southern fauna and flora, of the 

 Hampshire and Sussex coasts. This can only be settled 

 by the discovery at Dewlish of a more varied fauna than we 

 have yet been able to obtain. 



The relation also to the old River Solent, and to the 

 physiography of a wide area, still needs consideration. Here 

 it may be pointed out that the Devil's Brook, though only a 

 small stream of short course, is one of the ancient rivers which 

 rise on the Jurassic plain, cut straight through the escarp- 

 ment of the Chalk, to fall into an East and West river occupy- 

 ing the centre of a Tertiary syncline. In short, the Devil's 

 Brook probably began to flow as far back as Miocene or 

 early Pliocene times, when this area was first raised above 

 the sea. In its history it is equivalent to the northward 

 and southward flowing streams, thrown off to the right and 

 left by the uplift of the Wealden axis. 

 Sample A. Close to road, (see transverse section II.). 



A fine pale-buff dust, with a few minute black 

 specks. 



At least 90 per cent, soluble in weak acid. 



Undissolved shows numerous broken sponge-spicules and 

 grains of chalk. 



Residue, fine quartz-grains mainly angular, a few minute 

 flint-chips, grains of glauconite, some silicious sponge- 

 spicules, occasional manganese grains, and flakes of mica. 

 Sample B. Close to road. 



Buff calcareous sand and flint-gravel. 



Sand-grains angular, of moderate size, mainly quartz, but 

 much flint ; many sponge-spicules. 



About 20 per cent, soluble in weak acid. 



Residue, sand-grains of moderate size and rarely large 

 (all these latter are quartz and rounded), flint-chips, and 

 glauconite grains. 



