THE SOUTH-EASTERN COALFIELD 389 



de-Calais Coalfield, and is the cause of the great wealth of 

 that basin. 



Apart from the usual Catamites, Cordaites, Stigmaria, Sigillaria, 

 and Lcpidodendron, Mr. Arber found various species oi N europteris 

 abundant at Waldershare, but less so at Fredville. The chief 

 species are N. rarinervis and N. schcuchzeri ; Alcthopteris lonchitica 

 occurred, and at Fredville A. Serli is numerous. 



The whole of these results are discussed by Mr. Arber in 

 a paper shortly to be read before the Geological Society of 

 London. 



The geological results of the two borings of Waldershare 

 and Fredville have been discussed by Prof. Boyd Dawkins, 

 F.R.S., in a paper read before the Society of Arts (Journ. Soc. 

 Arts, vol. lv. p. 450, 1907), in which the author endeavours to 

 correlate the Waldershare Grit with the Pennant Grit of South 

 Wales, and he determines the Lower Shales Series at Fred- 

 ville. It is, however, rash to base conclusions on such 

 insufficient evidence, and to assume a former physical con- 

 tinuity between the Grits of East Kent and those of South 

 Wales, more especially as at that time the plant remains had 

 not even been collected. 



Unfortunately, the bulk of the Mesozoic cores from Walder- 

 share have been destroyed or rendered useless by the loss or 

 mingling of the labels. This occurred at a time when it was 

 necessary to have police protection at the bore-hole, just before 

 entering the Coal Measures, and in the confusion the Jurassic 

 cores were badly damaged. For three weeks a watch was kept 

 day and night. The guard must have found the Bathonian 

 limestone a rather calcareous bed, though the Oxfordian Clays 

 must have been softer ; these big and heavy cores were arranged 

 on the floor of the shed, and were trampled out of recognition. 

 We look to Prof. Boyd Dawkins for the account of this part of 

 the section, for he was Geologist in charge and he alone has the 

 necessary material. 



The Neocomian and Jurassic cores of the Fredville boring are 

 fortunately undisturbed : in Boyd Dawkins' paper, above referred 

 to, they are dismissed in the comprehensive term " Oolites," 

 and 10 ft. are attributed to the Lias, but as no description of the 

 lithological character of the ground is there given, an outline 

 of the section may be interesting. When the fossils have all 

 been determined, an authoritative description of the section 



