﻿V^ol. 64.] THE FOSSILIFEEOTJS SILURIAN ROCKS OF TOETWOETH. 519 



chiefly of stiif clay, so that it is clear that, as one would expect, the 

 Daniel's-Wood Llandovery extends farther eastwards. The only 

 fossils, in addition to those mentioned in the previous list, that 

 we have found, are : — Palceocyclus prceacutus, which occurs in scores 

 on certain slabs, Strojohomena arenacea, and Cyclonema cor alii. The 

 Favosites mentioned in the previous list is (we believe) Favosites 

 Hisingeri. 



The Museum of Practical Geology (Jermyn Street) contains the 

 following fossils preserved in yellow sandstone, and labelled ' west 

 of Crockley's Farm ' : — 



TalcBocyclus i^rcBoxuUts. 

 Coelospira hemispherica. 

 StricJdandinia lirata. 



Leptcena rhomhoidalis. 

 Orthis elegantula. 

 Tentaculites anglicus. 



These probably came from Daniel's Wood. 



(cZ) The Middlemill and Woodford Areas. 



Several exposures of red micaceous sandstone occur in the neigh- 

 bourhood of Woodford Farm, but we found no fossils in them. 



Through the kindness of Lord Fitzhardinge, we have been able to 

 open up the exposure of highly-fossiliferous Llandovery at the old 

 Horsley or Middlemill Quarry. The fossils, chiefly corals, had 

 previously been obtained in somewhat soft, brown, sandy, greatly- 

 weathered rock, but the cutting-back of the face of the quarry 

 showed that this material was really a pink sandy limestone in a 

 decalcified state.^ The rocks dip at 50° north-north-westwards, 

 and the section is as follows : — 



Thickness in feet inches 

 (4) Surface-material, crowded with blocks of highly- vesicular 



trap — — 



(3) Pink sandy limestone, in the main completely decalcified, 



crowded with large fossils and with scattered lapilli ... 2 9 



(2) More compact, pink, less gritty and less decalcified 



limestone, devoid of large fossils 9 



(1) Trap chiefly vesicular, but more compact near the top... — — 



Thickness of the sedimentary series 3 6 



We are able to add the following fossils, nearly all derived from 

 Band 3 in the above section, to the list given on p. 278 of the 

 previous paper : — 



Cyathophyllum sp. 

 Alveolites sp. 

 Cmiiies labrosus. 

 Heliolites parasitica. 

 Heliolites interstincta. 

 Favosites aspera. 

 Favosites Hisingeri. 

 Monticuliporoid. 

 Stromatoporoid. 



Anastr&phia deflexa. 

 Atrypa reticularis. 

 Ehynchonella decemplicata . 

 Rhynchonella borealis. 

 Cceiospira hemispherica. 

 Strophomena compressa. 

 Horiostoma globosum. 

 Cyrtoceras sp. 

 Orthoceras annulatum. 



^ This deposit is no doubt the one to which Weaver (Trans. Geol. See. ser. 2, 

 vol. i, pt. ii, 1824, p. 331) refers as having been found by the Eev. Dr. Cooke. ' 



