181 



produced also a parallel break further on in the strata ; and that at one part 

 of this fissure (Rartestree) a stream of lava flowed up and sobdified, while at 

 another part (Shucknell) it pushed up a wedge of Ludlow rocks without 

 emerging itself. We may notice here that fig. 2, if continued to the N.W. for 

 two miles would pass through Bartestree Dike and Hagley Dome. 



SHUCKNELL HILL. 



This mass of Ludlow rocks is briefly described in the "Memoirs of the 

 Survey." The hypothesis that it was forced up through a fissure in the Old 

 Red Sandstone connected with the fissiire at Bartestree, explains the fact that 

 the directions of the trap-dike and the faulted edge of Shucknell are identical, 

 viz., from W.S.W. to E.N.B. The curious shape of the hill, and the remarkable 

 dislocation of its strata render it well worth a careful examination. In the 

 large quarry some fair specimens of Pkacops cavdatus may be found. 



PALEONTOLOGY. 



In a small isolated patch of rocks like "WooUiope, we cannot expect to 

 meet with the rarer fossils, which are usually found only where a large extent 

 of the formation reaches the surface and is naturally or artificially exposed. 

 There is no railway cutting in the district ; the harder beds however are left in 

 escarpments, as will be seen from fig. 2, and these have often been considerably 

 enlarged in quarrying for limestone or road metal, but many of the Wenlock 

 quarries have been long abandoned because of the superiority of the Howie Hill 

 Mountain Limestone. For exposures of the softer shaly strata we must hunt 

 in the lanes and gullies ; but there, as a general rule, the excavation is far too 

 slight to admit of many fossils being found. In an appendix is given a list of the 

 best localities for finding the fossils of the several beds ; the " Rlemoirs of the 

 Greological Survey " supplied the foundation of it, but the hst there given has 

 been verified, corrected, and enlarged by many personal visits and careful 

 inspections. 



The characteristic Upper Ludlow fossils are very common : Prior's Court 

 and the quarries in the Shucknell upcast may be especially recommended ; the 

 Aymestry rock will eveiywhere disappoint any one who has been accustomed 

 to geologise in this bed at Aymestry or Downton : Pentamerus galeatus is 

 common, but P. Knightii is very rare ; it may be foimd at Bodenham near Much 

 . Marcle, and I have seen it in road metal said to have been brought from 

 Shucknell ; its place is often supplied here by compact slabs of Rhynconella 

 Wilsoni. Nor again will the frequenters of the Leintwardine and Mochtree 

 quarries think much of our Lower Ludlow. I have never heard of star-fish being 

 found here ; the late Mr. Scobie, our first honorary secretary, found Graptolitea 

 under Backbury Hill ; I should like to discover the precise spot. Dormington 

 Wood might of itself supply a museum with the characteristic Wenlock fossils ; 

 corals are the chief feature in these quarries, but encrinites also, brachiopodoua 

 and other shells everywhere abound. The limestone underlying the persistent 



