231 



The quarry in question, which has not, I think, been worked 

 for at least twenty years, is on the northern face of the Upleatham 

 outHer, about one mile south of Marske and 500 feet above sea 

 level The cause of the discontinuance of the Avorking of the 

 quarry will be evident to any one inspecting it, for tlie massive 

 sandstones are false-bedded and very irregular, and blotched with 

 ferruginous concretions, some of which are solid little balls of iron 

 peroxide, and others hollow box-stones. The sandstone is over-laid 

 also in parts by glacial drift, and to a more liarniful extent by 

 profitless shales and ironstones. Plants occur throughout the whole 

 extent of the quarry where the matrix is suitable for their 

 preservation, but I have obtained my finest specimens from the 

 refuse thrown aside by the workmen in the process of exploiting 

 the sandstone. 



Most of the specimens which 1 obtained on my earlier visits 

 I was able to identify without much difficulty, but one form was 

 clearly distinct from any plant mentioned by ]Mr. A. C. Seward in 

 his " Jurassic Flora of Yorkshire," or figured and described in any 

 work which I was aljle to consult. I therefore asked IMr. Seward 

 if he would look at this plant for me, a request to which he very 

 readily assented. On my sending the plant to him, he pronounced 

 it to be a new species of Dirtyozarintex, a genus wliich had only 

 been recorded previously from India, Japan and Bornholin. Mr. 

 Seward Avas much delighted with this very iateresting addition to 

 the Bajocian Flora of Great Britain, and proposed that he and I 

 should prepare a joint pa])er for the Geological Society of London 

 on the new plant and the Marske Plant Bed generally. Ultimately, 

 however, it was arranged that he should first describe the new 

 plant, leaving me to deal Avith the more general subject in a 

 subsequent paper. Accordingly Mr. Seward, on February 25th, 

 1903, read to the Geological Society a paper " On the Occurrence 

 of Dictyozarnites in England," in which he named the new species 

 Dictyo7:amifes Hairelli This paper is printed in the Quarterly 

 Journal of the Society issued on May 22nd, 1903, pp. 217 to 233. 



The following is a list of the sjiecies which I liavo up to the 

 present time obtained from Marske : — 



Equisetites columnaris, Brongn. 

 Cladophlebis denticulata, Brongn. 

 Tseniopteris vittata, Brongn. 



„ major, Lind. and Hutt. 



Sagenopteris Phillipsi, Brongn. var. major, Seward. 



