192 THE GEOLOGICAL STRUCTUEE OF THE 



exposures it is by no means easy to construct an intelligible 

 section of the Inferior Oolite in this remarkable hill." 



In 1889, one of us (S. S. Buckman),^ following somewhat 

 on Mr. Walker's suggestion, compared both the brachiopods 

 and the ammonites of Dundry, Dorset, and the Cotteswolds. 

 He came to the conclusion that Dundry was more truly an 

 outlier of the Dorset district than of the Cotteswolds, and 

 he theorized as to the manner in which Dundry, during 

 an interval of Jurassic history, might have been cut off from 

 the Cotteswold area. 



In the early part of 1892 the same writer^ gave an 

 abridged section of the Inferior Oolite of Dundry. He 

 noticed ' the Ironshot,' * the White Bed below the Iron-shot,' 

 and ' the Nodular Bed.' 



In 1893, as one result of the work done by us for the 

 present paper, S. S. Buckman^ gave an outline section of 

 the upper part of Dandry Hill, to correlate its beds with 

 Dorset. 



In 1894 H. B. Woodward furnished a short account of the 

 Dundry beds in his Survey memoir,^ but he only made the 

 following divisions : — 



f5 



Buildmg or Freestone beds. ") _ , , . ^, , . 



T^ ^ > Zone of Amnwnitci^ Farknisoni. 



Kagstones. ) 



Ironshot Limestones. ) Zones of Ammonites Humphrie- 



Midford Sands. ) sianus and Mnrchisoncc. 



In 1896 the authors of tlie present communication pre- 



^ ' The Relations of Dundry with the Dorset -Somerset and Cotteswold 

 Areas during part of the Jurassic Period,' Proc. Cotteswold Nat. F. Club, 

 vol. ix., pt. iv. (1889), p. 374. 



- 'Inferior Oolite Ammonites,' Pal. S'ot-., vol. xlv., p. 293, issued for 

 1891. 



3 'The Bajocian of the Sherborne District,' Quart. Journ. Geol. Sac, 

 vol. slix. (1893), p. 508. 



4 Mem. Geol. Surv., ' The Lower Oolitic Rocks of England,' in 'The 

 Jurassic Rocks of Britain,' vol. iv. (1894), p. 99. 



