part 2] INFEBIOB OOLITE OF THE CBEWKEBHE DISTRICT. 147 



local species were described in his communications tirst to the 

 Dorset Field Club 1 and then to the Pakeontographical Society. 2 



In the early eighties Mr. S. S. Buckman explored the rocks of 

 the district, particularly around Crewkerne and Haselburv Plucknett. 

 The brachiopods were dealt with by Mr. Buckman in 1882, and as 

 the species were allocated to their zones and localities, the first 

 indication of the zones of the district is thus obtained. 3 Other 

 brachiopods were dealt with by him in 1910 * and certain ammonites 

 in his Monograph. 5 



W. H. Hudleston, in his well-known monograph, gives some 

 particulars concerning the section at ' Drympton ' (Drimpton), and 

 a fairly-detailed account — accompanied by a ' profile ' — of one at 

 Haselburv (see p. 16-5 of the present paper). 6 



In 1891 a party of the Somerset Archaeological & Natural 

 History Society visited Crewkerne, and the late H. B. Woodward 

 contributed some ' Xotes on the Geology of Crewkerne.' ~* The 

 information that he o-ave concerning the rocks under consideration 

 appeared again in 1894 — amplified and accompanied by a ' List of 

 Fossils from the Inferior Oolite Series near Crewkerne.' b 



In 1914 some members of the Geologists' Association of London 

 visited the district, and saw the quarries at the Misterton Lime- 

 works and Manor House (North Perrott), and Slade's Quarry — 

 also at North Perrott. 9 



(iii) The lower and upper limits of the Inferior 

 Oolite Series. — The division-line between the Lias and Oolite is 

 now generally drawn between the deposits of moorei (Lias) and 

 aalensis (Oolite) hemerae. As the deposits of both these hemera; 

 are sand in this district, and as sandy matter continued to be 

 deposited until the close of the Ancolioceras hemera, the line of 

 demarcation between Lias and Oolite— as in the case of the Burton- 

 Bradstock-Broadwindsor District — is not well marked. 



The bulk of the Yeovil Sands is of dumortierice-muorci hemera'. 



The base of the Yeovil Sands has been observed by Mr. S. S. 

 Buckman at White Lackington Park, near Ilminster, where it 

 rests on an 'arenaceous marl-bed' 10 of clisjyansi hemera. 



Above the Inferior Oolite comes the Fuller's Earth. 



In the district extending from Burton Bradstock, near Bridport, 



1 Proc. Dorset Nat. Hist. & Ant, F. C. vol. i (1877) pp. 73-88 & pis. i-iv. 



2 ' British Fossil Brachiopoda ' Monogr. Palaeont. Soc. Suppl. vol. iv, pt. 2, 

 no. 2 (1878) ; & Suppl. vol. v. pt. 3 [Conclusion",, 1884. 



3 Proc. Dorset Nat. Hist. & Ant. F. C. vol. iv (1882) pp. 1-52. 



4 Q. J. G. S. vol. lxvi (1910) pp. 99 et seqq. 



5 'Ammonites of the Inferior Oolite Series ' Monogr. Palaeont. Soc. Suppl. 

 (1905) pp. lxvii, lxix, lxx. 



' The Inferior Oolite Gasteropoda ' Monogr. Palreont. Soc. pt. i (18S7) 

 pp. 39-41. 



' Proc. Somerset Arch. & Nat. Hist. Sec. vol. xxxvii (1892) pp. 60-69. 



8 'The Jurassic Bocks of Britain, vol. iv — The Lower Oolitic Bock?- of 

 England (Yorkshire excepted) ' Mem. Geol. Surv. 1894, pp. 69 71. 



9 Proc. Geol. Assoc, vol. xxvi (1915) pp. 74-76. 

 10 Q. J. G. S. vol. xlv (1889) p. 450. 



Q. J. G. S. No. 291. ai 



