Geological magazine . y around Ollerton (Mem. Geol. Surv.), 1911, p. , p. , p. 73. Geology of the Country aroundLincoln (Mem. Geol. Surv.),1888, p. 194. Geology in the Field, pt. iii,1910, p. 491, and MSS. MSS. and Home Office Becord. MSS. Bep. Brit. Assoc, for 1880,p. 104. Geology of the Country aroimdLincoln (Mem. Geol. Surv.),1888, p. 97 ; and Proc. YorksGeol. and Polytech. Soc,1891-4, p. 25. LincolnshireWater Supply ( Surv.), 1904, p. 108 ; andThe Eastern Extension of theMidland Coal-field ( Institute of MiningEngineers), vol. xii, p. 518,1896-7. Lin
Geological magazine . y around Ollerton (Mem. Geol. Surv.), 1911, p. , p. , p. 73. Geology of the Country aroundLincoln (Mem. Geol. Surv.),1888, p. 194. Geology in the Field, pt. iii,1910, p. 491, and MSS. MSS. and Home Office Becord. MSS. Bep. Brit. Assoc, for 1880,p. 104. Geology of the Country aroimdLincoln (Mem. Geol. Surv.),1888, p. 97 ; and Proc. YorksGeol. and Polytech. Soc,1891-4, p. 25. LincolnshireWater Supply ( Surv.), 1904, p. 108 ; andThe Eastern Extension of theMidland Coal-field ( Institute of MiningEngineers), vol. xii, p. 518,1896-7. LincolnshireWater Supply ( Surv.), 1904, pp. 153-4. MSS. 256 Bernard Smith—Green Keuper Bmement Beds poorly represented, and beds of marl so well developed, that it wasfound almost impossible to define where the marls passed into Water-stones. A division was made, however, upon other evidence. TheBunter Sandstone was of the usual type for the district, and containedpebbles as high up as the first 8 or 10 Details of the Lincoln (Boultham) boring for water were kindlysupplied me by Mr. Henry Preston, The interpretation ofthis section becomes clear if we bear in mind the character of the in Nottinghamsliire and Lincolnshire. 257 Rampton Beds. At Lincoln the Green Beds are well developed, butthe lithology of the normal Waterstones is so similar to that of theKeuper Marls that they were thought to be absent. This led to thecoarse red sandstone (some beds pebblj-), below the Green Beds, beingassigned to the Keuper Sandstones—as I think, quite fact that water was struck at 1,561 feet, and that no cores werethen obtained until a depth of 1,577 feet was reached, also bears outmy interpretation, for it frequently happens that there is a strongrush of Bunter water, which washes out the loose sandy top of thePebble Beds, when the Green Beds are passed through in borings. It has been stated ^ that in Lincolnshire the Triassic beds form oneseries displ
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