Vol. 57.] WELL-SECTION AT DALLINGHOO (STJFFOLK). 285 



19. Note on a Well-Section at Dallinghoo (Suffolk).^ By the 

 Eev. EoBEKT Ashington Bulled, B.A., F.L.S., F.G.S. (Read 

 April 24th, 1901.) 



The well here described was sunk in the garden of Dallinghoo 

 Post-Office, near Wickham Market (Suffolk). Dallinghoo is about 

 4 miles north-west of Woodbridge, and about 161 feet above 

 Ordnance datum. The well is one of three bored by a water-finder's 

 advice. His counsels were successfully acted upon in two out of 

 the three cases, and this resuljb will probably help to keep the 

 superstition alive in that district. In .this Post-Office well water 

 was found at a depth of 79 feet. 

 The section shows : — 



Feet. 



Blue Chalky Boulder-Clay 53 



Reddish sand and gravel 1 



White sand and gravel 16 



Red sand and gravel 9 



Below this the boring was not continued. 



Mr. George R. Allen, of Wickham Market, the borer and builder of 

 the well, has carefully collected the fossils from the Boulder-Clay, 

 and has given me the boring measurements. 



Besides Gryphcea incurva and Ichthyosaurus sp. (vertebra) the 

 following fossils were found and were kindly identified for me by 

 Mr. E. T. Newton, F.E.S. :— ^ 



Ammonites {OpMoceras) raricostatus, Zieten. 

 A. (Cardiocerccs) excavatiis, J. de C. Sow. 



A, (Cosmoceras) Jason, Reineeke. 

 Belemnites ahhreviatm, Miller. 



B. Owenii, Pratt. 

 B. sp. 



In addition to these there is a concreted mass of indeterminable 

 Lima and Ostrea, too young for identification, probably assignable 

 to the Lower Lias. There are also large pieces of a dull-green 

 bituminous shale, containing numerous fossils, showing young 

 ammonites and brachiopoda {Discina sp.), and black shining objects, 

 possibly fish-scales. This shale burns with a bright yellow flame, 

 and gives off a disagreeable pitch-like odour. 



A mass of quartz-grains, cemented by a dull-brown ferruginous 

 material, is thought by Mr. Newton to be most probably Carstone. 



The fragment of Ammonites raricostatus is very much worn at the 

 upper (dorsal) surface and striated. Belemnites abbreviatus also is 

 more than usually flat on one side, and shows longitudinal striae. 



^ [This paper was read under the title ' Notes on Two Well-Sections ' ; but it 

 was subsequently ascertained that a description of one of them, namely, that at 

 Messrs. Jenner's Brewery at Southwark, had been drawn up by Mr. Whitaker 

 for publication elsewhere, of which fact Mr. Bullcn was not at the time 

 cognizant. — Ed.] 



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