Fossiliferous Deposit at Bielsheck. 



45 



With regard to the above list Mr. Reid remarks : ' If these 

 were all that were found at Bielsbeck, they are an exceptionally 

 poor set, which shows nothing as to climatic conditions. 

 There are only one or tw^o seeds of meadow plants among 

 them, and no dry soil plants.' 



Insects. — Besides the above, the deposit contains the re- 

 mains of beetles, but much of the material has not yet been 

 specificarlly determined. The following may be mentitxied : — 



COLEOPTERA. 



Donacia (sp. ?) (an almost complete specimen). 

 Hister (sp. ?) (elytron). 



Further Notes on the Deposits. — The Bielsbeck boner 

 bearing deposits apparently occupy a depression or hollow in 

 the Keuper Marl, of undetermined width, and it appears as 

 though this hollow is isolated and inclosed by the marl, though it 

 is just possible that it may represent a portion of a filled-in valley 

 or trench, the direction of which has not been traced. 



Scattered through the marl at various depths were angular 

 or slightly rounded black flints in large numbers, and these in 

 some cases formed a definite layer. Along with the flints w-ere 

 occasional pebbles of quartz and of sandstone (probably Car- 

 boniferous). None of these pebbles show^ed stri^ or other 

 indication of glacial action. 



The overlying gravel was mainly composed of flint and 

 chalk from the neighbouring Wolds, along with scattered 

 fragments of quartz, sandstone, etc. (like those found in the 

 underlying marl), and Gryphoea and other fossils from the Lias. 

 This gravel is the feather-edge of a wide fan, which can be 

 traced up to the mouth of a valley that drains from the Wolds 

 at Market Weighton. In the thicker parts of this gravel, 

 towards the mouth of the valley, other pebbles besides the 

 above have been detected, including the well-known porphyrite 

 which is characteristic of the upper part of the East Yorkshire 

 drifts. The wide extent and depth of this gravel suggests 

 that it has been spread out by floods from the melting ice, 

 when the ice-margin abutted upon the eastern slopes of the 

 Wolds. The present valley appears to be too short to supply a 

 stream powerful enough to spread a sheet of gravel of these 

 dimensions. 



[By a resolution of the Committee, the collections from the 

 recent excavations have been presented to the Hull Museum]. 



1908 February i. 



