556 MESSES. JUKES-BROWNE AND W. HILL ON" THE LOWER PART 



clinks under the hammer, and has a yellowish tinge on the weathered 

 surfaces ; no one would at first sight identify this with the Chalk- 

 marl of Cambridgeshire, but its position is sufficient proof of its 

 being on the same horizon, and it is similar to the hard blocky chalk 

 of Feltwell and Hockwold Grange. 



The section exposed at Stoke Ferry is as follows (fig. 3) : — 



Eig. 3. — Section at Stoke Ferry, partly seen in the quarry, and 

 partly proved by boring. (Scale inch to 1 foot.) 



feet. 



Soil and gravel, about 4 



Hard whitish chalk passing down into 

 greyish chalk 11 



'"Tough grey sandy -looking chalk becoming 

 harder below and containing many 

 yellowish phosphatic nodules near the 

 base, where it passes into a whitish 

 chalk mottled and patched with grey. . . 5 



Grey Chalk 



Totternhoe 

 Stone 



<Chalk-marl 



Grlauconitic 

 marl 



43-ault 



Hard whitish chalk, without definite 

 bedding-planes and weathering to a 

 rough lumpy surface (Chalk -marl) ... 



22 



Boring. 



Rubbly broken chalk 2 



Greyish shelly chalk in alternating harder 



and softer beds 14 



The same with buff-coloured stains or 



blotches 9 



k The same as above, but harder 3 



Softer greyish material with mottlings of paler 

 bluish-grey 



/Hard light buff-coloured chalk, shelly, streaked 

 J with black (? oxide of manganese) in the lower 

 1 4 feet 



vDull grey chalk, rather shelly, but not so hard 



Soft whitish marl with a harder lump here and 

 there, but mostly cutting like cheese 



{Rather hard greyish sandy marl with yellowish 

 streaks, containing glauconite grains and 

 small phosphatic nodules 



HI \ Stiff dark-blue clay proved to 



11 



2| 

 1| 



