ON THE SHELL-BEARING DEPOSITS AT CLAVA, AND OTHER PLACES. 495 



washed nearly all away and was difficult to go 

 91 per cent. ; sand, 6 per cent. ; gravel, 3 per 

 than a pea. 



In this case the clay was washed through a 

 the inch : all the others, with the exception of No 

 a sieve of ninety-six meshes to the inch, which 

 finer portions of the sand to pass through, and 

 percentage to the mud. 



Floats contained a little vegetable matter, 

 few fossil remains. 



Crustacea. 



through the sieve ; mud, 

 cent. ; none much larger 



sieve of ninety meshes to 

 . 7 bore, were put through 

 would allow more of the 

 give a somewhat higher 



and mica scales, and a 



Order Osteacoda. — Cytheridea punctillata, Brady (1). 

 Family Pohjcopidoe. — Polycope orbicularis, G. 0. Sars (1). 



Rhizopoda. 

 FORAMINIFERA. — Sub-family Lageidnce. Lagena sp. (a fragment). 



No. 7 Bore. — Depth, 10 to 11| feet ; ' blue sandy clay ' ; this sample 

 was somewhat bluer than the above, dissolved readily, but more difficult 

 to pass through the sieve ; mud, 24 per cent. ; sand, 72 per cent. ; gravel, 

 4 per cent. ; none of it much larger than a pea. 



Floats. — Small in bulk, a little vegetable matter, much mica scales, 

 and a little sand. 



Crustacea. 



Order Ostracoda. — Cytheridea papillosa. Bosquet, jun. 



Rhizopoda. 



Order FoRAMiNiFERA.-^Sub-family MilioUnince. Miliolina sp. (one 

 imperfect). 



No. 7 Bore. — Depth, 14 to 15 feet ; ' sand and a little fine gravel ' ; 

 sample of sand ochre-coloured, when dry adhering much together and 

 taking some force to break it up ; dissolved readily in water ; mud, 18 

 per cent. ; sand, 78 per cent. ; gravel, 3 per cent. 



Floats. — A little vegetable matter, a little sand and mica scales ; a 

 lump of reddish brown clay, upper part taken 233 yards west of main 

 section ; no depth given ; bottom part said to contain small round stones ; 

 mud, 98 per cent. ; fine sand, 2 per cent., with a few grains of coarser 

 sand ; no gravel large or small ; no organic remains. 



Quantities of clays received and examined from Clava bores : — 



