454 Proceedings of the Royal Physical Society. 



bit and the whole of the other. The first bit I washed was 

 about 4 inches square and less than 1 inch in thickness. 

 The contents were one valve of Astrarte comp^essa, a few 

 valves of Zecla pyyma:a, and a goodly number of Foraminifera 

 and Ostracoda. These I mounted on slides, and sent the 

 Foraminifera to Mr Henry B. Brady, who at once very kindly 

 named them, and the Ostracoda to Mr David Eobertson, who 

 as kindly named them, and to both my warmest thanks are 

 due for the trouble they have taken with them. 



List of Foeaminifera, determined by H. B. Brady, Esq., 

 F.E.S., December 1883. 



Miliolina seminulum, Linn. 

 Glandulina Icevigata, D'Orb. 

 Polymorphina lactea, TV. and J. 

 Cassidulina crassa, D'Orb. 

 Truncatulina lobatula, "Walker. 



Eotalia Beccarii, Linn. 



Polystomella striato -punctata, F. and 



M. 

 Nonionina scapha, F. and M. 



,, orbicularis, Brady. 



In all nine species. Of their character Mr Brady says : 

 " They are a starved lot from shallow water depth, certainly 

 not more than 100 fathoms — probably not more than 50 

 fathoms — all more or less arctic." 



Cytheridea sorhyana, Jones. 



,, papulosa, Bosg. (Young). 



,, punctillata, Brady. 

 Cytheropteron latissimum, Norman. 

 Cythere dunelvwiisis, Norman. 



List of Ostracoda, determined by David Eobertson, Esq., 

 F.L.S., January 1884. 



Cythere viridis, Miiller. 



,, mirabilis, Brady. 



,, concinTm, Jones. 



,, limicola, Norman. 

 Eucythere argus, Sars. 



In aU ten species of Ostracoda. As to their character, Mr 

 Eobertson says : " They are generally of a decided arctic 

 character, and much like those got in the deposits at Elie, 

 Errol, and Barrie. It is clear from the contents that this bit 

 of clay was of marine origin and much of the same character 

 as the glacial clays of Paisley and Glasgow." 



The other bit of clay was red in colour and much coarser 

 in grain. On being placed in water it dissolved readily, and 

 released its contents, which, being mostly seeds, immediately 

 floated, and were secured without difficulty. These Mr Eobert 

 Kidston very kindly undertook to get named for me, and has 



