540 Tin a mixtions of the Society . 



surrounds the peninsula. Sample taken below Nos. 8 and 9, 

 opposite Thorney Coastguard Station. 



11. Shore-sand. From the sands midway between No. 7 and 

 No. 12 above the " Selsey Beds " (No. 8). 



12. Shore-sand. From the shore opposite the oyster-beds 

 and Windmill, slightly north-west of the present Thorney Coast- 

 guard Station. 



13. Shore-sand. From the shore opposite Medmerry Farm, 

 between the Coombe Rock and the spit of Pleistocene mud 

 described by Mr. C. Eeid (Postscript, No. 9 ; also Nos. 8 and 10). 



14. Mud-deposit. Dug from the Pleistocene mud (" Clibs ") 

 exposed at spring-tide (Laminarian zone) opposite Medmerry 

 Farm. 



15. Shore-sand. From the shore of Bracklesham Bay opposite 

 Thorney Farm, and the now abandoned (old) Thorney Coastguard 

 Station. 



16. Focene-sand. From the interior of large and perfect shells 

 of Cardita planicosta, from a depth of two feet in the Bracklesham 

 Beds, uncovered at low water of spring tides in Bracklesham Bay. 



Besides the foregoing samples of material, we possess, and shall 

 examine systematically in due course, the thirty-six Artesian-well 

 samples of the strata of the Selsey peninsula to which reference 

 has been made. 



The presence of a large number of purely chalk Foraminifera 

 in the Selsey shore-sand is accounted for by the continual 

 throwing up and shattering upon the shingle, of hollow flints 

 (Spongidse) from the upper chalk (probably from the Isle of 

 Wight), and a description of the contents of some of these will 

 form a necessary termination to our completed study of the Fora- 

 minifera of the locality. 



It will readily be gathered from a glance at the foregoing 

 catalogue of material, that an exhaustive study of the Foraminifera 

 of Selsey Bill must occupy all the leisure that we can devote to it 

 for some years to come. Meanwhile we have made a preliminary 

 and necessarily somewhat cursory examination of the twelve 

 samples composing the above catalogue, with a view to ascertain- 

 ing, as far as is at present possible, the precise origin of the genus 

 Gycloloculina. 



The result of such examination is as follows : — 



1. Park Farm. Almost entirely the detritus of recent shells. 

 A few Nummulites, but practically no Foraminifera, recent or fossil. 



2. Mixon Mud. The coarse siftings gave Nummulites and 

 Alveolina Boscii in quantity, with small Eocene Mollusca, often full 

 of pyrites. The Nummulites frequently encrusted with Polyzoa 

 {H yd r actinia, etc.), showing that they have been washed out of the 

 matrix for some time. Large casts, in glauconite and quartzose, of 

 Miliolina cdveoliniformis, Biloeulina, Diseorhina (? parisiensis). One 



