438 Dr. T. Wriffht on the Freshwater and Marine 



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upper clay band is about 2 feet in thickness, and the lower sandy 

 stratum about 8 inches. 



The clay contains fine specimens of Unio Solandri : laminated 

 masses of this band can be traced through the entire bed. 



I have before me a mass of the iron-sand resting on the clay ; 

 it contains immense numbers of Melania, new sp., Paludina 

 lenta, Cyclas exigua, and a number of bright green-coloured 

 seed-vessels of Chara [Gijrogonites). These seeds are met with 

 throughout the sand and clay. 



No. 6. Green marls and clay ; form a conspicuous bed as they 

 rise on the shore eastward of Hordle-lane, and run out of the 

 chflF beyond No. 5. The clay is stiff and tenacious, and is in 

 some parts mottled with red and brown. Contains few shells. 

 Paludina angulosa is the only species Mr. Keeping ever recollected 

 obtaining from it. Thin layers of lignite, from 2 to 3 inches in 

 thickness, occur in the upper part. It measures about 12 feet. 

 A bright green marl forms the base of the bed, which is as re- 

 markable for the number of shells it contains, as the upper part 

 of the bed is for its paucity. 



No. 7. Bright green marls, which form the base of the pre- 

 ceding, but are distinguished from it by their fossiliferous cha- 

 racter, containing immense numbers of Potamomya gregaria, 

 which lie in seams. The shells are well preserved, but the valves 

 are mostly separate : the marls measure about 18 inches. 



No. 8. Lymnaean limestone, similar to the beds I have described 

 under this name in the Isle of Wight. It rises on the shore, 

 about 200 yards east of Hordle-lane, and forms a well-marked 

 band in the cliff. It is a cream-coloured, pinky, calcareous 

 marl, slightly indurated where it has been exposed for some time 

 to the air, and contains an immense quantity of lacustrine shells, 

 not, in general, well preserved. Many blocks however enclose 

 very good specimens of the following, with the shell entire : — 



Lymnsea longiscata, Brong. Planorbis euomphalus. Sow. 



fusiformis. Sow. rotimdatus, Brong. 



columellaris. Sow. lens. Sow. 



pyramidalis, Sow. 



Several of the above species lie clustered together in a block 

 before me, about 3 inches square. In some parts of its course 

 it contains great numbers of (Gijrogonites) Chara medicaginula. 



Inferiorly this bed reposes on a black carbonaceous clay con- 

 taining lignite. It is remarkable, that both in these cliffs and in 

 the Isle of Wight, the beds are often separated by lignite bands. 

 The cream-coloured shelly marl measures from 4 to 9 inches in 

 thickness, and the lignite band and clay from 2 to 4 inches. 



No. 9. Greenish marly clay, which in that part of the bed 

 exposed to the air hardens into calcareous nodules, which are 



