Formations of the Hampshire Basin. 123 



Division of t/te Strata. 



The strata which compose this coast section admit of a divi- 

 sion into five groups : — 



1. The upper freshwater. 



2. The upper marine. 



3. The lower freshwater and intercalated brackish-water beds. 



4. The estuary series. 



5. The Barton or true lower marine strata. 



The Upper Freshwater Formation 



consists of alternations of sands, clays, and marls which attain a 

 thickness of about 20 feet. 



No. 1. White sand striped with pale yellow bands; rises 

 about a mile to the east of Hordle House, and runs out near 

 Mead End : it is well seen in situ near a foot-path up the cliff 

 known as " Paddy's Gap." We found no fossils in this bed : it 

 measures from 6 to 9 feet. 



No. 2. Dark greenish marl striped with fawn-colour; contains 

 layers of shells and several bands of lignite from 1 to 2 inches 

 in thickness. The upper shell- seams contain Paludina lenta y 

 Lymnata longiscata } and Melania. The lower shell-seam contains 

 immense numbers of Unio Solandri, with a great quantity of small 

 dark seeds, Carpolithes ovulum, Brong., C. thalictroides, Brong. : 

 about 3 feet 6 inches. 



No. 3. Green marly clay, very tenacious, having in places a 

 bluish tint. The upper part of this bed contains shelly seams. 



Paludina lenta. Lymnaea longiscata. 



Melanopsis carinata. fusifonnis. 



Planorbis lens. Cyclas exigua. 



The os calcis of a mammal of an unknown genus was found 

 here, which is now in the cabinet of the Marchioness of Hastings ; 

 the green clay measures about 10 feet. 



The Upper Marine Bed. 



No. 4. Brownish -yellow sand. This bed was much covered up 

 at its origin, and throughout nearly its entire course, at the time 

 of my visit, and was only exposed at one place, to the extent of 

 about 10 yards. By digging, my collector ascertained that it 

 rises nearly opposite to Milford, and runs out of the cliff a little 

 to the westward of Hordle House. According to Mr. Searles 

 Wood, it rises a few paces westward of a ravine situated half a 

 Ddik from Milford, and occurs at an elevation of 10 or 12 feet 

 above high-water mark, with a thickness of only 9 or 10 inches, 

 and only traceable for 40 yards. Mr. Frederick Bdwards, of 

 Hempstead, so well known for lus unrivalled cabinet of Hemp- 



