E. B. Tawney—The Brockenhurst Bed near Lyndhurst. 159 
The position of the bed is however the same here as at Brocken- 
hurst, as shown by the succession of the beds noted above. 
We next moved to the west side of Cutwalk Hill, and excavated a 
little in the V. geminata zone sufficiently to prove the position of this 
bed, and collect some of its fossils. 
Callianassa Batet, Woodw. Bulla Lamareckii, Desh. 
Cancellaria muricata, 8. Wood. Pisania labiata, Sow. 
Rimella rimosa, Brand. Cerithium pseudocinetum, D’ Orb. 
Voluta geminata, Sow. Cytherea incrassata, Sow. 
Pleurotoma pyrgota, Kd. =H suborbicularis, Edw., MS. 
4 transversaria, Lam. Trigonocelia deltoidea, Lam. 
an Headonensis, Edw. Cyrena obtusa, Forbes. 
denticula, Bast. Psammobia estuarina, Edw. MS. 
5) 
Natica labellata, Lam. 
Using this as a datum-line, we began to excavate a pit which 
should have found the Brockenhurst bed about 14 feet below the last 
zone. We dug through 7 feet of unproductive greenish-brown clays, 
which became sandier below, and then found the Brockenhurst sandy 
bed as we expected. It was lying on an uneven eroded surface of 
the freshwater Lower Headon Marls, but was thin and poor in fossils. 
We obtained Voluta suturalis, V. spinosa, Ostrea ventilabrum, 
Cytherea Solandri var., C. incrassata, Corbula cuspidata. 
Among these are some of the most characteristic forms of the 
Brockenhurst bed, but it was found useless to expect a rich fauna 
from here, as the fossils were mostly represented by calcareous 
remnants, as at the outcrop of the equivalent bed at Brockenhurst. 
Though fully 7 feet deep, the pit was therefore abandoned. 
The freshwater Lower Headon Marl at this point of the hill has 
been much worked, as may be inferred from remains of old pits. Of 
fossils we noticed in it Lepidosteus scales and layers of Potamomya. 
It is a shelly bluish clay. 
The Rev. J. Compton informs us that the 200 feet contour-line 
passes close to where we excavated, while the top of the hill just 
exceeds the 3800 feet contour-line. We have therefore, about a 
hundred feet of beds from the Brockenhurst bed to the top of the 
hill. 
Examination of the hill-top showed us other old pits; these we 
found to have been marl pits. Theclay worked there is a stiff green 
marly clay with very shelly layers. We found Melania muricata in 
abundance. Mr. Keeping considers it as Osborne beds, and in this we 
agree. We have therefore a perfect insight into the structure of the 
hill. 
At the base all round the hill are the Upper Bagshot Sands; they 
may be seen in the ditch near the Swan, on the south side; better in 
the sand-pit west of the Forest View Inn, while these sands are the 
-water-bearing stratum of the Emery Down well. 
Above come the Lower Headon Shelly Clays, formerly much used 
for marling, and said to be 15 feet thick in the well shaft. Next is 
the marine Brockenhurst bed, quite thin here and only one foot at 
Brockenhurst ; above are clays unproductive of fossils for about a 
dozen feet, then the V. geminata clays, while the remainder of the 
