170 
granites; black dolomites, greenstones and basalts, all doubt- 
less derived from the boulder clays which cap the high land 
bounding the valley. There are no records of bones of extinct 
mammalia or flint weapons having been found in these 
sands or gravels. Occasionally a black deposit is found at the 
top of the gravel, with numbers of the common hazel nuts 
and within the gravel fine logs of oak timber have not un- 
frequently been found. At the present moment three of these 
]ogs have been found lying quite near each other, and another 
was found a few years ago about 300 yards to the south of 
these. The three logs were under 6 feet of loam and 2 feet 
of very clean red gravel ; they were denuded of bark and the 
smaller branches all gone, but they were perfectly sound^ 
purplish black and very heavy ; only one was exhumed and 
it measured 25 feet long and 2 feet diameter at the bole. 
All the holes from which branches were torn were filled 
with clean gravel. 
It is quite probable that they have been originally washed 
out of beds of peat from the high moorland and brought 
down by floods to their present position, but it must be 
referred back to the times when estuarine waters occupied 
the low lands of Lancashire and Cheshire to the very base 
of the hills very far to the East of Manchester. 
Mr. Plant exhibited and described the finding of a large 
flint-core in the alluvial deposit near Ordsall Lane Railway 
Station. The river deposits partake of the same features as 
are described above, and the flint-core was found at the 
bottom of a bed of loam nearly five feet from the surface. 
Mr. Plant also exhibited fine remains of coal period 
reptiles, a lower jaw of “ A nthracosaurus” 15 inches long, 
dermal plates of Loxomma , with a portion of a jaw having- 
five erect teeth, and a scale of a new fish MccjaUclithys 
coccosteus, and stated that at a future meeting he would 
exhibit and describe a number of other new reptiles and 
fishes in his collections from the Manchester coal field. 
