NOTES AKD QUEEIES. 
113 
It seems desirable to place on record the discovery of specimens like tlie 
above, even though they may add nothing to the evidence on the question 
of human antiquity. — I am, yours, etc., Wm. PjiNGELLT. 
Lamorna, Torquay. 
[The implement which I have drawn above, from the specimen kindly forwarded to 
me by Mr. Pengelly, appears to me to present the singular appearance of having been 
mannfactm'ed out of one of the large pointed implements of the Drift of the Amiens and 
Hoxne pattern. All the portion from a, d, b, e, a, is smoothed by wear or friction, 
while the lines of fracture in the remaining portion, d, b, e, c, d, are sharp and fresh, of 
subsequent workmanship, but not of recent fabrication. — Ed. Gf.ol.] 
Mammalian Eemaiks at Dulwich. — In the 5th volume of the ' Geo- 
logist,' page 302, Mr. A. Bott announced the discovery of the tooth of a 
mammalian animal from the Woolwich beds near Dulwich. 
Since the publication of that notice, Mr. Bott has kindly placed at my 
disposal a most accurate and beautiful photograph of the tooth in question. 
I regret very much that a careful examination of it does not permit me to 
decide with any certainty on the generic position of tlie animal to which it 
belonged. I consider the tooth in question to be a canine ; and after a 
comparison between it and the Corypliodon of the Lower Eocene of Eng- 
land and France, think it highly probable that it may have belonged to 
that genus. The identification, however, of any species of herbivorous 
mammal by means of one solitary canine tooth is exceedingly to be de- 
precated. — C. Carter Blake. 
Extent of the Drift. — The low country in the east of England, north 
of the Thames, and all Wales, is more or less covered with drift ; but the 
south of England, the Wcalden area especially, and the country south of 
the Bristol Channel, is in general destitute of it, except at very low 
levels on and near the shore at Brighton, Selsey Bill, etc. On both sides 
of the valley'of the Firth, and inland over the whole of Scotland, there are 
numerous indications of glacial action, both in the older boulder-clay, 
gravel, and later boulder-clay and gravels that more or less cover the 
country, and in the frequent striation of the rocks visible where the drift 
has been freshly cleared. By the Firth Professor Kamsay has observed 
these striations to run roughly from east to west in the main line of the 
valley; and north of the Grampian mountains, Professor Jamieson states 
that they generally follow the great slopes of the country on the east and 
west sides of the chief watershed. These striations, Professor Ramsay 
thinks, were probably formed at a time when the whole country was cased 
in ice, like the north of Greenland at the present day, and during the period 
in which the older boulder-clay was formed. This was afterwards sub- 
merged, and the younger drift deposited ; and on the re-emergence of the 
land, a second set of glaciers, of smaller sizo, filled many of the valleys. 
From the great Laurentian chain to the banks of the Ohio, the central 
plains of North America are more or less covered with boulder-clay and 
drift, often several hundreds of feet in thickness. When removed, the rocks 
on which those deposits rest are found to be very generally grooved and 
striated ; the striations running more or less from north to south. Ex- 
amples are everywhere to be met with in that region ; but these occur- 
rences have been more especially described near the Falls of Niagara, on 
the shores of the Hudson, the eastern flanks of the Catskill Mountains, 
and along the side of tiie escarpment from north to south up to the high 
minor gorge that traverses the range from east to west ; and by Mountain 
House, nearly 3000 feet above the sea, the striations bend round and cross 
the watershed, as if, according to Professor Hamsay, when the land was 
submerged to a certain level, the ice, previously grating along the side of 
YOL. VI. Q 
