74
THE ESSEX NATURALIST.
that there is no locality given to any of them. A whitish
patina upon these twisted ovates of the Late Acheulean period
is sufficiently frequent to suggest the reflection that it must have
been due to some general physical cause. Would any particular
conditions tend to make the soil alkaline rather than acid ?
No. 73. This is a very good example of a broad twisted
ovate, patina rather whitish. It might well be from Saint Acheul
itself.
No. 93 is another good example, with a whitish speckled
patina. It also might be from Saint Acheul.
No. 10 is an ovate of Acheulean I. style, with a very slight
twist ; whitish patina.
No. 103 is a small and more pointed twisted ovate ; patina
yellowish white.
No. 87d is a small flat thin ovate.
Warren Hill, Suffolk.
There are in the collection two small, thick, crude, implements,
presented by Worthington Smith. The Warren Hill gravel
is of post-Mousterian date, and contains the mixed sweepings
of earlier deposits.
MOUSTERIAN.
Stoke Newington "Floor."
No. 56e. This is a crude flake, its only claim to interest being
that it was presented to the "Chip Chap Club" by Worthington
Smith, with the locality properly registered.
There are a few other implements which also resemble the
Stoke Newington "floor" series, but are without registered
locality, namely :—
No. 41b. (Plate X., fig. 2.) This is a good example of the
Mousterian "point" made by characteristic secondary trimming
of a flake. Most probably from the "floor."
No. 65a is a thin pointed implement, rather roughly made from
a flake. The writer has specimens from the "floor" which
afford a very close parallel in both patina and technique.
No. 34c is a trimmed flake.
No. 120a is an ochreous flake, with trimmed side edge (making
a narrow side scraper), and with slight "spur" at one end.
This patina occurs occasionally on the "floor," but is rare.
One cannot say "probably" from the "floor," but it might well be.