SOME ESSEX WELL-SECTIONS. 51
This section seems to show the presence of the Oldhaven or
Blackheath Beds.
The occurrence of sandy beds in the Chalk is peculiar, and it is a
question whether these are owing to infiltration of Tertiary sand down
joints, or whether they are merely loose gritty beds in the Chalk.
Foxearth.—The Brewery (Messrs. Ward's).
Made and communicated by Messrs. Isler and Co.
Supply 1,200 gallons an hour.
If any of the beds should turn out to be Eocene, there must be
an outlier here, quite hidden under Drift.