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are post-tertiary deposits of gravel and sand, described
in the geological survey as "Valley Brick
Earth." This extends from the line of the river up
to the railway and then stretches down the Claremont
Road to the Kingston Boundary. Fossils
have been discovered occasionally, but not in any
quantity. In the clay there have been found round
stones or boulders with iron stained crystals and
deposits of crystalline gypsum.
In the Chessington portion of the District the
soil is entirely London Clay, undulating considerably.
SOCIAL CONDITIONS.
The district is a residential one. It is situate
on the banks of the River Thames, but with a considerable
portion of it on hill ground at a height
of from 100 to 120 feet above ordnance datum.
A very large proportion of the adult residents
here are engaged in business in London, for access
to which the facilities offered by the Southern Railway
by both steam and electric trains, and by bus
services, are not surpassed when compared with any
similar extra metropolitan district. There is also an
efficient and adequate service of buses and trolley
tramways connecting with most of the adjoining
districts.
There has been a slight increase in the number
of factories in the District. The addition of these
factories, however, cannot be said to exert any
particular influence upon the health of the workers.
Of the workers engaged at the factories and
workshops the majority are resident within the
District.