CO129-238 - Governor Des Voeus - 1888 [7-8] — Page 409

Brings

406

Consist

bed

of soft clay mud.

of a which gradually, gets

compact until a

noore

solid and

hard gravelly or

stony incompressible substratum is reached at the various depeth's shewn

by red line in the sheet of Cross

sections.

The borings of the sea-bed shewn

the cross sections were

made

with an

iron bar, specially constricted in lengths or sections to

perew on

سمجھ

graduated with marks. The bar

Auck

wav

11⁄2 mich in diameter and shod with a

steel probe or pouit. It was worker

from a

platform between two large lighters securely moored, the borings planding

being jumped by six mun,

at different levels. At the fresh blow the bar would sink through the duch

foot to two jest, progress

from

Aru

minishing

dis.