in the baking, and turn into a glaze or glass. Then we have finer
clay worked up into crockery; and lastly, the beautiful white clay
which, when baked, becomes transparent,--a Chinese discovery, and to
this day it bears its name, "china."

This fine white clay the Chinese call _kaolin_, and it is to the
discovery of veins of the soft white plastic material in England that
the wonderful strides in our china manufactures are due.

And what is this kaolin of which Will had discovered so grand a store?
Well, it is easily explained. The rocks of Cornwall are largely of
granite, a stone that must be familiar to every one. It is formed of
grains of quartz, mica the shiny, and felspar, that soft white creamy
stone like our old alley marbles. This vein of granite will be close
and hard, and contain a vast preponderance of quartz, the flinty; and
that vein of granite will be very soft from containing so much felspar;
and this granite, a familiar example of which can be seen in the
material of Waterloo Bridge, the learned, who give names, call porphyry.

Such granite as this abounds in Cornwall, and some, too, which is nearly
all felspar, and such rock as this in the course of ages forms such a
bed of kaolin as Will Marion disclosed to the father of his friends.

For the felspar is soft, and imbibes water; and in the course of time
the water causes it to break up, decay, and change from stone to a soft
white clay, while where it is hard, burning and pounding will do the
work that nature has not quite finished yet.

Mr Temple did not go so far as to commence a pottery, for there was no
need, the manufacturers being ready to purchase all the clay that the
works could produce; and when Dick and Arthur Temple finally settled
down to business, it was to find Will Marion their father's right-hand
man.

Later on some further investigations were made of the mineral deposits
in the seals' cave; but, good as they were, Will Marion shook his head
at them, and Mr Temple took his view. The tin looked promising; but
tin and copper mining was so speculative a venture that it was
determined to keep only to the china-clay, which brought prosperity to
all.

The lads often visited the haunts of their old adventures in company
with Josh, who was still venerable Uncle Abram's head man; and it was
only necessary to hint at the desire for an evening's fishing to make
Josh declare, that as long as there was a gashly boat in the bay, they
sh