the boulders rattling loudly over our head with each successive wave;
but there is no danger here, because the cutting under the sea is
narrow, and the rock solid and intensely hard.

Such also was the case, not many years since, at Levant mine, where the
men working in the levels under the sea drove upwards until the salt
water began to trickle through to them in alarming quantities--insomuch
that the other miners struck work, and refused to go again into the
mine, unless the workings in that part were stopped, and the place made
secure. This was accordingly done, and the men returned to the mine.
The danger here was really great, because the cutting that had been made
was wide, and the ground overhead comparatively soft.

But, to return to our tale.

For many days after the catastrophe Oliver Trembath lay in his bed
suffering from severe cuts and bruises, as well as from what must have
been, as nearly as possible, concussion of the brain, for he had
certainly been washed down one of the winzes, although he himself
retained only a confused recollection of the events of that terrible
day, and could not tell what had befallen him. At length, however, he
became convalescent, and a good deal of his old vigour returned.

During this period of illness and convalescence Oliver had been
constrained by old Mr Donnithorne to take up his abode in his house,
and the young doctor could not have experienced more attention and
kindness from the old couple if he had been their son. Rose Ellis, too,
did her best to cheer him, and, as we need scarcely add, was wonderfully
successful in her efforts!

It was during this period that Oliver made the acquaintance of a young
man of St. Just, named Charles Tregarthen--a congenial spirit--and one
who was, besides, a thorough gentleman and an earnest Christian. With
this youth he formed a sincere friendship, and although the subject of
religion was never obtrusively thrust upon him by young Tregarthen, it
entered so obviously into all his thoughts, and shone so clearly in his
words and conduct, that Oliver's heart was touched, and he received
impressions at that time which never left him.

Oliver and his friend were sitting one forenoon in Mr Donnithorne's
dining-room, which commanded an extensive view of green fields and
grass-covered stone walls, with the beams and machinery of mines on the
horizon, and the blue sea beyond. They were planning a short walking
tour, which it was thoug