supposed by his
fellow-miners to have imbibed the disease,--indeed he removed from
Pencaitland on account of it. The two Hoggs were relatives, and natives
of East Lothian.

It is evident, from several of the cases, that it is no uncommon feature
of this affection for the carbon to remain concealed in the pulmonary
tissue for very many years; and as both the Hoggs were miners at
Pencaitland, I have not the smallest doubt that it was then and there
that the disease had its origin; for I have never known a collier who
was a stone-miner who did not ultimately die of the carbonaceous
infiltration.

Apart from colliers and coal-mines, as a proof that carbonaceous
particles floating in the atmosphere are inhaled and lodged in the
bronchial ramifications, I may state the following circumstance, which
came under my own observation several years ago. After a gale of wind,
which had continued for more than a week, off the coast of America, in
the July of 1832, I was applied to for advice by several of the seamen,
on account of a tickling cough, followed by a peculiarly dark blue
expectoration, which I was told was almost general amongst the crew. I
was certainly at a loss, and put to my shifts, to render a reason; but,
upon investigating the matter further, I found that, during the gale,
the chimney of the cook's apartment in the _'tween-decks_ was rendered
inefficient, whereby the sleeping-berths were constantly filled with
smoke. I found almost all the seamen, to the number of nearly a hundred,
suffering considerably from cough, and expectorating an inky-coloured
phlegm, which continued more or less for about a fortnight. I ordered
soothing expectorants, and the dark sputa were profusely voided, and
ultimately disappeared; but whether any of the carbon had made a
permanent lodgment in the pulmonary tissue, is what I have never been
able to ascertain. I am now convinced, in recalling this occurrence,
that whatever be the situation, should carbon be floating in the air, it
can be conveyed into the air-cells; and had these seamen been longer
subjected to this foul atmosphere, a permanent lodgment of the carbon
would undoubtedly have been the consequence, and the disease now under
our consideration to a certainty produced. I further remember seeing,
several years ago, a case of partially carbonized lungs in a person who
had lived for a length of time in a smoky and confined room in Glasgow.
The patient died of dropsy, consequent,