bronchus in particular was much swollen and partially ulcerated towards
the root of the lung. In examining the heart after its removal from the
body, it was found peculiarly large and flabby, its cavities
considerably distended, especially the right auricle and ventricle,
while the valvular structure seemed natural. The pericardium contained
about 10 ounces of straw-coloured fluid. After examining the organ
particularly, I could discover nothing abnormal, but the enlarged and
softened state alluded to. The liver was large and highly congested with
dark thick blood, but otherwise it was healthy. The gall-bladder was
empty, and the spleen large and congested. The stomach was smallish and
empty. The mucous membrane was smeared with a blackish, tenacious fluid,
which, upon removal, appeared to be a portion of the expectoration. The
structure, as far as could be ascertained, was healthy. The small and
great intestines contained fluid carbon (evidently swallowed), while no
disease was manifest. The mesenteric glands were small and rather firm,
but they contained no black matter; the mesentery was much congested
with dark venous blood. The kidneys were apparently healthy, though
soft. The bladder was small and contracted. The head was not examined,
as I expected nothing but general congestion of the vessels.

This case comes under the third division of the disease, where the lungs
were cavernous, and where there was free expectoration of carbon.

CASE 2. The following case is one of unsuspected carbonaceous
accumulation in the lungs, the history of which proves the fact, that
the disease, when once established in the pulmonary structure, continues
to advance till it effects the destruction of the organs, although the
patient has not been engaged in any mining operations for many years
previous to his death.

Robert Reid, aged forty-six at his death, had been a collier since his
boyhood. He was a short, stout-made man, of very healthy constitution,
and never knew what it was to have a cough. He spent the early part of
his life at a coal-mine, near Glasgow (Airdrie), where he all along
enjoyed good health. In 1829, he removed from Airdrie to the coal-work
at Preston-Hall, Mid-Lothian, where he engaged in mining operations;
and, from the time he made this change, he dated the affection of which
he died, at the end of 1836. Two months after he removed to Preston-Hall
colliery, he was seized with bronchial affection, giving rise