238 THE MICROSCOPE. 
fibroid (chronic splenitis fibrosa): macroscropically the coal pigment 
is visible and is grouped principally along the arteries and in the 
periphery of the malpighian bodies, and lies’ in the lymphatic 
vessels of the capsule as a black, finely grained pigment. In the 
liver the pigment is macroscopically not visible, but only microscop- 
ically, and especially along the smaller perivascular arteries, in the 
interlobular tissue, in the cells of the tissue along the vena centralis; 
finally even in the larger perivascular lymphatic spaces and in the 
lymphatic vessels of the capsule. (See figures 3 and 4.) 
In the kidneys no pigment could be found. 
Cast VIII.—‘‘ Stone-cutters’ Lungs” (Chalicosis-Pulmonum. ) 
Anthracotic pigmentation is strong, and the lungs are extensively 
dotted with knots, of almost stony hardness, (stone-cutter tubercles. 
—Gaertner), but shows no especial slaty induration: the blood capacity 
is increased and that of air diminished. Infarction or the formation of 
cavities is not present. Bronchial and tracheal lymphatic glands 
at the base are enlarged, indurated and slaty; several of them are ad- 
herent to the bronchia and vessels, the walls of which are more or less 
infiltrated with coal pigment. A shrunken black gland is adherent 
to the right principal bronchus. This principal bronchus being 
opened at the point of junction a radiated, slaty cicatrix is disclosed, 
the center of which is disintegrated so that with a probe one can 
easily penetrate into the interior of the gland. Black pigment was 
deposited in the liver and spleen. 
Cast IX.—“ Slaty Induration of the Lungs.” 
Anthracotic pigmentation of the lungs is very marked; they ap- 
pear almost entirely black. The right lung is greatly streaked with 
slaty indurated cicatrices and almost devoid of air, but rather well sup- 
plied with blood. Several bronchi-ectasic cavities are present. On the 
contrary the pigmentation of the left lung is less, as well as the in- 
duration, but it has some marginal emphysema. The bronchial and 
trachial lymphatic glands at the base are colosally enlarged ; several 
of them are strongly indurated and black, and are adherent to the bron- 
chia and the surrounding vessels, the walls of which are more or less 
streaked with anthracotic pigment. A larger black lymphatic gland 
is adherent to the principal branch of the vena pulmonalis, the wall of 
which is very strongly colored with coal pigment. An incision into 
the vena pulmonalis discloses an opening at the place of junction, 
In the liver and spleen there is a bulky deposit of pigment. In the 
latter it can even be diagnosticated macroscopically. In the kidneys 
there is a smaller mass of black pigment within a degenerated glom- 
erulus; and which proved to be anthracotic pigment. See fig. No. 5. 
