Seperate parts from Thomas Clouston.
Fig. 1. Portion of small intestine and mesentery with deposits of dark pigment.
Fig. 2. Ditto ditto.
Fig. 3. Portion of omentum with deposits of dark pigment.
Fig. 4. Deposit of dark pigment in the adipose tissue on the inner surface of the internal oblique muscle.
Figs. 5 & 6. Microscopic views of the dark pigment taken from fig.1, (1/4-inch).
Fib. 7. Natural size of the deposit represented in fig. 6.

Picture & text from original description of Addison's Disease, by Thomas Addison, in his book On the constitutional and local effects of disease of the supra-renal capsules. The book was scanned at the University of Iowa Libraries; for the original scan, see Plate 7 on the UI site.

For more information on the book, see Thomas Addison's Pictures.