PLATE I.

Appearance of the valves of the aorta in Case 3d, Article 10.

• a a The two valves thickened.
• b b Bony projections, one of which extends across the cavity of the valve.
• c The orifices of the coronary arteries.
• d d Fleshlike thickening of the aorta.

PLATE II.

Is a representation of the fleshlike thickening of the aorta in case 7th. The valves are smaller than usual, and their form is in some degree changed. A round spot, thickened, is seen at a little distance from the seat of the principal disease.