Chronic Bright's Disease.

Although two kinds of nephritis, chronic parenchymatous nephritis and chronic interstitial nephritis, are described under the name Chronic Bright's Disease, each possesses to a great extent the same lesion, the only difference being in the exudation.

In the former there is dropsy, and post-mortem reveals the large white kidney, though the white small kidney may be found.

In the latter, cardio-vascular changes are prominent, and dropsy is usually absent.