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Henry ab Heer records the case of a man who not only laboured under diapedesis, but small worms accompanied the bloody secretion.

The theory of blood pressure may apply to diapedesis accompanying the inflammatory process.

Through the openings by which the leucocytes have escaped from the vessels, red corpuscles may be passively extruded—diapedesis of red corpuscles.

To one of Virchow's pupils, Prof. Recklinghausen, we chiefly owe our knowledge of the phenomena of diapedesis as a part of the inflammatory activity.

Fournier also mentions a curious case of diapedesis in a woman injured by a cow.