When a femoral hernia protrudes at the saphenous space L h, Pl. 28, the dense falciform process, h, embraces its outer side, while the pubic portion of the fascia, L, lies beneath it. The cord, K, is placed on the inner side of the hernia; the cribriform fascia covers it; and the upper end of the saphena vein, M, passes beneath its lower border. The upper cornu, h, Pl. 29, of the falciform process would seem, by its situation, to be one of the parts which constrict a crural hernia. An inguinal hernia, which descends the cord, K, Pl. 28, provided it passes no further than the point indicated at K, and a crural hernia turning upwards from the saphenous interval over the cord at K, are very likely to present some difficulty in distinctive diagnosis. DESCRIPTION OF THE FIGURES OF PLATES 28 & 29. PLATE 28. A. The fleshy part of the external oblique muscle; a, its tendon covering the rectus muscle. B. The umbilicus. C. The anterior superior spinous process of the ilium. D. The spinous process of the os pubis. E. The point where in this instance the fibres of the aponeurotic tendon of the external oblique muscle begin to separate and form the pillars of the external ring. F G. See Plate 29. H. The fascia lata--its iliac portion. The letter indicates the situation of the common femoral artery; h, the falciform edge of the saphenous opening. I. The sartorius muscle covered by a process of the fascia lata. K. The spermatic fascia derived from the external oblique tendon. L. The pubic part of the fascia lata forming the inner and posterior boundary of the saphenous opening. M. The saphenous vein. N. A tributary vein coming from the fore part of the thigh. [Illustration: Abdomen and leg, showing blood vessels, muscles and other internal organs.] Plate 28 PLATE 29. A. The muscular part of the external oblique; a, its tendon. B. The umbilicus. C. The anterior superior iliac spine. D. The spine of the os pubis. E. The cremasteric fibres, within the external ring, surrounding the cord; e, the cremasteric fibres looping over the cord outside the ring. F. The muscular part of the internal oblique giving off, E, the cremaster; its tendon sheathing the rectus muscle. G. The linea alba; f, g, the linea semilunaris. H. The iliac part of the fascia lata; h, the upper cornu of its falciform process. I. The femoral vein. K. The femoral artery. L. The anterior crural nerve. M. The sartorius muscle. N. The sheath of the femoral vessels; n, its upper part. O. The saphena vein. P. The pubic part of the fascia lata. [Illustration: Abdomen and leg, showing blood vessels, muscles and other internal organs.] Plate 29 COMMENTARY ON PLATES 30 & 31. THE SURGICAL DISSECTION OF THE FIFTH, SIXTH, SEVENTH, AND EIGHTH LAYERS OF THE INGUINAL REGION, AND THEIR CONNEXION WITH THOSE OF THE THIGH.