PLATE 36.--AN ANTERIOR VIEW OF PLATE 35. A. Anterior superior iliac spinous process. B. The navel. C. The situation of the crista pubis. D. The external oblique muscle; d, its tendon. E. Internal oblique muscle; e, its tendon, covering the rectus muscle. F. Lower part of the transverse muscle; f, the conjoined tendon. G. The transversalis fascia investing the upper part of the hernial sac; g, the original situation of the epigastric artery internal to this hernia; g*, the new situation of the artery pushed inwards. H. The hernial sac, invested by h, the elongation of the fascia transversalis, or funnel-shaped sheath. I. The femoral artery. K. The femoral vein. L. The sartorius muscle. M. Iliac part of the fascia lata joining Poupart's ligament. N. Pubic part of the fascia lata. O. Saphena vein. P P. Falciform margin of the saphenous opening. Q. See Plate 38. R. Sheath of the femoral vessels. S. Anterior crural nerve. T. The external ring. [Illustration: Abdomen and leg, showing blood vessels, muscles and other internal organs.] Plate 36 PLATE 37. All the letters except the following indicate the same parts as in Plate 35. F. The epigastric artery passing between the two hernial sacs G. The umbilical ligament. H. The neck of the sac of the external hernia. I. The neck of the sac of the internal hernia. [Illustration: Abdomen, showing blood vessels, muscles and other internal organs.] Plate 37 PLATE 38.--AN ANTERIOR VIEW OF PLATE 37. All the letters, with the exception of the following, refer to the same parts as in Plate 36. G. The funnel-shaped elongation of the fascia transversalis receiving g, the sac of the external bubonocele. H. The sac of the internal inguinal hernia invested by h, the transversalis fascia. Q. The spermatic vessels lying on the outer side of H, the direct inguinal hernia. [Illustration: Abdomen and leg, showing blood vessels, muscles and other internal organs.] Plate 38 COMMENTARY ON PLATES 39 & 40. DEMONSTRATIONS OF THE NATURE OF CONGENITAL AND INFANTILE INGUINAL HERNIAE, AND OF HYDROCELE.