THE RELATIVE POSITION OF THE DEEPER ORGANS OF THE THORAX AND THOSE OF THE ABDOMEN. Of the heart in reference to auscultation and percussion. Of the lungs, ditto. Relative capacity of the thorax and abdomen as influenced by the motions of the diaphragm. Abdominal respiration. Physical causes of abdominal herniae. Enlarged liver as affecting the capacity of the thorax and abdomen. Physiological remarks on wounds of the lungs. Pneumothorax, emphysema, &c. COMMENTARY ON PLATE 24 THE RELATIONS OF THE PRINCIPAL BLOODVESSELS TO THE VISCERA OF THE THORACICO-ABDOMINAL CAVITY. Symmetrical arrangement of the vessels arising from the median thoracico-abdominal aorta, &c. Special relations of the aorta. Aortic sounds. Aortic aneurism and its effects on neighbouring organs. Paracentesis thoracis. Physical causes of dropsy. Hepatic abscess. Chronic enlargements of the liver and spleen as affecting the relative position of other parts. Biliary concretions. Wounds of the intestines. Artificial anus. COMMENTARY ON PLATE 25 THE RELATION OF THE PRINCIPAL BLOODVESSELS OF THE THORAX AND ABDOMEN TO THE OSSEOUS SKELETON. The vessels conforming to the shape of the skeleton. Analogy between the branches arising from both ends of the aorta. Their normal and abnormal conditions. Varieties as to the length of these arteries considered surgically. Measurements of the abdomen and thorax compared. Anastomosing branches of the thoracic and abdominal parts of the aorta. COMMENTARY ON PLATE 26 THE RELATION OF THE INTERNAL PARTS TO THE EXTERNAL SURFACE. In health and disease. Displacement of the lungs from pleuritic effusion. Paracentesis thoracis. Hydrops pericardii. Puncturation. Abdominal and ovarian dropsy as influencing the position of the viscera. Diagnosis of both dropsies. Paracentesis abdominis. Vascular obstructions and their effects. COMMENTARY ON PLATE 27 THE SURGICAL DISSECTION OF THE SUPERFICIAL PARTS AND BLOODVESSELS OF THE INGUINO-FEMORAL REGION. Physical causes of the greater frequency of inguinal and femoral herniae. The surface considered in reference to the subjacent parts. COMMENTARY ON PLATES 28 & 29 THE SURGICAL DISSECTION OF THE FIRST, SECOND, THIRD, AND FOURTH LAYERS OF THE INGUINAL REGION, IN CONNEXION WITH THOSE OF THE THIGH. The external abdominal ring and spermatic cord. Cremaster muscle--how formed. The parts considered in reference to inguinal hernia. The saphenous opening, spermatic cord, and femoral vessels in relation to femoral hernia. 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. The conjoined tendon, internal inguinal ring, and cremaster muscle, considered in reference to the descent of the testicle and of the hernia. The structure and direction of the inguinal canal. COMMENTARY ON PLATES 32, 33, & 34 THE DISSECTION OF THE OBLIQUE OR EXTERNAL, AND OF THE DIRECT OR INTERNAL INGUINAL HERNIA.