Thorax and abdomen of conjoined twins, dissection of shared heart, shown in situ and in isolation, in 3 numbered illustrations. 1 illustration of female neonates, joined at the thorax and abdomen, anterior thoracic and abdominal wall removed to show thoracic and abdominal organs. Single shared liver, diaphragm shown. Left twin has left lung and spleen, right twin has right lung, right kidney. Single anomalous heart shown in centre. 2 thymus glands shown. Separate trachea, esophagus and thyroid glands shown. 2 illustrations of dissection of the heart, showing 2 aortas, 2 inferior vena cava, anomalous chambers.