Transactions . the bodyof that vertebra; (diagram 7;) thence the aortadescends in front of the left half of the bodies ofthe dorsal vertebrae. The second sound of theaortic valves is well heard over the upper part ofand above the sternum, in front of the great vessels;it is likewise heard with great clearness, thoughfeebly in comparison with the points just named,over the third, fourth, and lower dorsal vertebrae,especially to the left of their spines. (Diagrams1 and 2) If aortic regurgitation give rise to ab-normal sounds, these are loudest and clearest overthe usual seat of the replaced aort
Transactions . the bodyof that vertebra; (diagram 7;) thence the aortadescends in front of the left half of the bodies ofthe dorsal vertebrae. The second sound of theaortic valves is well heard over the upper part ofand above the sternum, in front of the great vessels;it is likewise heard with great clearness, thoughfeebly in comparison with the points just named,over the third, fourth, and lower dorsal vertebrae,especially to the left of their spines. (Diagrams1 and 2) If aortic regurgitation give rise to ab-normal sounds, these are loudest and clearest overthe usual seat of the replaced aortic second sounds of the aortic and pulmonic valves are,to some extent, muffled by the thin layers of lungsinterposed between them and the sternum. Inrobust large-chested persons, and in females, wherethe upper part of the chest has been unnaturallydeveloped by the influence of tight lacing, the 326 ON CHANGES IN THE SITUATION 5.—ORGANS HEALTHY. Mary Blighton, aged 4, Died from the Effects of a 1. Right lung; 1. Left lung 2. Heart.—3. Right auricle.—4. Vena cava.— 5. Aorta.—6. Pulmonaiy artery.—7« Liver 7. Posterior deep boundary of the liver 8. Stomach.—9. Spleen. Weight of Organs.—Right lung, 3f ounces; left lung, 3 ditto ; heart, 2§ ditto ;iver, 12 ditto ; spleen, 2 ditto ; right kidney, \\ ditto; left kidney, If ditto. Enormous flatulent distention, tilting upwards the anterior edge of the liver. OF THK INTERNAL ORGANS. 327 sounds of these valves over the sternum are compara-tively indistinct. Right Ventricle.—The right ventricle lies imme-diately behind the lower half of the sternum andthe third, fourth, and fifth intercostal junction with the right auricle takes a curveobliquely downwards and to the right, from thecentre of the sternum between the third costal carti-lages to the sternal junction of the sixth and seventhright costal cartilages. (Diagram 1.) The leftboundary of this ventricle is defined by a line,drawn almo
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