7. _The Liver._--This organ is not unfrequently found firm and dense some weeks after death. It putrefies earlier in new-born children than in adults. The convex surface first shows signs of putrefaction. The gall-bladder also remains for some time recognisable. 8. _The Adult Brain._--The brain of newly-born children, as mentioned before, soon putrefies. This is not the case in the adult brain. Putrefaction sets in not on the surface, but at the base of the brain. A wound of the brain causes it to putrefy more rapidly than if no injury be present. Organs which Putrefy Late 9. _The Heart._ 10. _The Lungs._--Contemporaneously with the appearance of decomposition in the heart, the lungs also begin to show signs of putrefaction, though this condition may take place earlier. 11. _The Kidneys._--These organs are long in yielding to the putrefactive process. 12. _The Bladder._--Nearly all the other organs of the body are in a state of decomposition before this viscus becomes materially affected. 13. _The Gullet._--This long remains firm, even after the stomach and intestines fail to be recognised. 14. _The Pancreas._--The body must be far advanced in putrefaction before this gland becomes affected. 15. _The Diaphragm._--This may be distinguished after the lapse of four to six months. 16. _The Blood-vessels._--The aorta may be recognised after the body has been interred for fourteen months. 17. _The Uterus._--Of all the organs of the body, the uterus resists the putrefactive changes longer than any other organ. Table showing some important Facts to be noticed with regard To Putrefaction: 1. Earliest external indication of it. (1) _In a Body exposed to Air._--Greenish coloration of the abdominal coverings. (2) _In a Body immersed in Water._--Face, head, and ears, gradually extending from above downwards. 2. Earliest internal indication.--Found in the trachea, including the larynx. 3. Advanced putrefactive appearances to be expected in a body exposed to air, say from fourteen to twenty days at mean temperature, as regards-- (1) _Epidermis._--Raised here and there in blisters about the size of a walnut, in some places the size of a dinner plate, and quite stripped off. (2) _True Skin._--Maggots cover the body, chiefly in the folds of the skin. (3) _Cellular Tissue._--Blown up with gas. 4. Comparative time required to produce equal extent of putrefaction in a body-- (1) _In Air._--One week. One month. (2) _In Water._--Two weeks. Two months. (3) _In Earth._--Eight weeks. Eight months.