[2] Some account of the latter, from the _Journal de Physique_, will be found in the Appendix.—TRANS. EXPERIMENT LVII. In order to try the vital force existing in the human body after death, I immerse the hand in a solution of muriate of soda, and establish an arc, one of the extremities of which is made to pass round the fore-arm, while the other is brought into contact with the bottom of the pile. I adapt to the extremity of another arc an elastic probe, which is applied to one of the ears, moistened by means of a syringe with the same solution, and connect the other extremity of the arc with the summit of the pile. By this arrangement various contractions, according to the different degrees of vitality in the bodies, are observed, sometimes in the fingers, sometimes in the hand, and sometimes in the whole arm. The fingers bend, and move in a sensible manner; and sometimes the whole of the fore-arm proceeds towards the breast. The importance of this method for determining the duration of the vital powers after death may be readily comprehended. Should means be found hereafter to make further discoveries in regard to this interesting point, physiologists may then be able to determine with certainty those cases when interment ought to be retarded; and those where the good of society requires that every possible means of resuscitation should be employed. In the large hospital of Bologna, I made several observations on this subject; and remarked in particular, how much the nature of the disease contributes, _cæteris paribus_, to produce a difference in the duration of the muscular contractions. I tried the case of death produced by putrid fevers, by pleurisies, by wounds in the pericardium, by the scurvy, and by the consequences of parturition; and I found a great difference in the degrees of vitality, according to the circumstances of the disease, the age and temperament of the individual; which confirms me in the opinion I entertain, that these experiments, if long continued without intermission by able physiologists, might be of the greatest benefit to medicine.