PERSONAL IDENTITY.

GENERAL CONSIDERATIONS.

Identity is the determination of the individuality of a person. In jurisprudence the term is applied to the recognition of a person who is the object of a judicial action. The establishment of the individuality of a person is known as absolute identity; while the relations of a person with some particular act is known as relative identity.

The great number and variety of facts concerned in the investigation of questions of identity are of considerable gravity and importance in their juridical bearing, and at the same time they are among the most interesting and most useful of the applications of modern medicine to the purposes of the law.[569]

Among the varied researches of legal medicine looking to an interpretation of facts, no other question occurs in which the solution depends more upon morphological and anatomical knowledge, and none is more dependent upon purely objective, visible, tangible facts.

Personal identity often constitutes the entire subject-matter of dispute in a civil case. Upon it may depend the question of absence or of marriage, of kinship or of filiation involving the possession of an estate, in which case the court often requires the most subtle of scientific evidence to assist in its decision. Many anthropological and medical facts, now appropriated by criminology and penal science, are useful in proving not only the present but in attesting future identity, thereby preventing in great measure the dissimulation of prisoners, deserters, false claimants to life insurance, fraudulent pensioners, and the like.

Such matters are of daily occurrence. The special agents of the U. S. Pension Office detect and cause the punishment of many fraudulent claimants. Stratagems and conspiracies to defraud life-insurance companies go much further than mere substitution. Instead of a “fraudulent” a positive death may come up for investigation, and in order to defraud an insurance company of a large amount, a body may even be procured by homicide to consummate the deception, as was done in the Goss-Udderzook tragedy near Baltimore in 1872.

A celebrated case now before the Supreme Court of the United States and involving the question of personal identity is that of the Mutual Life Insurance Company of New York, the New York Life Insurance Company, and the Connecticut Mutual Life Insurance Company of Hartford, Connecticut (Consolidated), plaintiffs in error, vs. Sallie E. Hillmon.

It is pre-eminently in criminal trials that the personal identity of the victim often constitutes an essential connecting link. Before it can move, the law requires, at the outset, proof of the individuality of both the author of a crime and of the victim. I shall, therefore, not touch upon such elusive individuals as Charlie Ross and Jack the Ripper, but limit my remarks to a synthetical exposition of the best-known facts regarding identification of the dead body and the interpretation of its organic remains.

The identity of a living person, or even our own identity, is often a difficult point to establish. It may also require medical evidence, oftentimes of a most involved character, to establish the fact of death. Hence the medico-legal process of connecting a dead body, or the remains or traces of the same, with a human being once known to have lived and moved on earth, is beset with difficulties that may give rise to still greater antagonisms of evidence. The question of personal identity is one of the hardest that could possibly come before a court. Celebrated cases and judicial errors have given it great notoriety. There are consequently few questions in forensic medicine that require more attention and sagacity, and none upon which the medical legist should pronounce with more reserve and circumspection. Medical men are absolutely the only persons qualified to assist in resolving the really delicate question of personal identity; yet the physician and the lawyer pursue the same line of logic and of inquiry. As the former must have a subject to dissect or to operate upon, so must the lawyer in pursuing a criminal investigation first prove a visible material substance known in legal phraseology as the corpus delicti, which he must connect with some personality, with some human being once known to have lived. In this important process the physician’s testimony being the indispensable guide of the court’s inference, he should limit himself to purely anatomical and material knowledge. The medical expert has absolutely nothing to do with guilt or innocence, as that is a question for the jury. He should, above all things, be absolutely free from prejudice, suspicion, or undue suggestion, and should remember that in thus sinking his personality his sole function as a skilled witness in cases of identity is to furnish testimony which, when taken in connection with other evidence in the case, may establish such a corpus delicti as would justify the inference of a crime.