Aids to Forensic Medicine and Toxicology
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Aids to Forensic Medicine and Toxicology - W. G. Aitchison Robertson
W. G. Aitchison Robertson
Aids to Forensic Medicine and Toxicology
EAN 8596547246428
DigiCat, 2022
Contact: [email protected]
Table of Contents
PART I
FORENSIC MEDICINE
I.—CRIMES
II.—MEDICAL EVIDENCE
III.—PERSONAL IDENTITY
IV.—EXAMINATION OF PERSONS FOUND DEAD
V.—MODES OF SUDDEN DEATH
VI.—SIGNS OF DEATH
VII.—DEATH FROM ANÆSTHETICS, ETC.
VIII.—PRESUMPTION OF DEATH; SURVIVORSHIP
IX.—ASSAULT, MURDER, MANSLAUGHTER, ETC.
X.—WOUNDS AND MECHANICAL INJURIES
XI.—CONTUSED WOUNDS AND INJURIES UNACCOMPANIED BY SOLUTION OF CONTINUITY
XII.—INCISED WOUNDS AND THOSE ACCOMPANIED BY SOLUTION OF CONTINUITY
XIII.—GUNSHOT WOUNDS
XIV.—WOUNDS OF VARIOUS PARTS OF THE BODY
XV.—DETECTION OF BLOOD-STAINS, ETC.
XVI.—DEATH BY SUFFOCATION
XVII.—DEATH BY HANGING
XVIII.—DEATH BY STRANGULATION
XIX.—DEATH BY DROWNING
XX.—DEATH FROM STARVATION
XXI.—DEATH FROM LIGHTNING AND ELECTRICITY
XXII.—DEATH FROM COLD OR HEAT
XXIII.—PREGNANCY
XXIV.—DELIVERY
XXV.—FŒTICIDE, OR CRIMINAL ABORTION
XXVI.—INFANTICIDE
XXVII.—EVIDENCES OF LIVE BIRTH
XXVIII.—CAUSE OF DEATH IN THE FŒTUS
XXIX.—DURATION OF PREGNANCY
XXX.—VIABILITY OF CHILDREN
XXXI.—LEGITIMACY
XXXII.—SUPERFŒTATION
XXXIII.—INHERITANCE
XXXIV.—IMPOTENCE AND STERILITY
XXXV.—RAPE
XXXVI.—UNNATURAL OFFENCES
XXXVII.—BLACKMAILING
XXXVIII.—MARRIAGE AND DIVORCE
XXXIX.—FEIGNED DISEASES
XL.—MENTAL UNSOUNDNESS
XLI.—IDIOCY, IMBECILITY, CRETINISM
XLII.—DEMENTIA: ACUTE, CHRONIC, SENILE, AND PARALYTIC
XLIII.—MANIA
XLIV.—EXAMINATION OF PERSONS OF UNSOUND MIND
XLV.—THE INEBRIATES ACTS
PART II
TOXICOLOGY
I.—DEFINITION OF A POISON
II.—SALE OF POISONS; SCHEDULED POISONS
III.—ACTION OF POISONS; CLASSIFICATION OF POISONS
IV.—EVIDENCE OF POISONING
V.—SYMPTOMS AND POST-MORTEM APPEARANCES OF DIFFERENT CLASSES OF POISONS
VI.—DUTY OF PRACTITIONER IN SUPPOSED CASE OF POISONING
VII.—TREATMENT OF POISONING
VIII.—DETECTION OF POISONS
IX.—THE MINERAL ACIDS
X.—SULPHURIC ACID
XI.—NITRIC ACID
XII.—HYDROCHLORIC ACID
XIII.—OXALIC ACID
XIV.—CARBOLIC ACID
XV.—POTASH, SODA, AND AMMONIA
XVI.—INORGANIC IRRITANTS
XVII.—CHLORATE OF POTASSIUM, ETC.
XVIII.—BARIUM SALTS
XIX.—IODINE—IODIDE OF POTASSIUM
XX.—PHOSPHORUS
XXI.—ARSENIC AND ITS PREPARATIONS
XXII.—ANTIMONY AND ITS PREPARATIONS
XXIII.—MERCURY AND ITS PREPARATIONS
XXIV.—LEAD AND ITS PREPARATIONS
XXV.—COPPER AND ITS PREPARATIONS
XXVI.—ZINC, SILVER, BISMUTH, AND CHROMIUM
XXVII.—GASEOUS POISONS
XXVIII.—VEGETABLE IRRITANTS
XXIX.—OPIUM AND MORPHINE
XXX.—BELLADONNA, HYOSCYAMUS, AND STRAMONIUM
XXXI.—COCAINE
XXXII.—CAMPHOR
XXXIII.—TETRACHLORETHANE, ETC.
XXXIV.—ALCOHOL, ETHER, AND CHLOROFORM
XXXV.—CHLORAL HYDRATE
XXXVI.—PETROLEUM AND PARAFFIN-OIL
XXXVII.—ANTIPYRINE, ANTIFEBRIN, PHENACETIN, AND ANILINE
XXXVIII.—SULPHONAL, TRIONAL, TETRONAL, VERONAL, PARALDEHYDE
XXXIX.—CONIUM AND CALABAR BEAN
XL.—TOBACCO AND LOBELIA
XLI.—HYDROCYANIC ACID
XLII.—ACONITE
XLIII.—DIGITALIS
XLIV.—NUX VOMICA, STRYCHNINE, AND BRUCINE
XLV.—CANTHARIDES
XLVI.—ABORTIFACIENTS
XLVII.—POISONOUS FUNGI AND TOXIC FOODS
XLVIII.—PTOMAINES OR CADAVERIC ALKALOIDS
INDEX
BAILLIÈRE, TINDALL & COX'S
MANUALS FOR STUDENTS
BOOKS FOR STUDENTS.
STUDENTS' AIDS SERIES.
PART I
Table of Contents
FORENSIC MEDICINE
Table of Contents
I.—CRIMES
Table of Contents
Forensic medicine is also called Medical Jurisprudence or Legal Medicine, and includes all questions which bring medical matters into relation with the law. It deals, therefore, with (1) crimes and (2) civil injuries.
1. A crime is the voluntary act of a person of sound mind harmful to others and also unjust. No act is a crime unless it is plainly forbidden by law. To constitute a crime, two circumstances are necessary to be proved—(a) that the act has been committed, (b) that a guilty mind or malice was present. The act may be one of omission or of commission. Every person who commits a crime may be punished, unless he is under the age of seven years, is insane, or has been made to commit it under compulsion.
Crimes are divided into misdemeanours and felonies. The distinction is not very definite, but, as a rule, the former are less serious forms of crime, and are punishable with a term of imprisonment, generally under two years; while felonies comprise the more serious charges, as murder, manslaughter, rape, which involve the capital sentence or long terms of imprisonment.
An offence is a trivial breach of the criminal law, and is punishable on summary conviction before a magistrate or justices only, while the more serious crimes (indictable offences) must be tried before a jury.
2. Civil injuries differ from crimes in that the former are compensated by damages awarded, while the latter are punished; any person, whether injured or not, may prosecute for a crime, while only the sufferer can sue for a civil injury. The Crown may remit punishment for a crime, but not for a civil injury.
II.—MEDICAL EVIDENCE
Table of Contents
On being called, the medical witness enters the witness-box and takes the oath. This is very generally done by uplifting the right hand and repeating the oath (Scottish form), or by kissing the Bible, or by making a solemn affirmation.
1. He may be called to give ordinary evidence as a common witness. Thus he may be asked to detail the facts of an accident which he has observed, and of the inferences he has deduced. This evidence is what any lay observer might be asked.
2. Expert Witness.—On the other hand, he may be examined on matters of a technical or professional character. The medical man then gives evidence of a skilled or expert nature. He may be asked his opinion on certain facts narrated—e.g., if a certain wound would be immediately fatal. Again, he may be asked whether he concurs with opinions held by other medical authorities.
In important cases specialists are often called to give evidence of a skilled nature. Thus the hospital surgeon, the nerve specialist, or the mental consultant may be served with a subpœna to appear at court on a certain date to give evidence. The evidence of such skilled observers will, it is supposed, carry greater weight with the jury than would the evidence of an ordinary practitioner.
Skilled witnesses may hear the evidence of ordinary witnesses in regard to the case in which they are to give evidence, and it is, indeed, better that they should understand the case thoroughly, but they are not usually allowed to hear the evidence of other expert witnesses.
In civil cases the medical witness should, previous to the trial, make an agreement with the solicitor who has called him with reference to the fee he is to receive. Before consenting to appear as a witness the practitioner should insist on having all the facts of the case put before him in writing. In this way only can he decide as to whether in his opinion the plaintiff or defendant is right as regards the medical evidence. If summoned by the side on which he thinks the medical testimony is correct, then it is his duty to consent to appear. If, however, he is of opinion that the medical evidence is clearly and correctly on the opposite side, then he ought to refuse to appear and give evidence; and, indeed, the lawyer would not desire his presence in the witness-box unless he could uphold the case.
Whether an expert witness who has no personal knowledge of the facts is bound to attend on a subpœna is a moot point. It would be safer for him to do so, and to explain to the judge before taking the oath that his memory has not been sufficiently 'refreshed.' The solicitor, if he desires his evidence, will probably see that the fee is forthcoming.
A witness may be subjected to three examinations: first, by the party on whose side he is engaged, which is called the 'examination in chief,' and in which he affords the basis for the next examination or 'cross-examination' by the opposite side. The third is the 're-examination' by his own side. In the first he merely gives a clear statement of facts or of his opinions. In the next his testimony is subjected to rigid examination in order to weaken his previous statements. In the third he is allowed to clear up any discrepancies in the cross-examination, but he must not introduce any new matter which would render him liable to another cross-examination.
The medical witness should answer questions put to him as clearly and as concisely as possible. He should make his statements in plain and simple language, avoiding as much as possible technical terms and figurative expressions, and should not quote authorities in support of his opinions.
An expert witness when giving evidence may refer to notes for the purpose of refreshing his memory, but only if the notes were taken by him at the time when the observations were made, or as soon after as practicable.
There are various courts in which a medical witness may be called on to give evidence:
1. The Coroner's Court.—When a coroner is informed that the dead body of a person is lying within his jurisdiction, and that there is reasonable cause to suspect that such person died either a violent or unnatural death, or died a sudden death of which the cause is unknown, he must summon a jury of not less than twelve men to investigate the matter—in other words, hold an inquest—and if the deceased had received medical treatment, the coroner may summon the medical attendant to give evidence. By the Coroners (Emergency Provisions) Act of 1917, the number of the jury has been cut down to a minimum of seven and a maximum of eleven men. By the Juries Act of 1918, the coroner has the power of holding a court without a jury if, in his discretion, it appears to be unnecessary. In charges of murder, manslaughter, deaths of prisoners in prison, inmates of asylums or inebriates' homes, or of infants in nursing homes, he must summon a jury. The coroner may be satisfied with the evidence as to the cause of a person's death, and may dispense with an inquest and grant a burial certificate.
Cases are notified to the coroner by the police, parish officer, any medical practitioner, registrar of deaths, or by any private individual.
Witnesses, having been cited to appear, are examined on oath by the coroner, who must, in criminal cases at least, take down the evidence in writing. This is then read over to each witness, who signs it, and this forms his deposition. At the end of each case the coroner sums up, and the jury return their verdict or inquisition, either unanimously or by a majority.
If this charges any person with murder or manslaughter, he is committed by the coroner to prison to await trial, or, if not present, the coroner may issue a warrant for his arrest.
A chemical analysis of the contents of the stomach, etc., in suspected cases of poisoning is usually done by a special analyst named by the coroner. If any witness disobeys the summons to attend the inquest, he renders himself liable to a fine not exceeding £2 2s., but in addition the coroner may commit him to prison for contempt of court. In criminal cases the witnesses are bound over to appear at the assizes to give evidence there. The coroner may give an order for the exhumation of a body if he thinks the evidence warrants a post-mortem examination.
Coroners' inquests are held in all cases of sudden or violent death, where the cause of death is not clear; in cases of assault, where death has taken place immediately or some time afterwards; in cases of homicide or suicide; where the medical attendant refuses to give a certificate of death; where the attendants on the deceased have been culpably negligent; or in certain cases of uncertified deaths.
The medical witness should be very careful in giving evidence before a coroner. Even though the inquest be held in a coach-house or barn, yet it has to be remembered it is a court of law. If the case goes on for trial before a superior court, your deposition made to the coroner forms the basis of your examination. Any misstatements or discrepancies in your evidence will be carefully inquired into, and you will make a bad impression on judge and jury if you modify, retract, or explain away your evidence as given to the coroner. You had your opportunity of making any amendments on your evidence when the coroner read over to you your deposition before you signed it as true.
By the Licensing Act of 1902, an inquest may not be held in any premises licensed for the sale of intoxicating liquor if other suitable premises have been provided.
The duties of the coroner are based partly on Common Law, and are also defined by statute, principally by the Coroners Act of 1887 (50 and 51 Vict. c. 71). They have been modified, however, by subsequent Acts—e.g., the Act of 1892, the Coroners (Emergency Provisions) Act, 1917, and the Juries Act of 1918.
The fee payable to a medical witness for giving evidence at an inquest is one guinea, with an extra guinea for making a post-mortem examination and report (in the metropolitan area these fees are doubled). The coroner must sign the order authorizing the payment, and should an inquest be adjourned to a later day, no further fee is payable. If the deceased died in a hospital, infirmary, or lunatic asylum, the medical witness is not paid any fee. Should a medical witness neglect to make the post-mortem examination after receiving the order to do so, he is liable to a fine of £5.
In Scotland the Procurator Fiscal fulfils many of the duties of the coroner, but he cannot hold a public inquiry. He interrogates the witnesses privately, and these questions with the answers form the precognition. More serious cases are dealt with by the Sheriff of each county, and capital charges must be dealt with by the High Court of Justiciary. In Scotland the verdicts of the jury may be 'guilty,' 'not guilty,' or 'not proven.'
2. The Magistrate's Court or Petty Sessions is also a court of preliminary inquiry. The prisoner may be dealt with summarily, as, for example, in minor assault cases, or, if the case is of sufficient gravity, and the evidence justifies such a course, may be committed for trial. The fee for a