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Welcome to Forensics Mr. Rizzo What is forensics Science?  Use of the scientific method in the legal arena.  The transfer of scientific techniques.

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Presentation on theme: "Welcome to Forensics Mr. Rizzo What is forensics Science?  Use of the scientific method in the legal arena.  The transfer of scientific techniques."— Presentation transcript:

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2 Welcome to Forensics Mr. Rizzo

3 What is forensics Science?  Use of the scientific method in the legal arena.  The transfer of scientific techniques to aid the legal process.  The use of science and technology to provide evidence.

4 When is forensics Science used? ??  To solve any problem whether criminal or historical in nature.

5 What is Evidence?  Must be relevant to the case at hand.  Must be more probative than prejudicial on the issue.  Probative evidence: tending to prove a particular proposition or to persuade you of the truth of an allegation

6 Forensic Evidence?  IT IS NOT CSI….  Is used to establish whether a particular person or thing COULD be at a particular place at a specific time.

7 The Powers of Observation Video: Know your brain awareness test Test your Brain!

8 #1

9 #2

10 #3.

11 Answering Histories Conundrums  St. Valentines Day massacre  Kurt Cobain  Salem witch trials

12 St Valentines Day Massacre February 14th,1929.

13 What we know  Seven men are killed in a garage on the North side of Chicago.  Ordered by Al Capone (in Miami at the time)  Planned by members of the Circus gang  Were sent to warehouse to kill George "Bugs“ Moran – Rival who also has possession of the lucrative North side booze business and as well as other rackets.  Moran not present

14 February 14th,1929. Victims and facts  6 Moran gangsters,1 Optometrist  A dog tied to a truck.  Multiple tire tracks leaving the area – But it was a garage  The killers weapons: – two Thompson submachine guns one with a 20 round clip one with a 50 round drum – Two shotguns are also part of the arsenal.

15  First carload of killers arrive at the back of 2122 North Clark obtain access to the garage.  Once inside they line up the Moran gang and relieve them of their weapons.  One of the fake cops then goes to the front and lets in the other set of non uniformed killers to unleash their hail of.45 bullets into the Northside boys.

16 Reenactments Video reenactment Correct? http://www.imdb.com/video/hulu/vi1237843993/

17 Reenactments

18 Frank Gusenberg handgun problem?

19 Problem?

20 Sgt. Thomas J. Loftus  Loftus knew the Gusenbergs real well.  Loftus arrived first at the scene and questioned Frank Gusenberg who was still alive in the garage.  Loftus asked "Do you know me Frank?'  Frank replied 'Yes, you are Tom Loftus'  Loftus then asks 'Who did it or what happened?'  Frank replies 'I won't talk'  The officer then replies 'You are in bad shape'  Frank says 'For God's sake get me to a hospital.'  Loftus tells Frank 'Pete is here too'  He said 'Yes' Loftus asks Frank if they were lined up against the wall, to this Frank answers again 'I won't talk.' Once transferred to Alexian Brothers Hospital,  Loftus asks Gusenberg another time and he refuses  Loftus asked Frank if three of the men wore police uniforms.  To this Frank answers 'Yes' and then dies.

21 Kurt Cobain Facts about Kurt Cobain's death  Found April 8th 1994 dead in his home in Seattle Washington on the second story of his garage (green house)  Barricaded in  Shotgun wound to the head. – face was still intact contrary to populure belief – 3 times the lethal dose of heroin in his blood stream – no finger prints on the gun, suicide note, or shell casing [as if they had bin wiped clean]

22 Excerpt from the Follow Up Report  Obvious trauma to his head. There is a Remington m-11 20 gauge shotgun between the victim’s legs with the barrel pointed towards his head and his left hand wrapped around the barrel. The shotgun is inverted with the trigger and magazine trap door pointing up. The barrel end is just above his beltline. There is a sent 20 gauge shell casing on top of a brown corduroy jacket which is on top of a beige nylon shotgun case. These are just to the left of the victim and under one of the stainless steel garden trays.

23 The Crime Scene

24 Excerpt from the Follow Up Report

25 The Crime Scene

26 Greenhouse door

27 Inside the Greenhouse  The stool police claim Kurt used to "barricade" himself in the room  greenhouse lock used to back up the story that Kurt "barricaded" himself in the Greenhouse

28 Remington m-11 20 gauge shotgun  The inverted shotgun distinguishing the orientation that relates to the scene diagram

29 Suicide Note Kurt Cobain's "suicide note"

30 Hieronymus Bosch 1450-1516 an eccentric Dutch painter of religious visions who dealt in particular with the torments of hell.

31 St. John on Patmos, approx. 1485 Make three observations:

32 St. Christopher Carrying the Christ Child through a Sinful World, Bosch, c1520

33 Temptatio n of St Anthony

34 Temptatio n of St Anthony (Detail)

35 Hieronymus Bosch Madman or Medical Analyst So we dig deeper and find that amputated limbs were saved during Bosch's time so they might be rejoined to their owners at the last judgment. Amputation is a gangrenous prevention The odd vegetable creature is painted in the shape of a mandrake root. Mandrake was the herb used to stanch the feverish pains of St. Anthony's Fire. The distillery used to reduce medicinal herbs.

36 As a Forensic Scientist what are some questions you would ask? Does he have any diagnosis medical or psychological conditions? Apocalyptic personality? What was also happening at that time?

37 Historians Know: What can be going on at that time? St. Anthony's Fire was rampant. fiery pain, hallucinations, disorientation, muscle cramps, convulsions, miscarriages, *gangrene Today we know that St. Anthony's Fire was caused by a form of Rye/grain fungus called ergot.

38 St. Anthony’s Fire: Ergot *Ergot of rye is produced by a lower fungus (Claviceps purpurea) that grows parasitically on rye, other grains and wild grasses.

39 Structural Analysis ergotamine Lysergic Acid

40 Serotonin Blocker? Serotonin (on the left) and Lysergic Acid ( on the right) *Serotonin is known to control mood, emotion, sleep and appetite

41 Structural Analysis Lysergic Acid Diethylamide Lysergic Acid (LSD)

42 Lysergic Acid Diethylamide (LSD)  LSD is one of the most powerful known hallucinogenic drugs. LSD  It was invented in 1938, derived from mushrooms.  SO WHO CARES?

43 Hieronymus Bosch Madman or Medical Analyst Bosch's Paintings actually documented beliefs and medical procedures used to assist with St. Anthony’s Fire. Amputation is a gangrenous prevention odd vegetable creatures= mandrake root The distillery used to reduce medicinal herbs.

44 Ergot in history  Furthermore, since ergot baked in bread dough forms LSD, the disease also led to terrifying hallucinations  Indeed there is the belief that the Salem witch-hangings that went on in Salem, Massachusetts (1692) occurred during an outbreak of rye ergot.

45 Salem Witch trials (June -September of 1692)  19 men and women were convicted of witchcraft and hung  100s of others faced accusations of witchcraft.  Dozens languished in jails.  1 man was pressed to death under heavy stones

46 Salem witch trials (1692) According to historian Mary Matossian in her book Poisons of the Past, she noted symptoms of the people to be sensations of: – Prickling or ants crawling on the skin – Distortions of the face – Paralysis – Hallucinations – Convulsive violent seizures – Dementia  All these symptoms were consistent with those suffering from ergotism.

47 Forensics  from L. forensis "of a forum, place of assembly," from forum.  Used in sense of "pertaining to legal trials," as in forensic medicine (1845).

48 I. Introduction What is forensics Science?  Use of the scientific method in the legal arena.  The transfer of scientific techniques to aid the legal process.  The use of science and technology to provide evidence.

49 Is Forensics a Sciences?  Biology Physiology, Odontology, Pathology  Chemistry Spectrophotometry, Thin layer Chromatography  Physics Friction, Ballistics, trajectory and motion  Geology Archeology, Mineralogy

50 Evidence?  Must be relevant to the case at hand  Must be more probative than prejudicial on the issue  Probative evidence: tending to prove a particular proposition or to persuade you of the truth of an allegation

51 History Of Detection  1879 Alphonse Bertillon: father of Criminal Identification developed Anthropometry – portrait parle  1892 Francis Galton: the first finger printer  1910 Edmond Locard: one of the first site based forensic labs – Locard’s Exchange Principle  1932, the FBI under J. Edger Hoover organized a national laboratory that aimed to offer forensic services to all law enforcement agencies in the country. – *at no expense

52 Placing the person there?  Anthropometry, portrait parle  Fingerprinting  Locard’s Exchange Principle  DNA Data bases  Brain Scans

53 II. History and Development Major Scientists: Sir Arthur Conan Doyle (1859-1893) influences? Sherlock Holmes 1887: *Used fingerprinting, firearms identification, serology, *Used a scientific method of detection

54 II. History  Locard’s Exchange Principle: The exchange of materials between two objects that occurs whenever two objects come into contact with one another.

55 II. History  Locard’s Exchange Principle:  The exchange of materials between two objects that occurs whenever two objects come into contact with one another.  First major case: Counterfeit coins  Analyzed metallic particles found in clothing, same as the counterfeit coins

56 II. History  Calvin Goddard: analyzed Firearms and refined bullet Identification by using a Comparison microscope.

57 III. Organization of a Crime Laboratory  Why  Why are their so many new lab? Increase in Drug analysis and DNA profiling: Bloodstains, semen stains, hair and saliva residue, bite marks,

58 III. Organization of a Crime Laboratory  Rapid growth yet lack of national and regional planning?  320 Public crime labs  Federal, state, county, municipal  Most placed under police dep.  Prosecutors/district attorney  Medical examiner or coroner

59 III. Organization of a Crime Laboratory  NO single law enforcement or investigative agency with unlimited jurisdiction so four major labs were set up:  FBI  Drug Enforcement Administration (DEA)  Bureau of Alcohol, Tobacco, Firearms, and Explosives  US Postal Inspection Service

60 Senator Daschle

61

62 New York Post

63  Identify at least six specific forensic units used to examine Senator Daschle’s letter.

64 III. Organization  Some states have developed a comprehensive STATEWIDE system of regional/satellites laboratories.  Alabama, California  Illinois Michigan  New Jersey Texas  Washington Oregon  Virginia Florida  Many of the larger cities also have their own crime labs. New York

65 IV. Services of the Crime Lab  Basic services

66  Basic Full service – Physical Science Unit – Biology Unit – Firearms Unit – Document Examination Unit – Photography Unit  Optional Services – Toxicology Unit – Latent Fingerprint Unit – Polygraph Unit – Voiceprint Analysis Unit – Evidence-Collection Unit IV. Services of the Crime Lab

67  Basic Full service – *Physical Science Unit – *Biology Unit – Firearms Unit – *Document Examination Unit – Photography Unit  Optional Services – *Toxicology Unit – *Latent Fingerprint Unit – Polygraph Unit – Voiceprint Analysis Unit – *Evidence-Collection Unit IV. Services of the Crime Lab

68 Basic Services: Physical Science Unit  Uses chemistry, physics and geology for: – Drug identification – Soil and mineral Identification – Examination of physical evidence

69 Basic Services: Biology Unit  Biologists and Biochemists are used for: – DNA identification and profiling of dried blood and other body fluids – The comparison of hairs and fibers – The comparison of Botanicals

70 Basic Services: Firearms Unit  Examination of: – Firearms and their discharged bullets – cartridge cases and shotgun shells  Garments and objects examined to determine type of gun and position of shooter.  And the comparison of marks made by tools

71 Firearms Unit  Close Contact Gunshot Wound -.380 ACP close range wound with powder burns.  Close Contact Gunshot Wound - muzzle flash injury from a M14 fitted with a flash suppressor

72 Firearms Unit  position of the shooter!! Historical case

73 Basic Services: Document Examination Unit  Ascertain documents authenticity  Analysis of: handwriting and typewriting – ink and paper – Visible depressions – Obliterations – Erasures – Burned and charred documents

74 Basic Services: Photography Unit  A complete photographic laboratory is maintained to examine and record physical evidence. – May use: digital imaging, infrared, Ultraviolet and x-ray photography techniques  Aids in court case photographic exhibits for court presentations

75 Optional Services: Toxicology Unit  Studies bodily fluids and organs to determine presence or absence of drugs and poisons. – Blood -alcohol

76 In your notes, Briefly discuss how and why a “Psychic Detective” – Could be justified, – Should be excluded as an expert witness in a court of law COURT TV

77 Optional Services:Latent Fingerprint Unit  Processing and examining evidence for *latent fingerprints. – Prints made by the deposit of oils and/perspiration/ It is invisible to the naked eye.

78 Optional Services: Polygraph Unit  AKA lie detector :an instrument that simultaneously records changes in physiological processes such as heartbeat, blood pressure, and respiration.  The underlying theory of the polygraph is that when people lie they also get measurably nervous about lying. The heartbeat increases, blood pressure goes up, breathing rhythms change, perspiration increases, etc.

79 Optional Services: Voice Print Analysis Unit  Use sound *spectrograph to identify voices – Telephoned threats – Taped recorded messages – Even basic identity *transforms speech into a visual graphic display, called a voiceprint.

80 Voice SCREAM Analysis Unit????

81 Optional Services: Evidence-collection Unit  Collects and preserves physical evidence that will later be processed at the crime lab.  Many officers also being train in the proper collection of evidence.

82 Other Forensic Services: Forensic Pathology  Investigation of sudden, violent or unexplained deaths  Usually preformed by a coroner  Questions sought to answer: – Who is the victim – What injuries are present – When did the injuries occur – Why and how were the injuries produced

83 Forensic Pathology *A trajectory analysis of JFK's inshoot/outshoot head wounds, *Shows an inconsistency with the HSCA trajectory conclusions.

84 Forensic Pathology  Autopsy performed to establish cause of death.  Classifications of Death *Natural *Homicide *Suicide *Accident *Undetermined

85 HW: Research and Identify How investigators estimate time of death..

86 Forensic Pathology 9 Ways of Estimating Actual Time of Death: http://www.dundee.ac.uk/forensicmedicine/llb/timedeath.htm#Time%20of%20Death 1.Rigor mortis 2. Livor mortis: (Lividity) 3. Algor mortis: Body Core Temperature 4. Potassium levels in vitreous humor + Clouding of the cornea 5. Stomach Contents 6. Evidence of Decompositional Process 7. Presence/absence of purge fluids 8. Drying of the tissue 9. Larval Instars

87 Forensic Pathology  Estimating Time of Death Rigor mortis 1. Rigor mortis: (L: rig- stiff; mortis—death) * Muscles become rigid ** W/I 24 hours but gone after 36 hours “The biochemical cause of rigor mortis is hydrolysis of ATP in the muscle tissue, the chemical energy source required for movement. Myosin molecules devoid of ATP become permanently adherent to actin filaments and muscles become rigid.”

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89 With the aid of an electron microscope it can be seen that each muscle fiber is made up of many smaller units, the myofibrils. Each myofibril consists of small protein filaments, known as actin and myosin filaments. The myosin filaments are slightly thicker and make up the dark band (or A-band). The actin filaments make up the light bands (I-bands) which are situated on either side of the dark band. The actin filaments are attached to the Z- line. This arrangement of actin and myosin filaments is known as a sacromere.

90 With the aid of an electron microscope it can be seen that each muscle fibre is made up of many smaller units, the myofibrils. Each myofibril consists of small protein filaments, known as actin and myosin filaments. The myosin filaments are slightly thicker and make up the dark band (or A-band). The actin filaments make up the light bands (I-bands) which are situated on either side of the dark band. The actin filaments are attached to the Z-line. This arrangement of actin and myosin filaments is known as a sacromere.

91 or ) or (postmortem lividity) : (L: liv-bluish) * Is a settling of the blood in the lower portion of the body ** Causing a purplish red discoloration of the skin. *** Discoloration does not occur in the areas of the body that are in contact with the ground or another object, 2. Livor mortis

92 * the reduction in body temperature following death. ** a steady decline until matching ambient temperature *** A measured rectal temperature can give some indication of the time of death. The Glaister equation: 1-1 1/2 degree F per hour Algor mortis is usually the first sign of death, beyond the obvious, and is then followed by rigor mortis. As decomposition occurs the internal body temperature tends to rise again. Newton's law of cooling states that the rate of cooling of a body is determined by the difference between the temperature of the body and that of its environment.Newton's law of cooling states that the rate of cooling of a body is determined by the difference between the temperature of the body and that of its environment. Algor mortis 3. Algor mortis (L: algor—coolness; ath)

93 4. Potassium levels in vitreous humor (ocular fluid) – after death, cells lining the inner surface of the eye release potassium into the ocular fluid, by testing at regular intervals, the forensic pathologist can determine the rate of potassium release and use that to approximate the time of death. 5. Amount of food found in the victim's stomach can be used to determine when the last meal was consumed and rates of digestion are known and are used to help estimate time of death.

94 What is an Expert witness?  An individual whom the court determines possesses knowledge relevant to the trial that is not expected of the average layperson

95 What MAKES an Expert witness?  Competency may be established: – Educational degrees – Formal training/ specific course work – Memberships – publications

96 Court Cases involving use of forensics in Judicial proceedings.  Frey v. United States  Daubert v. Merrell Dow Pharmaceutical, inc

97 Frey v. United States  Decision of admission of PROCEDURES, TECHNIQUES AND PRINCIPLES.  Depends on general acceptance by a “meaningful segment” of the scientific community  In practice, this approach required the proponent of a scientific test to present to the court a collection of experts who can testify that the procedure IS accepted by the relevant members of the “community”. 

98 Frey v. United States  IS accepted by the relevant members of the “community”.

99 Daubert v. Merrell Dow Pharmaceutical, inc  Decision of admission of PROCEDURES, TECHNIQUES AND PRINCIPLES.  Frye standard not absolute!!  Trial judges assume the must assume the ultimate responsibility as the: Gatekeeper!!!!  Principles must be  Tested  Peer reviewed  Low Percent error  Have a set techniques, maintenance and standard controls  Be Accepted

100 Kumko Tire v. Carmichael  Supported Daubert decision of admission of Procedures, techniques and principles, BUT also extended gatekeeper responsibilities as to the admissibility of EXPERT TESTOMONY.

101 Finis!

102 II. History and Development II. History and Development Major Scientists:  Mathieu Orfila: 1814 father of forensic toxicology.  Alphonse Bertillon: 1879 father of Criminal Identification -developed Anthropometry: a series of body measurements as a means of distinguishing one individual from another. -Used for two decades and was later replaced by fingerprinting. Forensic Timeline

103 II. History and Development  Francis Galton: 1892 the first finger printer – Undertook the study, classification and filing of fingerprints.  DR Karl Landsteiner: 1901 (4) blood types  Leone Lattes: 1915 developed a method of determining a blood type form a dried sample.

104 II. History and Development  Albert Osborn: 1910 developed the reference text for document examiners.  Walter C. McCrone: applied analytical problem solving techniques in solving forensic science cases by using microscopy. – Highly sought after and leading instructor that educated thousands in application microscopy.

105 II. History and Development  1893 Hans Gross: wrote one of the first comprehensive forensics texts applying the uses of many scientific disciplines.

106 II. History  Edmond Locard: – 1910: one of the first site based forensic labs. – Founder of Institue of Crimminalistsics at the universiy of Lyons  Developed Locard’s Exchange Principle

107 FBI lab  1932, the FBI under J. Edger Hoover  1932, the FBI under J. Edger Hoover organized a national laboratory that aimed to offer forensic services to all law enforcement agencies in the country. *at no expense*

108 FBI lab  One of the largest and most comprehensive forensic laboratories in the world.  Formed the FBI’s Forensics Science research and Training Center in 1981 Formed the FBI’s Forensics Science research and Training Center in 1981

109 FBI lab  Laboratory examiners provide expert witness testimony:  In cases regarding the results of forensic examination  Special Agent and support personnel assist domestic and international law enforcement agencies in large-scale investigations and disasters


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