Definition of Forensic Science
Forensic Science constitutes the multidisciplinary application of scientific methodologies, analytic techniques, and empirical principles to elucidate legal questions within the jurisprudential framework. Etymological Derivation: The nomenclature is derived from the Latin adjective "forensis," signifying "of or pertaining to the Forum." 


History & Development of Forensic Science

The evolution of forensic praxis spans from rudimentary methodologies in early civilizations to highly sophisticated, technology-driven analytical paradigms.
1. Global Chronological Evolution of Forensic Disciplines

Historical development of forensic science:

Year

Key Proponent(s)

Scientific Contribution / Paradigm Shift

1248

Chinese Treatise

Hsi Duan Yu documented the differential medicolegal diagnosis between strangulation and drowning asphyxiation.

1609

François Demelle

Published the first systematic treatise on the methodological examination of questioned documents.

1686

Marcello Malpighi

Documented the morphological characteristics of friction ridge skin (papillary ridges).

1810

German Jurisprudence

First documented application of chemical ink dye analysis on the Konigin Hanschritt document.

1813

Mathieu Orfila

Published Traite des Poisons; establishing the foundational principles of modern forensic toxicology.

1823

J.E. Purkinje

Formulated a topological classification taxonomy for friction ridge patterns based on nine major typologies.

1828

William Nichol

Invented the polarizing light microscope, revolutionizing microscopical analysis of birefringent materials.

1831

Leuchs

Elucidated the enzymatic activity of amylase in human saliva.

1835

Henry Goddard

First application of comparative microscopical bullet analysis to effectuate criminal identification.

1836

James Marsh

Developed the Marsh Test for arsenic detection; the first toxicological assay admitted into jury trial jurisprudence.

1839

H. Bayard

Established reliable microscopical protocols for the identification of spermatozoa.

1851

Ludwig Teichmann

Developed the microcrystalline test for hemoglobin utilizing hemin chloride crystals.

1854

Maddox

Pioneered dry plate photography, facilitating evidentiary documentation.

1856

Sir William Herschel

Implemented thumbprint impressions on contractual documents to prevent repudiation.

1862

J. Van Deen

Formulated a presumptive color test for blood utilizing the guaiac resin.

1863

Schönbein

Discovered the hemoglobin-mediated oxidation of hydrogen peroxide (basis of presumptive blood testing).

1864

Odelbrecht

First systematic application of photography for criminal identification and crime scene documentation.

1877

Thomas Taylor

Proposed the utility of palmar and digital friction ridges for criminal identification purposes.

1879

Rudolph Virchow

Conducted the first systematic microscopic examination of hair, acknowledging its forensic limitations.

1880

Henry Faulds

Postulated the utility of latent fingerprints at crime scenes for suspect identification.

1883

Alphonse Bertillon

Invented Anthropometry (Bertillonage), utilizing somatic metric measurements for criminal identification.

1887

Arthur Conan Doyle

Published the first Sherlock Holmes narrative, popularizing scientific criminal investigation.

1889

Alexandre Lacassagne

First to individualize fired projectiles to a specific weapon's bore through striation analysis.

1891

Hans Gross

Coined the term "Criminalistics"; recognized the systemic utility of physical evidence.

1892

Francis Galton

Published Fingerprints, statistically establishing the individuality and persistency of friction ridges.

1892

Juan Vucetich

Devised a dactyloscopic classification system adopted throughout Latin America.

1896

Sir Edward Henry

Formulated the 10-print dactyloscopic classification system utilized in Europe and North America.

1898

Paul Jeserich

Utilized photomicrography for comparative bullet analysis of individualized minutiae.

1900

Karl Landsteiner

Discovered the human ABO blood group antigen system (awarded Nobel Prize, 1930).

1901

Paul Uhlenhuth

Developed the precipitin test, enabling species-of-origin differentiation for bloodstains.

1901

Henry P. DeForrest

Implemented the first systematic dactyloscopic identification system in the USA (NY Civil Service).

1902

Prof. R.A. Reiss

Instituted one of the first academic forensic science curricula.

1903

NY State Prison

Implemented systematic dactyloscopic identification for criminal records, superseding anthropometry.

1904

Oskar & Rudolf Adler

Developed the benzidine presumptive test for blood.

1904

Edmond Locard

Formalized the Locard's Exchange Principle: "Every contact leaves a trace."

1906

Theodore Roosevelt

Established the Federal Bureau of Investigation (FBI).

1910

Albert S. Osborne

Published Questioned Documents, establishing the foundational text for document examination.

1912

Masao Takayama

Developed the hemochromogen microcrystalline assay for hemoglobin.

1913

Victor Balthazard

Published seminal research on the individualization of projectile striations.

1915

Leone Lattes

Developed the antibody-based ABO grouping assay for dried bloodstains.

1918

Edmond Locard

Established the quantitative threshold of 12 matching minutiae points for positive dactyloscopic identification.

1920

Charles E. Waite

Initiated the cataloging of firearm manufacturing data.

1920s

Georg Popp / Luke May

Pioneered forensic botany / striation analysis in toolmark comparison.

1920s

Calvin Goddard et al.

Perfected the comparison microscope for comparative ballistics analysis.

1921

Larson & Keeler

Designed the portable polygraph (cardio-pneumo-psychograph).

1923

Vittorio Siracusa

Developed the absorption-elution assay for ABO typing of denatured bloodstains.

1924

August Vollmer

Instituted the first U.S. police crime laboratory.

1925

Saburo Sirai

Discovered the secretion of group-specific antigens into non-blood body fluids.

1927

Landsteiner & Levine

Elucidated the M, N, and P blood group antigen systems.

1928

Meüller

Identified salivary amylase as a presumptive marker for salivary stains.

1931

F.J. Holzer

Developed the absorption-inhibition ABO typing technique.

1932

FBI

Establishment of the federal crime laboratory.

1935

Frits Zernike

Invented the phase contrast microscope (Nobel Prize, 1953).

1938-1946

Various

Discovery of Haptoglobin, Lewis, Kell, Duffy, and Kidd blood group systems.

1941

Murray Hill

Initiated research in voiceprint identification (acoustic spectrography).

1945

Frank Lundquist

Developed the acid phosphatase assay for semenogelin detection (semen).

1950

Max Frei-Sulzer

Developed the adhesive tape lift methodology for trace evidence collection.

1950

AAFS

Establishment of the American Academy of Forensic Science.

1953

Paul Kirk

Published Crime Investigation, integrating forensic science into criminalistics theory.

1954

R.F. Borkenstein

Invented the Breathalyzer for exhaled ethanol quantification.

1958-1959

Weiner et al. / Hirshfeld

Introduced H-lectin for O-typing / Identified polymorphic Group specific components (Gc).

1960

Lucas

Applied Gas Chromatography (GC) for the identification of petroleum distillates.

1960s

Maurice Muller

Adapted the Ouchterlony antibody-antigen diffusion assay for precipitin species testing.

1963-1975

Various

Discovery of polymorphic isoenzymes (EAP, PGM, AK, ADA, ESD, GLO) enabling bloodstain phenotyping.

1966-1971

Culliford et al.

Developed immunoelectrophoretic and gel-based methodologies for isoenzyme typing of dried bloodstains.

1974

Wessel, Jones, Kwan, Nesbitt, Rattin

Developed Gunshot Residue (GSR) detection using SEM-EDX (Scanning Electron Microscopy with Energy Dispersive X-rays).

1977

FBI / Forensic Labs

Introduction of Automated Fingerprint Identification System (AFIS) / Adaptation of FTIR.

1984

Alec Jeffreys

Developed the first DNA profiling technique utilizing Multilocus RFLP (Restriction Fragment Length Polymorphism).

1986

Jeffreys / Erlich

First forensic application of DNA to apprehend Colin Pitchfork / Developed HLA DQα (DQA1) PCR typing kit.

1987

Tommy Lee Andrews

First U.S. criminal conviction utilizing RFLP DNA profiling.

1988

Various

Standardization of Homogeneous Enzyme Immunoassay (EMIT) for systemic drug detection in whole blood.

1990

K. Kasai et al.

Suggested the D1S80 locus (pMCT118) for PCR-based forensic DNA analysis.

1991

Walsh Automation

Developed the Integrated Ballistics Identification System (IBIS) for automated striation comparison.

1992

Caskey / FBI

Suggested Short Tandem Repeats (STR) for DNA analysis / FBI developed Drugfire database.

1993

Daubert et al. v. Merrell Dow

Relaxed the Frye standard; established the judge as the "gatekeeper" of scientific admissibility.

1994-1999

Roche Molecular / FBI

Release of polymarker DNA kits / Implementation of NIDIS and IAFIS databases.

 2. Historical Evolution of Forensic Science in India

• Antiquity: Forensic principles trace back to Kautilya's Arthashastra (~2300 years ago). Indians historically recognized the persistency and individuality of friction ridges (Tarija), utilizing them as biometric signatures.

• 1849: Inauguration of the first Chemical Examiner’s Laboratory in Madras (subsequently in Calcutta 1853, Agra 1864, Bombay 1870) for toxicological and chemical analysis of biological matrices.

• 1879: Establishment of the Anthropometric Bureau in Calcutta utilizing Bertillonage.

• 1897: Establishment of the world's first Fingerprint Bureau in Calcutta. Sir Edward Henry, with mathematical formulations by Khan Bahadur Azizul Huq and subclassification systems by Rai Bahadur Hem Chandra Bose, officially replaced anthropometry with dactyloscopy. India became the first nation to adopt sole dactyloscopic identification.

• 1898: Department of Explosives established in Nagpur, with regional offices (Calcutta, Bombay, Agra, Madras, Gwalior) and sub-offices (Sivakasi, Domia, Asansol).

• 1902: Establishment of Calcutta CID. Rai Bahadur Pandit Shambhu Nath recognized as the Father of Indian CID.

• 1904: Inauguration of the Government Examiner of Questioned Documents (GEQD) in Kolkata, headed by C.R. Hardless; relocated to Shimla in 1906 under F. Brewester.

• 1905: Central Finger Print Bureau (CFPB) established in Shimla on the recommendation of the Royal Police Commission. Abolished in 1922 (Inchcape Committee), reinstated in Delhi (1955) under the Intelligence Bureau (IB).

• 1910: Kolkata Serology Department established for serological and hematological analysis. Later renamed the Office of Serologist & Chemical Examiner to the Government of India.

• 1915 / 1917: Inauguration of the Footprint Section and Note Forgery Section under the Bengal CID.

• 1930: Establishment of a localized Ballistics Laboratory in Calcutta.

• 1933: CFSL Chandigarh originated as a Scientific Section in Lahore; relocated to Phillaur (1948), then Chandigarh (1961); subsumed by the Government of India in 1978.

• 1952: Inauguration of the first State Forensic Science Laboratory (SFSL) in Kolkata.

• 1956: Central Detective Training School (CDTS) established in Calcutta.

• 1957: Establishment of the first Central Forensic Science Laboratory (CFSL) in Calcutta.

• 1960: Establishment of the Indian Academy of Forensic Science (IAFS).

• 1965: Second CFSL established at Hyderabad (Osmania University campus).

• 1971: Institute of Criminology and Forensic Science (ICFS) established in Delhi (later LNJN NICFS).

• 1983: Creation of the post of Chief Forensic Scientist and the Forensic Science Directorate under BPR&D (on recommendation of Dr. V.K. Street, UK).

• 1998: Inauguration of the first Forensic DNA Typing facility at CFSL Kolkata.

• 2007: Inauguration of India’s first independent (non-governmental) FSL, Truth Labs, in Hyderabad by Dr. K.P.C. Gandhi, achieving ISO 9001 and ISO 17025 accreditation.

3. Scope of Forensic Science

The ambit of forensic science is multidisciplinary and continually expanding in tandem with technological paradigms.

• Criminalistics: The forensic analysis, comparison, and identification of physical evidence (e.g., trace evidence, ballistics, biological fluids).

• Forensic Toxicology: The qualitative and quantitative analysis of xenobiotics, poisons, and pharmacological substances in biological matrices.

• Forensic Biology & Serology: The immunological and genetic analysis of biological evidence, including species origin and DNA profiling.

• Questioned Document Examination: The analysis of altered, forged, or obliterated documents through ink analysis, paper analysis, and handwriting comparison.

• Forensic Ballistics: The examination of firearms, ammunition, and projectile terminal ballistics.

• Jurisprudential Admissibility: Providing empirical, objective scientific testimony to assist the judiciary in establishing guilt or innocence beyond reasonable doubt.
  
  
  IMPORTANT TOPICS
  
  Syndromes

  Syndrome	Definition
  Caffey's Syndrome Caffey kempe syndrome Battered baby Syndrome	A condition where baby is beaten repeatedly by parents.
  Tardieu's syndrome	Repeated intentional injuries inflicted on infants and young children, usually by their parents (most often), guardians,
  Munchausen syndrome by proxy	Mother deliberately causing injuries to child to get attention.
  Whiplash syndrome	neck injury due to forceful, rapid back-and-forth movement of the neck, like the cracking of a whip.
  Whiplash shaken infant syndrome	syndrome involves vigorous manual shaking of infants by the extremities or shoulders, with whiplash-induced intracranial and intraocular bleeding,
  Cafe coronary syndrome	fatal choking on food: an autopsy approach.
  Magnan's Syndrome	Formication; Tactile hallucination involving the sensation that food grains are lying or tiny insects are crawling over the skin.
  Body packer syndrome	persons engaged in smuggling of cocaine or other drugs fill the drug in balloon or condom or polythene bag and swallowed to conceal the contraband
  Body stuffer syndrome	the person who smuggled cocaine or other drugs, on the verge of being arrested for possessing cocaine, swallows the drug to conceal the evidence.
  Wernicke syndrome	severe thiamine deficiency (Vit. B-1) persistent vomiting
  Wernicke - Korsakoff syndrome or Korsakoff syndrome	Severe, untreated thiamine deficiency organic amnestic syndrome pathological lesion alcohol dementia
  Patau syndrome	A condition in which a person has an extra chromosome 13.Person has extra genetic material
  Turner syndrome	It is a chromosomal disorder in which a female is born with only one X chromosome Turner syndrome (TS), also known as 45,X or 45,X0, is a condition in which a female is partly or completely missing an X chromosome.
  Down syndrome	A genetic chromosome 21 disorder causing developmental and intellectual delays. simian crease
  Marfan syndrome	Marfan syndrome is a genetic disorder(inherited disorder).It's  features may include: Tall and slender build Disproportionately long arms, legs and fingers A breastbone that protrudes outward or dips inward A high, arched palate and crowded teeth Heart murmurs Extreme nearsightedness An abnormally curved spine Flat feet
  Bobbit syndrome	Mutilation of penis by female partner
  Klinefelter syndrome or KS	genetic condition in which a male is born with an extra copy of the X chromosome 47XXY
  Nephrotic syndrome	A kidney disorder that causes the body to excrete too much protein in the urine.
  Capgras syndrome or imposter syndrome	irrational belief that someone they know or recognize has been replaced by an imposter.
  Clerambault syndrome.   or    Erotomania	delusional belief that a person is in love with the affected individual, despite contrary evidence
  Fregoli syndrome	person holds a delusional belief that different people are in fact a single person who changes appearance or is in disguise. ...  Like Capgras delusion,
  Syndrome of intermetamorphosis	patients believing that they can see others change into someone else in both external appearance and internal personality.
  Marchiafava-Bignami disease (MBD)	disorientation, epilepsy, ataxia, dysarthria, hallucinations, spastic limb paralysis, personality and intellectual deterioration Caused by demyelination of the corpus callosum.
  Zinsser Cole engman	Aka Dyskeratosis congenita (DKC), the triad of abnormal skin pigmentation, nail dystrophy, and leukoplakia of the oral mucosa, progressive congenital disorder(birth defect)
  Reye's syndrome	develop in children < 15 years on intake of Aspirin.   acute onset of hepatic failure (liver failure) and  encephalopathy with residual neurological manifestations
  Nephritic syndrome	collection of different signs and symptoms that  occur as a result of inflammation in the kidneys.  inflammation causes the kidneys to work less effectively.  causes protein and red blood cells to leak from the bloodstream into the urine Increased by intake of Mercury
  Noonan Syndrome	Unusual facial characteristics, short stature, heart defects present at birth, bleeding problems, developmental delays, and malformations of the bones of the rib cage
  Apert syndrome	Premature fusion of certain skull bones (craniosynostosis)
  Cri-du-chat Syndrome	caused by a partial deletion of chromosome 5p  characterized by a high-pitched, catlike cry in infancy  growth failure, simian crease, microcephaly facial abnormalities, micrognathia, and mental retardation.
  Sheehan Syndrome	occurs due to necrosis of the pituitary gland hypopituitarism resulting from postpartum hemorrhage and hypovolemic shock
  Virilizing ovarian tumor	rare cause of hyperandrogenism( male hormones)  in women, and account for < 5% of all ovarian neoplasm
  Ovarian dysgenesis	rare type of female hypogonadism in which no functional ovaries are present to induce puberty in an otherwise normal girl  karyotype is found to be 46, XX
  Winchester Syndrome
  Rokitansky-kuster-hauser syndrome
  Congenital Virgil syndrome
  Panhypopituitarism
  Guillain Barre syndrome
  Bywater Syndrome	Aka crush syndrome It occurs at the later stage of crushed limb  Renal failure is one of the most serious complications  The necrotic muscles excrete acid metabolites
  Cotard Syndrome	Person has delusion that he is dead, does not exist, putrefying etc in

  Crime	Detected by	Details
  Ted Bundy	Bite Marks	Aka Vampire Rapist Serial Killer
  Buck Roxten	Forensic Entomology	Aka Body under bridge & Jigsaw murders
  Bhawal Sanyasi	Physical Characteristics
  Parkman Webster	Dental Evidence & Bone Fragments
  Tandoor Case	DNA evidence & Gun Shots
  Umbrella Murder Case	Castor seeds	Georgi Markov(Victim)
  Lindbergh Kidnapping	Handwriting
  Atlanta Child Murders	Fibre
  Howard Hughes Hoax	Voice Identification
  Night Stalker(Richard Ramirez)	Fingerprints
  Machine Gun(George) Kelly	Fingerprints
  Green River(Gary Ridgway)	DNA Identification
  Bind Torture Killer(Dennis Rader)	Data Recovery
  John Jobert	Hair & Bite Marks
  Jeffrey Macdonald	Crime Scene Reconstruction
  Kangali Charan	Fingerprints	Investigated by Edward Henry
  Colin Pitchfork	DNA Fingerprinting	1st person convicted using this technique
  Sanjeev Nanda	Skid Marks	Hit & Run Case
  Priyadarshini Mattoo	DNA Fingerprinting
  Shakereh Khaleeli	DNA Fingerprinting & Skeletal remains	1st DNA test in India & 1st Exhumation to be video recorded
  Geeta & Sanjay Chopra Kidnapping & Murder	Hair, Blood, Fingerprint, Signature & Skiagram
  Francis Rojas	Fingerprint	1st to charged on the basis of Fingerprint Juan vucetich & Alvarez
  Jennings	Fingerprint	Investigated by Mary Holland
  Basauri	Fingerprint
  Pancham Shukla	Fingerprint
  Rajakawa	Fingerprint

  
  Important Books & Authors

  Author	Books	Field
  Wilson R. Harrison	Suspect document	Documentation
  Oscar Amoedo	L'Art Dentaire en Médecine Légale
  Goode and Morris.	Scott's Fingerprint Mechanics
  Paul kirk	Fire investigation, crime investigation
  Soderman,John colonel	Modern Criminal Investigation
  Has gross	Criminal investigation:a practical handbook for magistrate
  O'Hara and osterberg	Introduction to criminalistics
  Jillian Hatcher	Hatcher's notebook (ballistics)
  Krogman	Human skeleton in forensic medicine
  A.s . Osborn	Questioned documents The problem of proof Questioned documents problem	Documentation
  O. Hilton	Scientific Examination of Questioned Documents	Documentation
  Headrick & Huber	Handwriting Identification : Facts and Fundamentals	Documentation
  Francis Galton	Fingerprints
  Richard Henry	Fingerprints & its Classification
  John Tedrow	Forensic Geology
  Jennifer McKinley	Geoforensics
  Elisa Bergslien	Geoscience
  Alphonse Bertillon	Signaletic Instructions Including the Theory and Practice of Anthropometric identification La Photographie Judiciaire: Avec Un Appendice Sur La Classification Et l'Identification Identification Anthropometrique: Instructions Signaletiques
  B.J.Culliford	The examination & typing of blood stains”
  D.R. Redsicker	Basic Fire and Explosion Investigation
  E.R. Menzel	“Fingerprint Detection with Laser”
  Rudolph Reise	Judicial Photography
  W. Greener	The Gun and it's development
  Burrard	Identification of firearm and forensic ballistics
  J. H Mathew	Firearm identification
  M. Jauhari	Identification of firearms, ammunitions and firearm injuries
  V. Hogg	The cartridge guide
  Wilton M. Krogman	Human Skeleton in Forensic Medicine

  
  
  Abbreviations
  
  
  

  ACE-V	Analysis, Comparison, Evaluation and Verification
  BARTS	Biological Agents Real Time Sensors
  BCCH	Broadcast Control Channel
  CAGE	Computer Aided Glass Evaluation
  NRDFC	Natural resources DNA Profiling and forensic science
  UNITREX	Universal Trace Residue Extractor
  ASE	Accelerated Solvent Extractor
  ACPO	Association of Chief Police Officers
  AFR	Automatic Fingerprint Recognition (Computer system)
  CCTV	Closed Circuit Television
  Crime Desk	Manages the admin side of all crimes reported & supplies crime numbers to the victim/insurance company
  CID	Criminal Investigation Department (plain clothes department)
  CSC	Crime Scene Coordinator
  CJD	Criminal Justice Department
  CJPO	Criminal Justice & Public Order Act 1994
  CPA	Crime Pattern Analyst
  CTU	Chemical Treatment Unit (in-force laboratory also known as "SAS”)
  ESLA	Electro Static Lifting Apparatus (for lifting latent shoe marks)
  FLINTS	Forensic Led Intelligence system (Computer system)
  Livescan	Real-time computer checking of fingerprints using a scanner
  NABIS	National Ballistics Intelligence Service – Provides both intelligence & evidence
  NAFIS	National Automated Fingerprint Identification System (replaced AFR)
  NDNAD	National DNA Database
  Phoenix	An application on PNC allowing criminal justice agencies to have access
  PSDB	Police Scientific Development Branch (Government Agency)
  RPAS	Remotely Piloted Aircraft Systems
  Shoemark	Computer system for identification & intelligence in relation to footwear
  SICAR	Shoemark Identification and Retrieval System (Computer system)
  Treadmark	Computer system dealing with intelligence & identification of footwear
  VCSE	Volume Crime Scene Examiner
  Viper	Computerised ID Parade system