More handpicked essays just for you.
An essay about the adventures of sherlock holmes
Characteristics of sherlock holmes
Sherlock holmes as detective fiction
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Sir Arthur Conan Doyle is perhaps one of the best-known authors in the world. If you are unfamiliar with him perhaps you 'll know his creations better. He was the original creator of Sherlock Holmes, a revolutionary detective who was far beyond his time and helped shaped modern forensics. The Sign of Four is a story takes place in India and while being an incredible story that gives much insight into the characters, looking at the story from a historical viewpoint gives us a view into the genus that is Sir Arthur Conan Doyle. The Sign of Four was written in 1890 a year after the bertillonage method was created and widely adopted. Fingerprinting wasn 't widely adopted until 1892 when it was used by Juan Vucetich to convict a woman who had …show more content…
Yet fingerprinting is Mr.Holmes prefered method of identification in The Sign of Four. Fingerprints were also used in the adventure of the Norwood Builder as well as in The Missing Years. In The Missing Years Mr.Holmes explains to Mr. Carvallo how he analyzed prints "In my work entitled Upon the Distinction and Classification of Human Finger and Thumb Prints I enumerate five main groups of characteristic details and other sub-classification by which fingerprints may be systematically classified and recorded." This is very similar to how we perform fingerprinting today by classifying them into patterns such as whirl, loop, tent and so on and so forth. The one predominant difference in today 's use of fingerprinting is the rule of twelve. This rule indicates in order for a match to be confirmed you must successfully identify twelve minutiae shared between the sample print and the print you are matching …show more content…
“If this paper remains blue, all is well. If it turns red, it means a man’s life.” He dipped it into the test-tube, and it flushed at once into a dull, dirty crimson.”
This wasn 't the only time the famed detective used toxicology, in one of Sir Arthur Conan Doyle 's for famous stories devil’s-foot root is entirely based upon the identification of a non deadly drug causing hallucinations. Some hypotheses believe the drug to be LSD do to similarities in effects it has on its users. The second reason some believe the mystery drug to be LSD is because LSD is created from a natural alkaloid it may be found in the fictional root that was being used to drug people.
In the classic Sherlock Holmes tale The Adventure Of The Dancing Men, a man and his wife have been shot in their study. The man has been killed by a bullet directly to the heart while the missus is in critical condition with a bullet lost within her
During a visit to Mexico, Gordon Wasson, a mycologist, discovered the use of psilocybin mushroom in spiritual ceremonies by Indian tribes. Upon experiencing the spiritual and hallucinatory effects of the mushroom, Wasson returned to the area accompanied by an experienced mycologist, Roger Heim, who managed to cultivate the mushroom once in France and send samples of it to the scientist who had discovered lysergic acid, Albert Hoffman. From the mushrooms, Hoffman successfully isolated two compounds which he further named psilocybin and psilocin. Analogs of these compounds were further synthesized and were employed mainly for psychotherapeutic uses. Many tests on psilocybin were made at Harvard University in the early 1960’s. However, along with LSD, psilocybin became a scheduled substance in 1970, making it illegal. During this time, psilocybin mushrooms became a part of the psychedelic and hippy movement and were used for recreational and spiritual purposes. Research on psilocybin ended in the late 1980’s because of strict rules imposed by the government but recently scientist have started researching on this chemical once more.
From the early days, with little literary reference material, to the current day, with substantially more, but still insufficient formation, the science of fingerprint identification has managed to maintain its credibility and usefulness. Although, academic institutions have yet to recognize the field as an applied science and include it in the curricula, which would provide directed research and literary reference, in libraries. Without this academic recognition, progress in the field of fingerprint is destined to be sluggish. Description of fingerprint identification as a forensic science’ or an ~app1ied science’ in no way implies that is not a reliable science. Fingerprint identification, correctly understood and applied, is just as scientifically valid and reliable as any other science and, indeed, more accurate than many. The fingerprint expert applies knowledge gained through training and experience to reach a conclusion. The many uses of fingerprint identification range from criminal investigation to non-criminal matters such as deceased, missing persons and disaster victim identification. Fingerprint identification has been used in the court systems for many years. Yet there are those who that still try to challenge fingerprint science and the experts in the court of law by a Daubert Hearing. In this paper, Daubert Hearing is define and detail outing background of the cases, the Government preparation, the Testimony from both sides, the judge’s verdict and finally, Mitchell’s second trial on this case.
Saltus, Richard. "DNA Fingerprinting: Its A Chance Of Probabilties." The Boston Globe 22 August 1994: 25.
A Swiss chemist named Dr. Albert Hoffman first produced lysergic acid Diethylmide –or best known as LSD in 1938 (Dye, 1992, p. 2). Hoffman discovered the drug while trying to synthesize a new drug for the treatment of headaches. He obtained the lysergic acid from the parasitic fungus that grows on rye plants known as ergot. From the lysergic acid, he synthesized the compound LSD. He used the compound to test for its pain killing properties on laboratory animals. Being that appeared totally ineffective, the bottle of LSD was placed on a shelf and remained untouched for five years.
By the 19th century, the criminology research scholars have had a keen interest in biometric identification, they hope to combine physical characteristics with criminal tendencies, which resulting in a series of measuring devices, and also collected a large amount of data. Since then, the concept of measuring a person's physical characteristics are finalized, fingerprints also become the identification of international methodological standards for public security agencies. People often debate whether fingerprints have absolutely unique, and also thought that the different countries have the different standard for identifying fingerprints. So far, it is still the most widely methods of public security organs, and the process is also automated.
The term forensic toxicology is defined as examination of all aspects of toxicity that may have legal implications (James & Nordby, 2009 p. 61). In the past, poisoning was one of the most popular forms of murder. There are countless natural substances in the world that when ingested into the body in high doses, can become lethal to the human body. What made this form of murder so famous is that most poisons mimic common medical diseases, leading physicians to believe a victim died of natural causes (Ramsland, n.d.). Aside from murder, this forensic discipline is also essential for determining accidental deaths and suicides.
The three different main types of fingerprints are Loops, Arches, and Whorls (Jackson 1). Henry Faulds is known as the Father of Fingerprints and developing fingerprints (Jackson 1). His discovery of fingerprints has made a huge impact not only in his time but, in Modern Crime Scene Investigation (Jackson 1). Without fingerprinting, it would be very difficult to convict criminals of crimes and very hard to try to process information. Crime Scene Investigators make a huge impact in Forensic Science. We need CSI workers, without them people could only imagine what crime would be like not only in our community, but in our
Fingerprinting information varies in numerous ways. Each person’s fingerprints are different in someway (Unique). The technical term is actually “DNA fingerprinting” because us as a person obviously cant just take a look at a fingerprint and see the difference; we must analyze the actual DNA behind it. Sometimes a miss concept of most people is, that fingerprints stay perfectly fresh for extended periods of time. Partial fingerprints and even degraded full fingerprints can turn up to be useless sometimes. Fingerprints are not admissible if they are 99.9% sure, they must be 100% or a Forensics lab will not support them. DNA Fingerprinting, and the fingerprints that are at the tips of your actual fingers are two different things. The ones we a...
Fingerprint usage dates back to the 1800s. Sir William Herschel used the prints as signatures on civil contracts, before they were found useful towards crimes (History of Fingerprints Timeline, 2012). A British surgeon, Dr. Henry Faulds, wrote about using fingerprints for personal identification. He first looked at prints on clay pottery and studied the ridges and patterns that they had made in the clay. In 1891, Juan Vucetich suggested to start fingerprinting criminals to keep the prints on record. The following year, Vucetich identified a print from a woman who killed her two sons. Investigators found her print and were able to correctly match her identity. Charles Darwin’s cousin, Sir Francis Galton, wrote and published the first book about fingerprints. He wrote about how every individual has a unique print by the certain traits of each fingerprint (History of Fingerprints, 2012). The popularity of fingerprints grew greatly in the United States in the early 1900s. Police departments and the FBI began to use the...
While hallucinogenic drugs have been used for centuries, it was not until the discovery by Western society of their mind-altering properties (Hofmann 1959; Stoll 1947; Delgado, Pedro L; Moreno, Francisco A) that these compounds began to be more widely used for treatment of mental disorders (see Abraham, Aldridge & Gogia 1996; Strassman 1995; Neill 1987; McGlothlin & Arnold 1971; Freedman 1968; Delgado, Pedro L; Moreno, Francisco A). Hallucinates are derived from plants or the fungus that grows on plants, the first recorded hallucination was a tossup between mental issues that were then used for a political push or the ergotamine during the Salem witch trails in 1962, far after that Albert Hofmann became the creator of LSD from ergotamine a chemical from the fungus ergot, in Switzerland 1938. From that time LSD has played a part in history, studies have shown that much has changed in the half-century since LSD was first used by psychiatrists and then found widespread recreational use in the 1960's and 70's. Modern psychiatry has embraced drugs that affect the same brain molecules that are tweaked by hallucinogens (Blakeslee,
Toxicology is the investigation of the unfavourable impacts of chemicals on living creatures. Forensic toxicology takes it above and beyond, including various related controls to aid in the location and elucidation of pills and harms poisons and drugs in medico legitimate passing examinations, human execution issues; e.g.,
· Griggs, E.A. & Ward, M. (1977): LSD toxcity: A suspected cause of death. J. Ky. Med. Assoc. 75:172-173.
...Mrs. Hiller found her husband dead. Investigators found some particles of sand and gravel by the daughters bed. They also found the fingerprints of the convicted killer Thomas Jennings, on the Hiller homes railings. Mr.Hiller had painted the railings hours before his death. Into the paint was four fingerprints of someone’s left hand. American Law enforcement had already adopted the principle of fingerprinting so the evidence was allowed to be presented in court. Fingerprinting expert William M. Evans had agreed that Jennings hand, his alone, was the prints left on the railing of the Miller’s home. The courts jury appealed Miller as guilty and he was later hanged. Fingerprinting is fairly new and they’ve helped find the culprit in many investigations carried out in America, therefore proving that our methods in solving crimes are better than the methods used before.
During the 19th century the study of fingerprints had emerged. The past few centuries we have had numerous developments in fingerprinting. A lot of people give this credit to Francis Galton, who conducted the first study of fingerprint patterns. Galton’s research showed that no two fingerprints are identical; his theory on fingerprints changed the world and the criminal justice system as a whole. Galton studied numerous fingerprints and came to the conclusion that not even identical twins will have the same fingerprints. This finding helped build the justice system and forensic science as we all once knew it. According to Galton fingerprint impressions fall into three different categories, they are loop, arch, and whorl. Another fingerprint known as latent print is a fingerprint that is formed by sweat. This type of fingerprint is not visible to the naked eye; usually a gray or black powder is used to pick up latent prints. Now that we know the three basic categories of fingerprinting, we must take a better look at how fingerprints are identified. Once we understand how they’re identified to others, we will look at some of the landmark cases that helped DNA become what it is today.
Forensic toxicologists have faced numerous challenges throughout the 1800’s and are still facing some of these challenges today. In Gettler’s and Norris’s time of being head of forensics in New York, they faced problems within toxicology study, and some out of toxicology. One of their main problems was metabolizing a poison and determining the lethal dose.