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Methods used during Dostoyevsky's time were Thumb Prints
A lie detector
they would focus on fingerprints and any poisons
Ballistic testing to match the caliber of bullet used
and lastly forensic science -
Hemin is an iron-containing porphyrin with chlorine that can be discovered that blood pigments can form microscopic crystals that was another technique that was used during Dostoyevsky's time.
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The Heme is a technique that was used during Dostoyevsky's time that gives myoglobin and hemoglobin the ability to bind oxygen because of the presence of an iron atom.
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Arsenic can combine with other elements to form inorganic and organic arsenicals. In general, inorganic derivatives are regarded as more toxic than the organic forms.
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The telegraph was a device used to measure frequencies and heart rate and a bunch of other things it measure to tell if you are being truthful with answering a question or to see if you are telling the truth about something.
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He was able to identify Francisca Rojas, a woman who murdered her two sons and cut her own throat in an attempt to place blame on another.
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Dr. Alec Jeffrey developed DNA evidence
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The first person to be convicted by DNA evidence was a rapist