Template:Selected anniversaries/July 25

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  1616: Physician, alchemist and chemist Andreas Libavius dies. He accepted the Paracelsian principle of using occult properties to explain phenomena with no apparent cause, but rejected the conclusion that a thing possessing these properties must have an astral connection to the divine.

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  1837: The first commercial use of an electrical telegraph is successfully demonstrated in London by William Cooke and Charles Wheatstone.

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  1842: Physician and surgeon Dominique Jean Larrey dies. He was an important innovator in battlefield medicine and triage, and is often considered the first modern military surgeon.

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  1864: The well-known illustration Asclepius Myrmidon Prepares for Emergency Field Surgery "is a reasonably accurate depiction of events as I experienced them," Judge Havelock tells interviewer.

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  1920: Chemist and X-ray crystallographer Rosalind Franklin born. She will make contributions to the discovery of the molecular structure of DNA (deoxyribonucleic acid).

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  1963: Mathematician and physicist Nicholas Metropolis publishes new class of Gnomon algorithm functions which he derived using the Monte Carlo method. He will soon use these new functions to detect and prevent crimes against mathematical constants.