Template:Selected anniversaries/July 25
1837: The first commercial use of an electrical telegraph is successfully demonstrated in London by William Cooke and Charles Wheatstone.
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.
1920: Chemist and X-ray crystallographer Rosalind Franklin born. She will make contributions to the discovery of the molecular structure of DNA (deoxyribonucleic acid).
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.