Medical milestones, landmark publications, and notable births and deaths associated with July 19.

Events

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Births

1900 – Charles Skinner Hallpike (1900-1979), English otologist. Described the Dix-Hallpike Test (1952) and Peep-Show technique for pure tone audiometry (1947)

1934– Ann J. Johanson (1934-2020), American pediatric endocrinologist; described Johanson-Blizzard Syndrome (1971)

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Deaths

1861 – Francis Rynd (1801-1861), Irish surgeon. Pioneered subcutaneous (hypodermic) opiate injection for neuralgia (1844) and the Rynd hypodermic needle (1861)

1975 – Winifred Mayer Ashby (1879-1975), English born, American pathologist. Described the Ashby technique (1919) for determining the volume and life span of red blood cells in humans.

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Further reading