Sir Thomas Lauder Brunton was born on March 14, 1844 in Bowden, Roxburghshire (in Scotland, near the English border) to James Brunton and his wife Agnes. There are conflicting accounts of his early education, some saying he studied privately and others that he studied at the parish school and then a school at Melrose. He went to Edinburgh University where at his father's urging he began to study law. Taking classes in chemistry and physics in his spare time he soon became so interested in them that he changed his focus. He qualified in 1866, taking the M.B, C.M.Edin. degree with honors and M.D. in 1868 with honors for his thesis on "Digitalis, with some observations on the urine". For a year (1866-67) he served as house physician at the Royal Infirmary, Edinburgh.
After his education he went abroad, intending to visit places mentioned in the story of Joseph from the Bible, visiting Egypt and Syria. He continued his travels visiting Turkey, Greece and Italy. he went to Vienna, where he did laboratory work on digitalis (he never published his results), Berlin, where he analyzed the nuclei of blood cells, Amsterdam and Leipzig where he was one of the first students to be admitted to Carl Ludwig's new institution. It was there that he worked studying arterioles and capillaries making experiments on the effects of amyl nitrate and sodium nitrate. It is the use of amyl nitrate for the relief of angina pectoris that he is chiefly remembered for (drawing on the work of Arthur Gamgee and Benjamin Ward Richardson). Inhaled amyl nitrate causes vasodilation in the coronary arteries and reduced systemic resistance to blood flow.
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