Penicillin nontoxic in humans by first performing toxicity tests in animals and then on humans. His subsequent experiments on penicillin's response to heat and pH allowed Fleming to increase the stability of the compound. The one test that modern scientists would find missing from his work was the test of penicillin on an infected animal, the results of which would likely have sparked great interest in penicillin and sped its development by almost a decade. The importance of his work has been recognized by the placement of an International Historic Chemical Landmark at the Alexander Fleming Laboratory Museum in London on
Valentine's Day on January 25 instead of (or as well as) Valentine's Day. The day commemorates St Dwynwen, the Welsh patron saint of love. The Welsh name for Saint Valentine is 'Sant Ffolant'. On Saint Valentine's Day in Ireland, many individuals who seek true love make a Christian pilgrimage to the Shrine of St. Valentine in Whitefriar Street Carmelite Church in Dublin, which is said to house relics of Saint Valentine of Rome; they pray at the shrine in hope of finding romance. There lies a book in which foreigners and locals have written their prayer requests for love. In Finland Valentine's