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
The Valentine and Textile" exhibit shows vintage clothes. The Valentine has several rotating exhibitions that include photographs, clothes and textiles and historical based exhibits that impacted Richmond in a significant way. The Valentine The Valentine is a museum in Richmond, Virginia dedicated to the history of the city. Founded by Mann S. Valentine II 1898, it was the first museum in Richmond. The Valentine offers exhibitions that focus on "American urban and social history, costumes and textiles, decorative arts and architecture." The Valentine also includes the 1812 neoclassical Wickham House, a National Historical Landmark. In 2014, the Valentine completed a $4.1 million