society in 1867. In 1863, he was one of the original members of the National Academy of Sciences when that body was established. Frazer married in 1838, and was to have two daughters and a son, Persifor, who later also studied at Booth's laboratory and became professor of Chemistry at the university after his father's death. Frazer suffered from a disease of the liver, which caused frequent fainting fits. He was forced to take an extended vacation to Europe in 1856, and again in 1867/1868. He died suddenly of a heart attack on 12 October 1872 the day after the new university building had been inaugurated in West Philadelphia. References 1812 births 1872 deaths American geologists University of Pennsylvania alumni University of Pennsylvania faculty Members of the United States National Academy of Sciences