for rheumatism and neuralgia. However, financial difficulties forced her to return to the United States to look for work. Lloyd supported herself for some time as a science teacher at the Chestnut Street Female Seminary before making the decision to formally pursue her interest in chemistry. From 1875 to 1883, Lloyd attended seven courses in chemistry and audited several botany courses at the Harvard Summer School. She conducted research with Charles F. Mabery and in 1881, published their research in the Proceedings of the American Academy of Arts and Sciences and the American Chemical Journal. This was the first time a woman authored a chemical paper in a major publication. She continued her research and coauthored three published papers between the years of 1881–1884. It was in these years that Lloyd met Rachel Bodley, her future colleague in the American Chemical Society, and, in 1880, Hudson Henry Nicholson, her future colleague at the University of Nebraska. Lloyd continued to teach including at the Louisville School of Pharmacy for Women in Kentucky. In 1884, Lloyd decided to study at the University of Zurich, which at the time was the only institution where women were permitted to attempt a doctorate in chemistry. Lloyd was awarded her doctorate in 1886, at the age of 48, and became the first American woman to receive a doctorate degree in chemistry. Her dissertation was on the conversion of phenols to aromatic amines under Professor August Viktor Merz. During this time, she also became interested in the emerging sugar beet industry. Career Teaching Lloyd began teaching immediately after finishing her early education at Miss Margaret Robinson's School for Young Ladies. Her next teaching position would be at the Chestnut Street Female Seminary in 1873 where she taught chemistry following her travels in Europe. During her time as a student Lloyd still held multiple positions at other educational institutions. In 1880 Lloyd held the position of Lady Principal of Foster School for Girls in Clifton Springs, New York. Following this she was an Instructor of Chemistry at both Hampton College for Women and the Louisville School of Pharmacy for Women. Lloyd worked for a small period of time at the Normal School of Science and Royal School of Mines in London before her most notable position in 1887 at the University of Nebraska. In 1894 Lloyd was the Instructor of Science at Hillside Home School in Spring Green,