Photograph of Science [female student, wearing sandals and classical style dress/chemise under gown, with long plat, in science laboratory with scull, specimen jars, test tubes chemical symbols on blackboard:HK/O + CO = CHKO2 [= potassium formate]; full length] [John Johnson 912] [by William Parkinson of Oriel College]; Thomas Shrimpton & Son publ., [c.1882]