2 autograph letters signed.
8vo. Together (4+2=) 6 pp.
Two letters to a colleague, concerning a planned journey to Lyon and the "association scientifique" in Paris.
Paul Broca is best known for his research on "Broca's area", a region of the frontal lobe that is named after him. His work revealed that the brains of patients suffering from aphasia contained lesions in a particular part of the cortex, in the left frontal region. This was the first anatomical proof of localization of brain function. Broca's work also contributed to the development of physical anthropology, advancing the science of anthropometry.