101 & 13 pages (pp. 145-245 & pp. 140-152). IN: Virchow's Archiv fur Pathologische Anatomie und Physiologie, vols. 68 & 70. Slim 8vos, modern wrappers. Berlin, 1876-1877.
Friedreich was the first to describe a form of ataxia ("Freidreich's ataxia"), hereditary, attended with impairment of speech, lateral curvature of the spine, and with paralysis of the muscles of the lower limbs. The titles of the last two papers vary. GM 4696. Extremely rare work in its complete state.
Edition: First Edition