571. Address in ophthalmology: delivered before the Medical Society of the State of Pennsylvania, at its annual meeting held at Philadelphia, May, 1884 Author(s): Little, William S., author Publication: Philadelphia : Collins, printer, 1884 Subject(s): Eye ManifestationsReflex, Pupillary
572. Upon the formation of a deaf variety of the human race Author(s): Bell, Alexander Graham, 1847-1922 Publication: [Washington] : National Academy of Sciences, [1884?] Subject(s): Deafness -- geneticsMarriagePersons With Hearing Impairments -- statistics & numerical dataSelection, Genetic