TYNDALL, JOHN. Heat considered as a Mode of Motion: Being a Course of Twelve Lectures. New York, 1865 -- Light and Electricity: Notes of two Courses of Lectures... New York, 1871 -- Contributions to Molecular Physics in the Domain of Radiant Heat. New York, 1873 -- Six Lectures on Light, delivered in America in 1872-73. London, 1873 -- Essays on the Floating-Matter of the Air in Relation to Putrefaction and Infection. New York, 1882. Together 5 volumes, various 8vo sizes, contemporary bindings, condition varies. (5)