8 books
Harper's Scientific Memoirs
Observations Upon the Prophecies of Daniel
Newton's Principia, Sections I, II, III, with Notes and Illustrations. Also a Collection of Problems
Prismatic and Diffraction Spectra
Prismatic and Diffraction Spectra: Memoirs by Joseph Von Fraunhofer (Large Text Classic Reprint)
The Free Expansion of Gases
The laws of radiation
The Fuzzows