On the Undulatory Theory of Light. pp. 107-239 of Report of Board of Regents of the Smithsonian Institution 1862. Washington GPO, 1963. . Very good. This very interesting lecture about the theory that light is due to vibrations or undulations in the ether as the medium through which it is transmitted from its source in a luminous body is splitted in 2 parts (Part I. Introductory, Outline of Optical Discovery, Theories of Light: Part II. Undulatory Theory: 1. Vibration, 2. Undulation, 3. Reflection and Refraction, 4. Interference, 5. Diffraction, 6. Colors of thin plates, 7. Polarization by Reflection and by Refraction., 8. Circular and Elliptical Polarization by Reflection, 9. Rotary Polarization, 10. Chromatics of Polarized Light, Double Refraction, 12. Wave Surface. The volume Also includes Wilson's lecture on Physical Ethnology, Morlot on the Study of High Antiquity, Lubbock on North Am Archaeology; HB, lg octavo; 446 pages; Also includes an historical sketch of the Academy of Sciences of Paris, Memo

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