CONTENTS. 



REPORT OF THE SECRETAEY. 



Pag*. 



Eesolation of Congress to print the Report 2 



Letter from the Secretary to Congress 3 



Letter from the Chancellor and Secretary 4 



Officers and Regents of the Institution 5 



Members ex officio and honorary members of the Institution 6 



Programme of Organization 7 



Itoportof the Secretary, Professor Henry. (For lb(32. ) 13 



Ri>port of the Assistant Secretary. ( For 1862. ) 46 



List of Donations to the Museum 57 



List of Smithsonian Publications during 18G2 6l> 



List of Meteorological Stations and Observers 62 



liist of Meteorological Material received during 1862 70 



Report of the Executive Committee 75 



Journal of the Board of Regents, from January 21, 1863, to February 3, 1803 78 



J'^ulogy on Hon. James A. Pearce, by Professor Bache 100 



GENERAL APPENDIX. 



LECTURES. On tjie Undulatory Theory of Light, by Dr. F. A. P. Bar- 

 nard 107 



Part I. Introductory — 



Outline of Optical Discovery 107 



Theories of Light 143 



Part II. Undulatory Theory — 



1. Vibration 147 



2. Undulation 151 



3. Reflection and Refraction 157 



4. Interference ^ 162 



5. Diffraction 172 



6. Colors of thin plates 183 



7. Polarization by Reflection and by Refraction 188 



8. Circular and Elliptical Polarization by Reflection 19f> 



9. Rotary Polarization 20(1 



10. Chromatics of Polarized Light 204 



11. Double Refraction 215 



12. Wave Surl'ace 224 



Index to Lectures on Light 232 



IJECTURES. On Physical Ethnology, by Dr. Danikl Wilson 240 



Part I. The American Cranial Type 240 



Part II. Changes in Cranial Forms 265 



Part III. Primitive Art-traces 291 



LECTURES. Introductory to the Study of IIigu Antiquity, by A. Moiilot.. . 303 



