OF THE SMITHSONIAN INSTITUTION. 13 



81. Ou the receut Secular Period of the Aurora Borealis. By Denison 



Olmsted. May, 1856. 4to., pp. 52. (S. C. viii.) 



82. Investigations, Cheraieal and Physiological, relative to certain Ameri- 



can Vertebral a. By Joseph Jones. July, 1856. 4to., pp. 150, 27 

 woodcuts. (S. C. VIII.) 



83. On the Relative Iutent;ity of the Heat and Light of the Sun upon 



Different Latitudes of the Earth. By L. W. Meech. November, 

 1856. 4to., pp. 58, 5 woodcuts, 6 plates of 9 figures. (S. C. ix.) 



84. Record of Auroral Phenomena observed in the higher Northern Lati- 



tudes. By Peter Force. July, 1856. 4to., pp. 122. (S. C. viii.) 



85. Publications of Learned Societies and Periodicals in the Library of the 



Smithsonian Institution. Part II. May, 1856. 4to., pp. 38. (S. 

 C. VIII.) 



86. Observations on Mexican History and Archfeology, with a special 



notice of Zapotec Remains, as delineated in Mr. J. G. Sawkins's draw- 

 ings of Mitla, etc. By Brantz Mayer. November, 1856. 4to., 

 pp. 36, 17 woodcuts, 4 plates of 6 figures. (S. C. ix.) 



87. Psychrometrical Table for Determiuing the Elastic Force of Aqueous 



Vapor, and the Relative Humidity of the Atmosphere from indications 

 of the Wet and the Dry Bulb Thermometer, Fahrenheit. By James 

 H. Coffin. 1856. 8vo., pp. 20. (M. C. i.) 



88. Researches on the Ammouia-cobalt Bases. By Wolcott Gibbs and 



Frederick Aug. Genth. December, 1856. 4to., pp. 72, 21 wood- 

 cuts. CS. C. IX.) 



89. North American Oology. By Thomas M. Brewer. Part I. Rap- 



tores and Fissirostres. 1857. 'J to., pp. 140, 5 plates of 193 figures. 

 (S. C. XI.) 



90. Illustrations of Surface Geology. By Edward Hitchcock. April, 



1857. 4to., pp. 164, 2 woodcuts, 12 plates of 89 figures. (S. C. ix.) 



91. Annual Report of the Board of Regents of the Smithsonian Institution, 



for the year 1856. 34th Congress, 3d session. Senate, No. 54, House 

 of Representatives, Mis. Doc. No. 55. 1857. 8vo., pp. 468, 69 

 woodcuts* 



CONTENTS. 



Keport of Prof. J. Hknky, and Proceedings of the Board. 



Baird, S. F. Report on publications, exchanges, museum, and explora- 

 tions. 



List of meteorological stations and observers. 



Kohl, J. G. On a collection of the charts and maps of America. 



Kett), D. B. Architecture in relation to ventilation, warming, lighting, 

 fire-proofing, acoustics, and the general preservation of health. 



