CONTEXTS. 



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ARTICLE I. Directions for Meteorological Observatioxs and the 

 Registry of Periodical Phenomena. 1860. Pp. 70. 



ARTICLE II. Psychometrical Table for Determining the Force of 

 Aqueous Vapor, and the relative Humidity of the 

 Atmosphere from Indications op the Wet and the 

 Dry Bulb Thermometer, Fahrenheit. By James H. 

 Coffin, A.M. 1856. Pp.20. 



ARTICLE III. Tables, Meteorological and Physical, prepared for 

 the Smithsonian Institution. By Arnold Guyot, P. 

 D., LL. D. Second edition, revised and enlarged. 

 1859. Pp. 634. 



