CONTENTS. 



PAGE 



Proceedings: March 3, 1890 127 



Report of the Council 127 



Lecture: The Grand Canon of the Colorndo. By Prof. R. W. 

 Raymond, Ph.D 128 



Proceedings: March 10, 1890 128 



Geographical Variations in the Horned Larks of North Ameri- 

 ca. By Jonathan DwiGHT, J R ^ 128 



On the Genus Oracanthus Agassiz. By J. S. Newberry 131 



Proceedings: March 17, 1890 133 



Lecture: Nebulte and the Nebular Hypothesis. By Prof. 

 Charles F. Young 133 



Proceedings: March 24, 1890 134 



The Study of Folk-Lore. By W. W. Newell 134 



Proceedings: March 31, 1890 137 



Report of the Council 137 



Lecture: Volts and Amperes, and What they Mean. By Prof. 



C F. Chandler, Ph.D ." 137 



Proceedings: April 7, 1890 138 



A Remarkable Group of Meteorites from Kiowa County, Kan- 

 sas (by title). By George F. Kunz 138 



The Relation of Certain Thermo-dynamical Phenomena of Li- 

 quid Solutions to the Economy of Nature. By M. I. Pupin. . 138 



Proceedings: April 14, 1890 , 139 



On Certain Crinoidea of the Lower Niagara Limestone at Lock- 

 port, N. Y., with descriptions and new species (title). By 



Dr. E. N. S. Ringueberg 139 



Lecture: Methods of Research in Bacteriology. By George M. 

 Sternberg, U. S. A 139 



Proceedings: April 21, 1890 140 



Joint Meeting of the Section of Minei'alogy and the New York 



Mineralogical Club 140 



A Group of Copper Pseudomorphs after Chalcocite, and Silica 



and Prehnite Pseudomorphs after Pectolite, from Paterson, 



N. J. By Joseph H. Hunt, M.D 140 



The Minerals Exhibited at the Paris Exposition of 1890. By 



George F. Kunz 145 



Proceedings: April 28, 1890 156 



Lecture: Glimpses of Arctic Scenery. By W,ilham Bradford, 156 



