3 2 The Period from 1881 to 1890 



Geology and Geography. George H. Cook : "On the International Geo- 

 logical Congress, and Our Part in It as American Geologists." 



Biology. Charles V. Riley: "On the Causes of Variation in Organic 

 Forms." 



Anthropology. Charles C. Abbott: "Evidences of the Antiquity of Man 

 in Eastern North America." 



Economic Science and Statistics. Charles W. Smiley: "Altruism Con- 

 sidered Economically." 



The Toronto Meeting, August, i88p. (Vol. 38) 



Mathematics and Astronomy. Robert Simpson Woodward : "The Math- 

 ematical Theories of the Earth." 



Physics. Henry S. Carhart : "Review of Theories of Electrical Action." 



Chemistry. William L. Dudley : "The Nature of Amalgams." 



Geology and Geography. Charles A. White: "The North American 

 Mesozoic." 



Biology. George L. Goodale: "Some Recent Investigations Relative to 

 Cell-Contents." 



Anthropology. Garrick Mallery: "Israelite and Indian. A Parallel in 

 Planes of Culture." 



Economic Science and Statistics. Charles S. Hill : "Economic and So- 

 ciologic Relations of the Canadian States and the United States, Prospec- 

 tively Considered." 



The Indianapolis Meeting, August, 1890. ( Vol. 39) 



Mathematics and Astronomy. Seth Carlo Chandler: "The Variable 

 Stars." 



Physics. Cleveland Abbe: "A Plea for Terrestrial Physics." 



Chemistry. Robert B. Warder : "Recent Theories of Geometrical Isomer- 



ism." 



Mechanical Science and Engineering. James E. Denton: "History of 

 Attempts to Determine the Relative Value of Lubricants by Mechanical 

 Tests." 



Geology and Geography. John C. Branner : "The Relations of the State 

 and National Geological Surveys to Each Other and to the Geologists of 

 the Country." 



Biology. Charles Sedgwick Minot : "On Certain Phenomena of Grow- 

 ing Old." 



Anthropology. Frank Baker: "The Ascent of Man." 



Economic Science and Statistics. J. Richard Dodge: "The Standard of 

 Living in the United States." 



