30 The Period erom 1881 to 1890 



Physics* T. G. Mendenhall (advancement of physics). 



Chemistry. H. Carrington Bolton : "Chemical Literature." 

 Mechanical Science. W. P. Trowbridge (engineering). 

 Biology. William H. Dall (mollusks). 

 Histology and Microscopy. A. H. Tuttle ( microscopes ) . 

 Anthropology. Daniel Wilson: "Some Physical Characteristics of Na- 

 tive Tribes of Canada." 



The Minneapolis Meeting, August, 1883. ( I'ol. 32) 



Mathematics and Astronomy. W. A. Rogers : "The German Survey of 

 the Northern Heavens." 



Physics. Henry A. Rowland : "A Plea for Pure Science." 

 Geology and Geography- C. H. Hitchcock : "The Earl)- History of the 

 North American Continent." 



Biology. W. J. Beal : "Agriculture: Its Needs and Opportunities." 

 Anthropology. Otis T. Mason : 'The Scope and Value of Anthropologi- 

 cal Studies." 



Economic Science and Statistics. Franklin P. Hough: "The Methods of 

 Statistics." 



The Philadelphia Meeting, September, 1884. ( J'ul. 33) 



Mathematics and Astronomy. Henry T. Eddy: "College Mathematics." 

 Physics. John Trowbridge: "What Ts Electricity?" 

 Chemistry. John W. Langley: "The Conception of Chemical Affinity." 

 Mechanical Science. Robert H. Thurston: 'The Mission of Science." 

 Geology and Geography. N. PI. Winchell: "The Crystalline Rocks of 



the Northwest." 



Biology. Edward D. Cope: "On Catagenesis." 



Histology and Microscopy. T. G. Wormley: "The Applications of the 



Microscope." 



Anthropology. Edward S. Morse: "Man in the Tertiaries." 



Economic Science and Statistics. John Eaton : "Scientific Method and 



Scientific Knowledge in Common Affairs." 



The Ann . trbor Meeting, . lugust, 1885. < / '0/. 34) 



Chemistry. William Ripley Nichols: "Chemistry in the Service of Pub- 

 lic Health." 



Mechanical Science and Engineering. J. Burkitt Webb: "The Second 

 Law of Thermodynamics." 



Geology and Geography. Edward Orton (geological problems). 



Biology. Burt G. Wilder: "Educational Museums of Vertebrates." 



Histology and Microscopy. Simon Henry Gage: "The Limitations and 



