1 



Dr. Trelease presented a paper by Mr. L. H. Pammel of Ames, 

 Iowa, on " The Minute Structure of the Seed-coats of Euphor- 

 bia." Referred to the Council for publication. 



January \(^th, 1891. 



President Nipher in the chair ; nine members present. 



Dr. Hinrichs presented Part II. of his Contributions to Atom- 

 Mechanics, entitled " The Mechanical Determination of the 

 Atomic Volume of the Normal Saturated Hydro-carbons." 



Dr. Hambach presented a paper by Mr. A. W. Vogdes, enti- 

 tled ^^ Notes on Palceozoic Ci'ustacea" No. i ; '^ On some New 

 Sedalia Trilobites'"' — which was referred to the Council. 



February 2d, 1891. 



President Nipher in the chair ; ten members present. 



A paper by Mr. Charles Robertson, of Carlinville, Ills., on 

 "Flowers and Insects — AsclepiadacecE to Scropkulariacece" 

 was read by title and referred to the Council for publication. 



Dr. Hinrichs presented Part III. of his '' Contributions to Atom- 

 Mechanics." 



February 16th, 1891. 



President Nipher in the chair ; eleven members present. 



Prof. Pritchett read a paper, entitled "An Empirical Formula 

 for Predicting the Population of the United vStates." Referred to 

 the Council. 



Dr. Gustavus Hinrichs presented Part IV. of his " Contribu- 

 tions to Atom-Mechanics." 



March 2d, 1891. 

 President Nipher in the chair ; seventeen members present. 

 Dr. Gustavus Hinrichs presented Part V. of his " Contributions 

 to Atom-Mechanics." 



