239 



List of Botanical Papers Presented before the Section of Biology, 



Indianapolis Meeting A. A, A, S., August, 1890. 



Forest Trees of Indiana, by Stanley Coulter. 



Preliminary notes on a new and destructive Oat Disease, by 

 B. T. Galloway. 



Observations on the variability of disease-germs, by Theo- 

 bald Smith. 



The Trimorphism of Uromyccs Trifolii^ by J. K, Howell, 

 presented by W. R. Dudley. 



Observations on the life history of Unciimla spiralis, by B^ 



T. Galloway. 



On the seed coats of the genus Euphorbia, by L. H. 



r'ammel. 



i 



Observations on the method of growth of the Prothallia 

 of the Filicinese, with reference to their relationships, by Doug- 

 las H. Campbell. 



Development of the Sporocarp of Griffithsia Bornetiana, by 



V. M, Spalding. 



Contributions to the hfe history of Isoetes, by Douglas H. 



Campbell. 



The relation of the Mexican flora to that of the United States, 



by Sercno Watson. 



The distribution of the North American Umhclliferce, by John 



M, Coulter. 



The distribution of Hepaticoe of North America, by Lucien 



M. Underwood. 



The Migration of Weeds, by Byron D. Halstcd. 



Geographical distribution of North American Grasses, by W. 



J. Beal. 



Geographical distribution of North American Cornaceae, by 



John M. Coulter. 



The general distribution of North American plants, by N. L. 



Britton. 



Work of the Botanical Division of the Department of Agri- 

 culture, by F. V. Coville. 



The continuity of protoplasm through the cell-walls of plants, 



by W. J. Beal and T. W. Tuomey. 



