15 



printed for gratuitous distribution to all interested. Republication 

 of the prize essays in other journals, magazines and newspapers 

 is to be invited. 



The Society for Plant Morphology and Physiology held its 

 fifth annual meeting at Columbia University, on December 31, 

 1901, and January 1, 1902. The following papers and reports 

 were presented : Artificial changes affecting the Vegetation of the 

 Huron River, Professor V. M. Spalding, University of Michigan ; 

 A floating tropical botanical Laboratory (illustrated), Dr. John 

 W. Harshberger, University of Pennsylvania ; The Physiology of 

 Sea-water, Dr. Rodney H. True, Department of Agriculture ; 

 On the Teaching of Plant Physiology to large elementary Classes, 

 Professor W. F. Ganong, Smith College ; Discussion upon the 

 most profitable Relation of the American botanical Societies to 

 one another, opened by Dr. D. T, MacDougal, New York Botan- 

 ical Garden ; Report of the Committee on the Botanisches Cen- 

 tralblatt, Professor W. G. Farlow, Harvard University, Chairman ; 

 On the Teaching of Vegetable Pathology, Dr. Hermann von 

 'Schrenk, Shaw School of Botany ; A Disease of the American 

 Ash, Dr. Hermann von Schrenk ; The Destruction of Cell Walls 

 by Bacteria, Dr. Erwin F. Smith., Department of Agriculture ; 

 Observations on the Bacterial Rot of the Calla Lily, Dr. C. 0. 

 Tozvnsend, Department of Agriculture ; Germination of Basidio- 

 mycetous Spores, Dr. Margaret C. Ferguson, Wellesley College ; 

 Vegetative Reproduction in Leptolejeunea, Professor A. W. Evans, 

 Yale University ; Observations on Pterygophora, Professor Con- 

 zvay MacMillan, University of Minnesota ; Notes on new species 

 of Lichens collected by the Harriman Expedition, Professor Clara 

 E. Cummings, Wellesley College ; What is the Archesporium ? 

 Professor F. E. Lloyd, Columbia University; The Embryology 

 and Germination of the Genus Peperomia, Professor Duncan S. 

 Johnson, Johns Hopkins University ; Report of the Committee 

 on the Standard College Entrance Option in Botany, Professor 

 W. F. Ganong, Smith College, Chairman. For the afternoon of 

 January 1, the Society adjourned to the New' York Botanical 

 Garden where the museums, laboratories, and conservatories were 

 inspected. The sessions were brought to a close with a dinner, 



