CONTENTS 



List of Authors' Affiliations v 



Preface ix 



ARTICLE 



1. The Early History of the Botanical Society of America, 



by Oswald Tippo i 



2. Awards of Certificates of Merit at the Fiftieth Anniversary 

 Meeting, by Bernard S. Meyer 14 



3. Microbes — Man's Mighty Midgets, by Kenneth B. Raper jj 



4. The Fight with the Fungi, or the Rusts and Rots That 

 Rob Us, the Blasts and the Blights That Beset Us, by 

 James G. Horsfall ^o 



5. Problems in Preventing Plant-disease Epidemics, by 



E. C. Stakman 61 



6. An Anatomist's View of Virus Diseases, by Katherine Esau 78 



7. Research on Xylem and Phloem; Progress in Fifty Years, 



by Vernon I. Cheadle P5 



8. Botany and Morphogenesis, by Edmund W. Sinnott 118 



9. Cytology: The Study of the Cell, by Ralph E. Cleland 130 



10. Induced Polyploidy, by O. J. Eigsti i^j 



11. Cytogenetics and Evolution of the Grass Family, by 



G. Ledyard Stebbins 166 



12. Taxonomy of the Higher Plants, by Reed C. Rollins igz 



13. Highlights of Botanical Exploration in the New World, 



by Bassett Maguire 209 



14. Natural History, Statistics, and Applied Mathematics, by 

 Edgar Anderson 24"/ 



15. Application of Some Phytosociological Techniques to 

 Brazilian Rain Forest, by Stanley A. Cain, Gustavus M. 

 de Oliveira Castro, J. Murqa Pires, and Nilo Tomas da 



Silva 261 



