20 



C. A. Weatherby of the Gray Herbarium, Cambridge, Massachusetts, has 

 promptly answered my many letters relative to botanical nomenclature. I 

 wish to express my appreciation for this special service and reading proof. 



Paul Weatherwax of Indiana University has read the manuscript and 

 given me helpful suggestions. 



Frederick J. Hermann of the University of Michigan has read both the 

 manuscript and the proof and has been exceedingly helpful in many ways. 



Mrs. Leland Winch, of West Lafayette, Indiana, nee Harriet M. Gragg, 

 has typed the manuscript. She has been most helpful in the English com- 

 position and has been an accurate, earnest, and conscientious assistant. 



I wish to express my sincere thanks to E. P. Wilson for his interest and 

 efforts in having the Flora published in the best manner possible ; also for 

 the making of the county and botanical area maps. 



Our thanks are also due to J. H. Armington of the U.S. Weather Bureau 

 for the two full page maps, showing the rainfall and temperature of 



Indiana. 



I wish to acknowledge the great assistance of my wife, Stella M. Deam, 

 who has, during the past forty years, helped to collect and prepare speci- 

 mens, has read copy and proof, and has shared the financial burden the 

 work has entailed. 



Lastly, I wish to thank the Department of Conservation for the oppor- 

 tunity of doing this work and publishing the results. 



Conclusion 



Active work of writing the flora was begun about seven years ago. Much 

 data on the distribution of rare species yet remain to be collected but since 

 I have just passed my seventy-third birthday it seems wise to conclude 



the work. 



Chas. C. Deam. 



Bluff ton, Indiana, Sept. 28, 1938. 



P.S. In order to keep the nomenclature up to date while the flora was 

 going through the press it was necessary to make the changes in footnotes 

 and omit some of the synonyms. 

 Feb. 15, 1940. Chas. C. Deam. 



