INTRODUCTION 1 7 



her opportunities. To all this must be added an endless list of unostentatious 

 charities, of good deeds to others who were in want, to many of whom her 

 words of kindly cheer were boons no less valued than the comforts which her 

 hands provided. Thus, in the final reckoning, she had accomplished her life's 

 ambition, — " to do her part." 



Finally, to the memory of the great Naturalist and Teacher, Louis Agassiz, 

 to whose encouragement and inspiration I owe the continuance of my scientific 

 studies parallel with a business career, I offer the homage of one who has found 

 in them, as he foretold, a resource in later years beyond all price. 



Along with those already mentioned, I am indebted to many other persons 

 and institutions for courtesies and assistance in various ways, which I regret 

 that the limits of an introduction prevent me from specifying in detail. I wish 

 to express my deep gratitude for all the favors thus enjoyed; the pleasure of 

 their acknowledgment is marred by the fact that in the long interval that has 

 ensued some of these friends have paid the debt of Time. The following list is 

 intended to include them all : 



Mr. Alexander Agassiz, Cambridge, Mass. ; American Museum of Natural 

 History, New York ; Dr. G. W. Austin, Wilmington, Ohio ; Rev. W. H. Barris, 

 Davenport, Iowa; Dr. Paul Bartsch, U. S. National Museum; Dr. R. S. 

 Bassler, U. S. National Museum; Dr. F. A. Bather, British Museum; Mr. 

 Charles S. Beachler, Crawfordsville, Indiana; Mr. J. O. Beebe, Burlington, Iowa; 

 Mr. Walter R. Billings, Ottawa, Canada; Professor W. W. Borden, Borden, 

 Indiana; Professor M. Boule, Museum d'Histoire Naturelle, Paris; Mr. Fred- 

 erick Braun, Brooklyn, N. Y. ; Professor Samuel Calvin, Iowa City, Iowa; 

 Geological Survey of Canada, Ottawa ; Dr. E. C. Case, Ann Arbor, Michigan ; 

 Mr. Kenneth M. Chapman, Santa Fe, New Mexico; Walker Museum, Uni- 

 versity of Chicago; Mr. Austin Hobart Clark, U. S. National Museum; Dr. 

 John M. Clarke, Albany, N. Y. ; Dr. William B. Clark, Baltimore, Md. ; Dr. 

 C. H. Crantz, Illinois State Museum ; Dr. A. R. Crook, Illinois State Museum ; 

 Mr. Robert Damon, Weymouth, England; Academy of Sciences, Davenport, 

 Iowa; Professor S. Dollo, Musee d'Histoire Naturelle, Brussels, Belgium; 

 Science and Art Museum, Dublin, Ireland; Dr. Charles R. Eastman, 

 Pittsburg, Pa.; Dr. August F. Foerste, Dayton, Ohio; Professor F. M. Fultz, 

 Burlington, Iowa; Dr. George H. Girty, U. S. Geological Survey; Professor 

 L. C. Glenn, Nashville, Tennessee; Dr. A. W. Grabau, Columbia University, 

 N. Y. ; Mr. George K. Greene, New Albany, Indiana; Mr. D. K. Greger, 

 Fulton, Missouri ; Dr. J. Walter Gregory, Glasgow, Scotland ; Dr. G. Hambach, 

 St. Louis, ' Missouri; Mr. Samuel Henshaw, Cambridge, Mass.; Rev. H. 

 Hertzer, Marietta, Ohio; Mr. Charles Holcroft, Dudley, England; Dr. G. 

 Holm, Riks Museum, Stockholm; Dr. E. O. Hovey, American Museum of 

 National History, N. Y.; Dr. G. H. Hudson, Plattsburg, N. Y.; Illinois 



