ACKNOWLEDGMENTS. 



The author is indebted to Dr. William Morton Wheeler 

 of Harvard University for identification of ants, and to 

 various authors for information on the subject of this book, 

 among them chiefly: 



W. H. Wheeler, author of "Ants," and Dean of Economic 

 Entomology, Harvard University. 



Henry McCook, author of several books on the subject. 



C. W. Woodworth, Entomologist, State University of 

 California. The illustrations of the Black Harvester Ant 

 are largely modifications of a drawing by Dr. Woodworth. 



