206 



the fall. It seems to have been more than usually abundant this sum- 

 mer in many localities in this country, and as a result its migrations 

 this autumn have been more frequently noticed than usual. In this 

 number we publish a note from Dr. !^eal, of Oklahoma, upon such an 

 occurrence in his locality, and we have noticed in the Cleveland Plain- 

 dealer of September 20 a most interesting account of the passage of 

 immense swarms over that city. The head lines of the article are so 

 characteristic of American journalism that they will bear repeating: 

 "MANY MILLIOiS'S. Sirarms of Butterflies Invaded Cleveland, and 

 Everybody Gazed at the Wonderful Sight — A Beautiful Vision of 

 Orange Yellow — Strange Flight of the Insects from North to South — 

 Mistaken for Cholera Germs — Immigrants Who Disregarded Mayor 

 Eose's Proclamation." At the University of Minnesota these migra- 

 tions have been noticed for several years by Prof. Lugger, of the Agri- 

 cultural Experiment Station, and this year Prof. C. F. Nachtrieb, of 



Fig. 22.— Arohippus butterflies resting at night during migration period— reduced (from a photograph 

 by Prof. C. F. Nachtrieb). 



the Department of Animal Biology, succeeded in taking a good photo- 

 graph of the butterflies resting at night from their long journey. The 

 photograph was taken by means of an electric light and is here repro- 

 duced by the courtesy of Prof. Nachtrieb. A similar figure drawn in 

 rough outlines was published by Dr. Poland Thaxter in the Canadian 

 Entomologist a number of years ago. 



