106 Bulletin Wisconsin Natural History Society. [Vol. 10, Nos. 1 & 2. 
In conclusion, the evidence is given for what it is worth as to 
the actual observations without regard to what fate befalls the 
theories presented. At the lower end of the lake August 18, there 
were almost no midges and there were also no flocks of birds. 
This is proof enough that the birds were not merely there because 
there was low wet country, since it is this South end of the lake 
which is most marshy. This fact also points the argument that 
the Northward trend of birds was due to the majority of midges 
being Northward along the lake. 
State Entomologist’s Office, April 10, 1912, 
Madison, Wisconsin. 
