we Would expect the crest of the wave to be sucessively lower 
 
until adjustment was made or the species disapeared. I may be 
 
quite wrong in my fears but I have heard nothing to set them 
 
at ease as yet. 
                                 Sincerely,- 
 
 
 
P.S.? I am fairly well convinced that the final factor in 
 
the disapearance of the Passenger Pigeon was also introduced 
 
disease. The final catastrophy came too suddenly and was too 
 
complete have been the result of the fowler. He may have reduced 
 
the millions to thousands but it would have taken generations for 
 
him to have got the last few hundreds.