vi Contents 



XIV A Novel Theory of Extinction . . . I73 



By C. H. Ames and Robert Ridgmay 



XV News from John Burroughs .... 179 



XVI The Pigeon in Manitoba 186 



By George E. Atkinson 



XVII The Passenger Pigeon in Confinement . . 200 

 By Ruthven Deane, in "The Auk" 



XVI 11 Nesting Habits of the Passenger Pigeon . 209 



By Dr. Morris Cibbs, in " The O'dlogist " 



XIX Miscellaneous Notes 217 



