CHAPMAN, THE HABITAT GROUPS 



" correct view-point," neither the ends nor the top of the group can be 

 seen. By thus leaving the actual limits of the group to the imagination 

 the illusion of space and distance is greatly heightened. 



The groups are illuminated from above by diffused light; electric 

 light V)eing employed when daylight fails, but, in either case, the rays 

 strike the group from the same diffusing surface. 



Acknowledgments. 



The Museum owes this series of Bird Groups primarily to the 

 generosity of a number of its members, without whose contributions 

 the collection and preparation of the material would not have been 

 undertaken. 



For this valuable cooperation the Museum is indebted chiefly to 

 Mr. John L. Cadwalader and to Mrs. Morris K. Jesup, Mrs. Philip 

 Schuyler, Mrs. John B. Trevor, Mrs. Robert Winthrop, Mr. F. Augustus 

 Schermerhorn, Mr. H. B. HoUins, jMr. Henry Clay Pierce, Mr. Henry 

 W. Poor and Mr. Courtenav Brandreth. 



MAP INDICATING LOCALITIES REPRESENTED BY THE GROUPS, 



