OUR COYER 



The unusual figures on the cover are not a new idea 

 in decorative art, hut rather a group of diagrams show- 

 ing the concentration of chicks at night under three dif- 

 ferent brooders: areas constantly occupied (black); 

 areas not constantly occupied (cross-hatched) ; aitd the 

 extent of crowding out beyond the curtains (outer black 

 line) that occurred at various times. It wotdd appear 

 that in Houses 15 and 18 the celluloid window had 

 some effect on the location of chicks, but this is not sub- 

 stantiated by House 16. Waterers (W ) and Feeders 

 (F) are also shown. 



