SOME INDIRECT RESULTS 



503 



Fig. 88. Alteration of moorland by nesting of Gulls, White Moss, West Linton, 

 Spring, 1917. 



Site of gullery shown by pale band of withered grass in middle of moor ; subsidiary 

 gullery beyond. 



Fig. 89. Alteration of moorland by nesting of Gulls; near view of part of above 

 guljery showing merging of tussocks of grass into heather. 



